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Updated: 22 hours 35 min ago

Portable TW Antenna

Fri, 05/24/2019 - 13:30

“Preserving and building upon the legacy of this premier portable HF antenna line, DX Engineering is now the manufacturer of TW Antennas!*

DX Engineering’s acquisition of the products and designs of these unique HF portable and stealthy antennas brings easy access and simplified ordering to this antenna line formerly known as Transworld.

DX Engineering TW Antenna 40 Meter Solo Explorer Packages include everything you need to go portable! The package is comprised of the basic antenna structure, the band box and an antenna stand. You supply the coax and your own powered transceiver. It’s a great antenna for portable Low-Band QRP!

Naturally stealthy, these compact HF vertical-dipole TW antennas feature a black powder-coat finish that is excellent for antenna use in HOAs. Use them where “CC & R” antenna restrictions preclude the installation of towers or easily-visible HF antennas. Simply unfold the DXE-TW-BAS-BLK Top and Bottom Sections, add your Band Box Center Post section, and place the antenna on the antenna stand and operate! No radials are needed with these 40-meter vertical dipoles!

Ideal for portable use, the lightweight Quadrastand, DXE-TW-AQ, lets you set up your DX Engineering HF Portable TW Antenna wherever you happen to be. Think about special operating events like Scouts Jamboree On-The-Air (JOTA), Field Day or even SOTA (Summits On-The-Air). For general camping and travel, a convenient and durable carrying case, DXE-TW-DXBAG, is OPTIONALLY available to make transporting these antennas in your car or RV a snap!

Typical installation for TW Antennas is a compact 8.25 ft. tall and only 5 ft. wide. Make your choice; portable, fixed or both, then equip yourself with the best compact vertical-dipole antenna available. 

Note: Although a permanently-installed mount is available, DX Engineering TW Antenna band boxes are not waterproof. Do not leave your TW Antenna exposed to the elements.

Note: Whenever the DX Engineering “Documentation” tab is available, please look at the associated files for additional product information.

DX Engineering TW Antenna 40 Meter Solo Explorer Packages are here to help you enjoy working stealthy HF at home or… anywhere!”


 

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The post Portable TW Antenna appeared first on QRZ NOW - Amateur Radio News.

ISS Slow Scan TV June 5-6

Fri, 05/24/2019 - 12:04

A Russian MAI-SSTV event is planned from the International Space Station for Wednesday, June 5 from 12:00-16:00 GMT and June 6 from 11:30-15:30 GMT.

ARISS say they expect transmissions to be at 145.800 MHz FM in SSTV mode PD120. Based on the times received, they do not expect SSTV signals over North America.

Check here for updates https://twitter.com/ARISS_status

This event uses a computer in the ISS Russian Segment, which stores images that are then transmitted to Earth using the ARISS amateur radio station located in the Service Module which employs the Kenwood TM D710E transceiver.

Once the event begins the transmissions should be transmitted on 145.800 MHz FM using the PD-120 SSTV mode.

Amateur radio operators and other radio enthusiasts are invited to post the images they receive at http://www.spaceflightsoftware.com/ARISS_SSTV/index.php

Please note that the event is dependent on other activities, schedules and crew responsibilities on the ISS and is subject to change at any time.

You can use online radios to receive signals from the International Space Station:
• SUWS WebSDR located Farnham near London http://farnham-sdr.com/
• R4UAB WebSDR located European Russia http://websdr.r4uab.ru/

ISS SSTV information and links https://amsat-uk.org/beginners/iss-sstv/

Source:AMSAT UK

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The K7RA Solar Update 05/24/2019 – WPX CW 2019

Fri, 05/24/2019 - 09:49

May 18 was the last day we saw sunspot activity, after more than two weeks with daily sunspots visible. Average daily sunspot number declined to 5.3 this week following 22.7 during the previous week. Average daily solar flux declined from 75.7 to 69.8.

Geomagnetic conditions were quieter, with average daily planetary A index declining from 13 to 5.

Predicted solar flux over the next 45 days is 67 on May 24-31, 74 on June 1, 76 on June 2-10, 74 on June 11, 72 on June 12-13, 70 on June 14-15, 69 on June 16-17, 68 on June 18, 67 on June 19-25, 70, 72 and 74 on June 26-28, then 76 on June 29 through July 7.

Predicted planetary A index is 5 on May 24, 8 on May 25, 5 on May 26-27, then 10, 12, 8 and 8 on May 28-31, 5 on June 1-15, 8 on June 16-18, 5 on June 19-23, then 10, 12, 8 and 10 on June 24-27, and 5 on June 28 through July 7.

Geomagnetic activity forecast for the period May 24-June 19, 2019 from F.K. Janda, OK1HH.

Geomagnetic field will be:
Quiet on May 27, June 2, 4-5, 14-15, 18
Quiet to unsettled on May 25-26, June 1, 6, 9-10, 17, 19
Quiet to active on May 24, 30-31, June 3, 7-8, 12-13, 16
Unsettled to active on May 28-29
Active to disturbed on June (11)

Solar wind will intensify on May 29-31, June 1, (10-12)

Parenthesis means lower probability of activity enhancement.

On May 20, Markus Hansen, VE7CA, wrote: “Today I have been hearing many California beacons on 10 meters as well as K7EMX/B in Utah. So, I have been calling CQ on 28005.00 for several hours and not one single answer to my calls.

“I have also been listening to AE6RQ’s SDR and my signal has been between 579 and 20 over S 9 from 1700 to 2100Z.  I don’t have a 6-meter antenna up right now, but I wish I did.

“I appreciate your propagation reports. I copy them regularly on CW via W1AW.”

Max White, M0VNG, sent this piece on Earth’s moving magnetic North Pole: https://bit.ly/2HC1j4e


Scott Avery, WA6LIE, in Salinas, California reported a nice sporadic E opening on 6 meters during Mother’s Day, May 12. “We had a good opening from 1430-2030 UTC here in Salinas CM96. Had a lot of FT8 activity logging 45 contacts there and 6 QSOs on SSB.

“Conditions were wild for a bit on SSB with multiple QSO’s on the same frequency i.e.: 50.130, 50.135 etc. That lasted for about 2 hours after about 1600z.

“I worked all I heard and worked many grid squares! The magic band… got to love it!”

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K9LA recently updated a 2007 article he wrote for WorldRadio on ionospheric sounders, which were referenced in recent bulletin ARLP019. See https://k9la.us/Measuring_the_Ionosphere.pdf. The link to data from ionospheric sounders provided in ARLP019 is here: https://metrics.af7ti.com/Note that you can re-order the table by clicking on any of the headings. For instance, at 0740 UTC on May 17 if I click on the foF2 column, I can sort the ionosondes by foF2 values and discover that the ionosonde on Cocos Island has the highest foF2 value, at 10.465 MHz. Number 2 is Guam at 8.588 MHz, followed by Rome, Italy. Later at 0850 UTC those values were 11.56 MHz, 8.6 MHz and 6.95 MHz. In only an hour, propagation changes!

The latest video from  Dr. Skov: https://youtu.be/hKDyUd1RC5Q

This weekend is the CQWW WPX contest, details here: https://www.cqwpx.com/

If you would like to make a comment or have a tip for our readers, email the author at k7ra@arrl.net.

For more information concerning radio propagation, see the ARRL Technical Information Service at http://arrl.org/propagation-of-rf-signals. For an explanation of numbers used in this bulletin, see http://arrl.org/the-sun-the-earth-the-ionosphere.

An archive of past propagation bulletins is at http://arrl.org/w1aw-bulletins-archive-propagation. More good information and tutorials on propagation are at http://k9la.us/.

Monthly propagation charts between four USA regions and twelve overseas locations are at http://arrl.org/propagation. Instructions for starting or ending email distribution of ARRL bulletins are at http://arrl.org/bulletins.

Sunspot numbers for May 16 through 22, 2019 were 13, 13, 11, 0, 0, 0, and 0, with a mean of 5.3. 10.7 cm flux was 73.6, 72.1, 70.6, 68, 68.7, 68, and 67.3, with a mean of 69.8. Estimated planetary A indices were 8, 5, 5, 3, 6, 4, and 4, with a mean of 5. Middle latitude A index was 9, 7, 8, 3, 7, 4, and 5, with a mean of 6.1.

Source:ARRL

(adsbygoogle = window.adsbygoogle || []).push({}); Recent Posts Portable TW Antenna May 24, 2019 in: Antenna No comments

“Preserving and building upon the legacy of this premier portable HF antenna line, DX Engineering is now the manufacturer of TW Antennas!* DX Engineering’s acquisition of the products and designs of these unique HF portable and... Read more

Show More

 

The post The K7RA Solar Update 05/24/2019 – WPX CW 2019 appeared first on QRZ NOW - Amateur Radio News.

Four-square eight directions antenna system, with dummy load power indicator and high power

Fri, 05/24/2019 - 07:43
4SQ-8DIR antenna system

The four-square phased-vertical array if used by many contesters and DXers for oreration on the low bands. This construction modify a conventional four-square to provide eight directions of fire instead of the normal four. This another four directions are located at points which are mid-way between the existing four. Total of eight selectable beam-headings spaces 45deg apart. When beaming through a corner (as in conventional four-square) the current in the two middle elements lags that of the rear element by 90deg, while the current in the front element lags that of the rear element by 180deg. When firing through the sides of the square, there are two front elements and two rear elements. Now the currents in the front elemets lag those of the rear elements by 90deg.

This is 4 Square 8 Direction antenna system. Based on K3LC design

Photos by Carsten Dauer‎

Main functions:
  • Eight directions phased vertical array
  • Dummy load power indicator info
  • High SWR protections
  • Segment switch by the external relay info
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  • Power version MP and HP
  • MP up to 3,5kW
  • HP up to 6kW
  • Very good dummy load isolation. More than 25dB
  • Controlled by 8 wires. Simply RJ-45 UTP CAT-6 cable is fine.
  • High quality ATC capacitors
  • BIG cores T225-2B and T300-2D + QRO64-2D-61 with 2,5mm Cu wire
  • Quality PTFE SO-239 connector. N or 7/16 DIN connector on request
  • Coating spray final protection.
  • Stainless screws and nuts.
  • HEAVY duty Aluminium IP56 box.
  • Size 20×15 cm (feeder).
  • Available as
    • Assembled product with CONTROLLER – tested
    • PCB

Controller:
  • LED direction indicator. Picture – 2
  • LED bar SWR indicator – power in the dummy load. Picture – 3
  • High SWR protections – break PTT loop to PA + buzzer sound. Info
  • PTT loop – Hot switch and high SWR protection.
  • Segment switch by the external relay info
Parameters:
  • 8 Directons based on K3LC design
  • Dump power insulation – better than -20dB (usually -30dB to -40dB)
  • Input SWR – better than 1:1.3 (usually 1:1).
  • LED bar indicarot lower indicated power around 5W.
  • Power supply 13,8V to 15V. With option internal power supply also 230V 50Hz.
  • Power supply current less than 600mA

4SQ-8DIR system includes:
  • RF box into the feed point Picture
  • Controller.
  • Total parcel weight about 6 kg.
  • Dummy load is not included!!!.

OPTIONs:

  • Internal Power Suppy 230V only
  • Dummy load 50 Ohm
  • Coax cable feeding lines 75 Ohm

https://remoteqth.com

(adsbygoogle = window.adsbygoogle || []).push({}); Recent Posts Portable TW Antenna May 24, 2019 in: Antenna No comments

“Preserving and building upon the legacy of this premier portable HF antenna line, DX Engineering is now the manufacturer of TW Antennas!* DX Engineering’s acquisition of the products and designs of these unique HF portable and... Read more

Show More

The post Four-square eight directions antenna system, with dummy load power indicator and high power appeared first on QRZ NOW - Amateur Radio News.

The Rigid Dual boom Quad from InnovAntennas – LFA-Q – 4el for 28MHz

Fri, 05/24/2019 - 05:22

This example is installed at KJ4AJG and is a 4el for 28MHz. Tom is so impressed, he has ordered another to stack!

If you don’t see one for a band you want to use, don’t worry we can do it. We have made them commercially for as low as 15MHz, want to give one a try?

www.innovantennas.com

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The post The Rigid Dual boom Quad from InnovAntennas – LFA-Q – 4el for 28MHz appeared first on QRZ NOW - Amateur Radio News.

Radio interference from Solar Panels – RFI

Fri, 05/24/2019 - 04:52

The radio amateurs have known for a long time that PV installations (solar panels) could interfere. For more than 10 years, the VERON has been warning about the effects of equipment that emits unwanted RF emissions. That started with the Power Line Communication devices. This makes it easy to make an ethernet connection via the mains without having to install a UTP cable. Very popular with internet suppliers to connect a second television set at low costs. But it doesn’t stop there.There will also be PV installations (solar panels) whose converters and optimizers cause interference on our HF tires and even above that. All equipment is now equipped with switching power supplies up to our LED lighting. That has not gone unnoticed by the VERC’s EMC-EMF committee.

Agentschap Telecom comes with tips

Agentschap Telecom wants more insight into the causes and the prevention of interference by solar panels. That is why Agentschap Telecom has contacted various market parties. To come to solid solutions together. A number of tips can be found on the Telecom Agency website to prevent interference. Including the use of CE marketing approved PV installations, laying cables side by side, using ferrite etc. Read the full article on the website of Agentschap Telecom .

Interference due to solar panels in Amersfoort

Jaap PA3GYM had an unpleasant surprise in Amersfoort. Immediate neighbors placed solar panels on their roofs. The consequence; at Jaap, the signal strength meters of its receivers turned out to be full. He suffered a lot from interference . He asked the VERON EMC-EMF Commission for help . And a process from failure to solution was started. The VERON EMC-EMF Committee discussed these results with the AT during the frequent Amateur Consultation . The AT saw a good opportunity here to regard Jaap’s situation as a ” testing ground “. We save you all the details (which can be read via this link ). It’s about the result.And that was there (and can be admired via this link ). The interference was considerably reduced.

US Coast Guard warns about the use of LED lamps

On August 26, 2018, the VERON reports on the warning issued by the US Coast Guard about the use of LED lighting in shipping.The US Coast Guard says it has received reports from crew, ship owners, inspectors and other shipping related people. The messages concern poor reception on VHF radio, Digital Selective Calling (DSC) and Automatic Identification Systems (AIS).Problems with reception arise when this equipment is in the vicinity of LED lamps.

https://tinyurl.com/Netherlands-AT-Solar-Panels

*google translate

Souce: http://www.southgatearc.org

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https://www.veron.nl/nieuws/storing-door-zonnepanelen/

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Rediscover HF Again! Building on the field-proven Airspy HF+ architecture, we designed the Most Refined HF/VHF SDR with world class performance in the... Read more

 

The post Radio interference from Solar Panels – RFI appeared first on QRZ NOW - Amateur Radio News.

Super Gain HT Antenna By Diamond, SRH770S Dual Band

Fri, 05/24/2019 - 04:23

“If you are in the market for a high gain HT antenna for those fringe areas, this may be for you. The Diamond SRH770s is very flexible for portable operations, and will get you into those fringe repeaters so you can finally get on DSTAR DMR and System Fusion”

Length:70cm / Weight:45g, Gain: 2.15dBi (144MHz), 4.5dBi (430MHz), Impedance:50ohms / Max.power rating:10W FM, Connector:SMA-P / Type:3/8wave (144MHz), 3/4wave (430MHz).

http://www.diamond-ant.co.jp/english/index.html

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Propagation The K7RA Solar Update 05/24/2019 – WPX CW 2019 May 24, 2019 No comments

May 18 was the last day we saw sunspot activity, after more than two weeks with daily sunspots visible. Average daily sunspot number declined to 5.3 t... Read more

Our Sun Dims After Storming: Solar Storm Forecast 05-23-2019 May 23, 2019 No comments

Read more

VHF Super Gain HT Antenna By Diamond, SRH770S Dual Band May 24, 2019 No comments

“If you are in the market for a high gain HT antenna for those fringe areas, this may be for you. The Diamond SRH770s is very flexible for porta... Read more

The new dual band DMR smartphone announced by RFinder is the E81 May 18, 2019 No comments

Read more

Software New JTDX v2.0.1-rc136 available! May 23, 2019 No comments

  JT65 – JT9 – T10 – FT8 – WSPR JTDX 2.0.1-rc136 22nd May for evaluation and on air testing, this rc (release candidate)... Read more

Updated TQSL configuration file released (config.xml v11.8) May 22, 2019 No comments

May 22, 2019: Updated TQSL configuration file released (config.xml v11.8) — Config.xml version 11.8 has been released. This is a update release... Read more

News ISS Slow Scan TV June 5-6 May 24, 2019 No comments

A Russian MAI-SSTV event is planned from the International Space Station for Wednesday, June 5 from 12:00-16:00 GMT and June 6 from 11:30-15:30 GMT. A... Read more

“Identify and Track Down RFI” by KQ6RS – Wins the May QST Cover Plaque Award May 23, 2019 No comments

Source: ARRL Read more

(adsbygoogle = window.adsbygoogle || []).push({}); Equipment Ampleon announces the industry’s most rugged 2KW RF power LDMOS transistor for ISM applications May 22, 2019 No comments

Ampleon has released the first of a family of RF power devices based upon its Advanced Rugged Technology (ART) derivative of the proven 9th generation... Read more

XIEGU G1M HF TRANSCEIVER | QUAD BAND | PORTABLE SDR | QRP | 5W SSB CW AW May 22, 2019 No comments

XIEGU G1M [Entry Level QRP Transceiver] – With receiving 0.5-30 MHz generally and transmitting capabilities on four popular amateur radio bands,... Read more

Digital Modes LoTW Now Accepting FT4 Contact May 23, 2019 No comments

The latest TQSL update (Config.xml version 11.8), released on May 22, includes FT4 as a submode of MFSK. It also adds AISAT-1 and PO-101 in the satell... Read more

ADIF 3.1.0 was approved today May 22, 2019 No comments

Dave Bernstein reported this on the DXLabs support group today: ————————————... Read more

 

The post Super Gain HT Antenna By Diamond, SRH770S Dual Band appeared first on QRZ NOW - Amateur Radio News.

Improved EU1KY Antenna Analyzer CEC V0.3

Thu, 05/23/2019 - 20:13

In this video, not include have a voice, but I placed subtitles on important parts. Please turn on subtitles.



Propagation The K7RA Solar Update 05/24/2019 – WPX CW 2019 May 24, 2019 No comments

May 18 was the last day we saw sunspot activity, after more than two weeks with daily sunspots visible. Average daily sunspot number declined to 5.3 t... Read more

Our Sun Dims After Storming: Solar Storm Forecast 05-23-2019 May 23, 2019 No comments

Read more

VHF Super Gain HT Antenna By Diamond, SRH770S Dual Band May 24, 2019 No comments

“If you are in the market for a high gain HT antenna for those fringe areas, this may be for you. The Diamond SRH770s is very flexible for porta... Read more

The new dual band DMR smartphone announced by RFinder is the E81 May 18, 2019 No comments

Read more

Software New JTDX v2.0.1-rc136 available! May 23, 2019 No comments

  JT65 – JT9 – T10 – FT8 – WSPR JTDX 2.0.1-rc136 22nd May for evaluation and on air testing, this rc (release candidate)... Read more

Updated TQSL configuration file released (config.xml v11.8) May 22, 2019 No comments

May 22, 2019: Updated TQSL configuration file released (config.xml v11.8) — Config.xml version 11.8 has been released. This is a update release... Read more

News ISS Slow Scan TV June 5-6 May 24, 2019 No comments

A Russian MAI-SSTV event is planned from the International Space Station for Wednesday, June 5 from 12:00-16:00 GMT and June 6 from 11:30-15:30 GMT. A... Read more

“Identify and Track Down RFI” by KQ6RS – Wins the May QST Cover Plaque Award May 23, 2019 No comments

Source: ARRL Read more

(adsbygoogle = window.adsbygoogle || []).push({}); Equipment Ampleon announces the industry’s most rugged 2KW RF power LDMOS transistor for ISM applications May 22, 2019 No comments

Ampleon has released the first of a family of RF power devices based upon its Advanced Rugged Technology (ART) derivative of the proven 9th generation... Read more

XIEGU G1M HF TRANSCEIVER | QUAD BAND | PORTABLE SDR | QRP | 5W SSB CW AW May 22, 2019 No comments

XIEGU G1M [Entry Level QRP Transceiver] – With receiving 0.5-30 MHz generally and transmitting capabilities on four popular amateur radio bands,... Read more

Digital Modes LoTW Now Accepting FT4 Contact May 23, 2019 No comments

The latest TQSL update (Config.xml version 11.8), released on May 22, includes FT4 as a submode of MFSK. It also adds AISAT-1 and PO-101 in the satell... Read more

ADIF 3.1.0 was approved today May 22, 2019 No comments

Dave Bernstein reported this on the DXLabs support group today: ————————————... Read more

Portable TW Antenna May 24, 2019 No comments

“Preserving and building upon the legacy of this premier portable HF antenna line, DX Engineering is now the manufacturer of TW Antennas!* DX En... Read more

ISS Slow Scan TV June 5-6 May 24, 2019 No comments

A Russian MAI-SSTV event is planned from the International Space Station for Wednesday, June 5 from 12:00-16:00 GMT and June 6 from 11:30-15:30 GMT. A... Read more

The K7RA Solar Update 05/24/2019 – WPX CW 2019 May 24, 2019 No comments

May 18 was the last day we saw sunspot activity, after more than two weeks with daily sunspots visible. Average daily sunspot number declined to 5.3 t... Read more

Four-square eight directions antenna system, with dummy load power indicator and high power May 24, 2019 No comments

4SQ-8DIR antenna system The four-square phased-vertical array if used by many contesters and DXers for oreration on the low bands. This construction m... Read more

The Rigid Dual boom Quad from InnovAntennas – LFA-Q – 4el for 28MHz May 24, 2019 No comments

This example is installed at KJ4AJG and is a 4el for 28MHz. Tom is so impressed, he has ordered another to stack! If you don’t see one for a ban... Read more

The post Improved EU1KY Antenna Analyzer CEC V0.3 appeared first on QRZ NOW - Amateur Radio News.

“Identify and Track Down RFI” by KQ6RS – Wins the May QST Cover Plaque Award

Thu, 05/23/2019 - 16:10

Source: ARRL

(adsbygoogle = window.adsbygoogle || []).push({}); Propagation The K7RA Solar Update 05/24/2019 – WPX CW 2019 May 24, 2019 No comments

May 18 was the last day we saw sunspot activity, after more than two weeks with daily sunspots visible. Average daily sunspot number declined to 5.3 t... Read more

Our Sun Dims After Storming: Solar Storm Forecast 05-23-2019 May 23, 2019 No comments

Read more

VHF Super Gain HT Antenna By Diamond, SRH770S Dual Band May 24, 2019 No comments

“If you are in the market for a high gain HT antenna for those fringe areas, this may be for you. The Diamond SRH770s is very flexible for porta... Read more

The new dual band DMR smartphone announced by RFinder is the E81 May 18, 2019 No comments

Read more

Software New JTDX v2.0.1-rc136 available! May 23, 2019 No comments

  JT65 – JT9 – T10 – FT8 – WSPR JTDX 2.0.1-rc136 22nd May for evaluation and on air testing, this rc (release candidate)... Read more

Updated TQSL configuration file released (config.xml v11.8) May 22, 2019 No comments

May 22, 2019: Updated TQSL configuration file released (config.xml v11.8) — Config.xml version 11.8 has been released. This is a update release... Read more

News ISS Slow Scan TV June 5-6 May 24, 2019 No comments

A Russian MAI-SSTV event is planned from the International Space Station for Wednesday, June 5 from 12:00-16:00 GMT and June 6 from 11:30-15:30 GMT. A... Read more

“Identify and Track Down RFI” by KQ6RS – Wins the May QST Cover Plaque Award May 23, 2019 No comments

Source: ARRL Read more

(adsbygoogle = window.adsbygoogle || []).push({}); Equipment Ampleon announces the industry’s most rugged 2KW RF power LDMOS transistor for ISM applications May 22, 2019 No comments

Ampleon has released the first of a family of RF power devices based upon its Advanced Rugged Technology (ART) derivative of the proven 9th generation... Read more

XIEGU G1M HF TRANSCEIVER | QUAD BAND | PORTABLE SDR | QRP | 5W SSB CW AW May 22, 2019 No comments

XIEGU G1M [Entry Level QRP Transceiver] – With receiving 0.5-30 MHz generally and transmitting capabilities on four popular amateur radio bands,... Read more

Digital Modes LoTW Now Accepting FT4 Contact May 23, 2019 No comments

The latest TQSL update (Config.xml version 11.8), released on May 22, includes FT4 as a submode of MFSK. It also adds AISAT-1 and PO-101 in the satell... Read more

ADIF 3.1.0 was approved today May 22, 2019 No comments

Dave Bernstein reported this on the DXLabs support group today: ————————————... Read more

The post “Identify and Track Down RFI” by KQ6RS – Wins the May QST Cover Plaque Award appeared first on QRZ NOW - Amateur Radio News.

Our Sun Dims After Storming: Solar Storm Forecast 05-23-2019

Thu, 05/23/2019 - 15:54

(adsbygoogle = window.adsbygoogle || []).push({}); Antenna The CDAA Antenna and the Wullenweber January 30, 2015 No comments

A CDAA  of which the Wullenweber is a type, consists of a group of omnidirectional antennas symmetrically spaced about the periphery of a circular ref... Read more

Cheap, Quick, Easy to Build, Works Great QRP Portable Antenna! January 16, 2017 No comments

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40M UltraLight QRP magnetic loop antenna + TEST [ XIEGU X5105 ] February 06, 2019 No comments

“In this video I want to show you the 40M band UltraLight Magnetic Loop Antenna, how to setup it and testing in the real QRP conditions. During... Read more

ANTENNA LAUNCHER – THE AIR BOSS DEMONSTRATION October 18, 2016 No comments

The AIR BOSS antenna launcher was designed to launch a light fishing line over trees in order to create temporary antenna for ham radio operators. Sin... Read more

App - Mobile RS-MS1A – Remote Control Android App January 30, 2015 No comments

  Ray Novak and George Thomas show you how to control the ID-51A with the RS-MS1A Android app.   Read more

RUMlogNG2Go for iOS version 3.5.2 now available August 19, 2018 No comments

Thomas Lindner, DL2RUM, is happy to announce the availability of version 3.5.2 of his RUMlogNG2Go logger for the iPhone and iPad.  RUMlogNG2Go can be ... Read more

New iOS App Available for The ARRL Repeater Directory ® April 11, 2015 No comments

  The ARRL Repeater Directory ® — introduced this week for 2015-2016 — has a newly launched companion app for Apple® iOS® devices. iPhone®, iPad®... Read more

FlexRadio Systems Announces Partnership With DL8MRE – APP for Iphone August 05, 2016 No comments

FlexRadio Systems and Marcus Roskosch, DL8MRE announced today a partnership to develop, market and sell a client interface application for both iPad®... Read more

VHF Alinco DJ-G7T/E Tri-Band ( 144 , 430 and 1200MHz) March 05, 2015 No comments

  Get ready for action as you hear signals that you may never have heard before. The DJ-G7 tunes 0.530-1299.995MHz continuously, and you can enjo... Read more

50W Full Duty Cycle Digital Repeater – FR5200H / FR6200H IDAS VHF/UHF Digital Repeaters October 29, 2015 No comments

FR5200H / FR6200H IDAS VHF/UHF Digital Repeaters 50W 100% Duty cycle operation Employing a high performance power amplifier, together with the solid h... Read more

Introducing Hytera Multi-mode Advanced Radio Voice is still critical, enriched with broadband data May 23, 2017 No comments

Hytera, a leading global provider of innovative professional mobile radio (PMR) communications solutions, officially launched its highly anticipated L... Read more

Icom Provide Details of ID-4100E D-STAR VHF/UHF Mobile Radio March 01, 2017 No comments

Icom Inc has issued preliminary details of a new D-STAR mobile radio called the ID-4100E. The radio will come with the new terminal and access point m... Read more

News ISS Slow Scan TV June 5-6 May 24, 2019 No comments

A Russian MAI-SSTV event is planned from the International Space Station for Wednesday, June 5 from 12:00-16:00 GMT and June 6 from 11:30-15:30 GMT. A... Read more

“Identify and Track Down RFI” by KQ6RS – Wins the May QST Cover Plaque Award May 23, 2019 No comments

Source: ARRL Read more

Dayton Hamvention Review – Ham Nation 403 May 23, 2019 No comments

All about the 2019 Dayton Hamvention. Bob, Gordo, Don and George are back from Dayton to talk about their experience in Dayton for the 2019 Hamvention... Read more

Airspy HF+ Discovery on pre-order May 23, 2019 No comments

Rediscover HF Again! Building on the field-proven Airspy HF+ architecture, we designed the Most Refined HF/VHF SDR with world class performance in the... Read more

Digital Modes LoTW Now Accepting FT4 Contact May 23, 2019 No comments

The latest TQSL update (Config.xml version 11.8), released on May 22, includes FT4 as a submode of MFSK. It also adds AISAT-1 and PO-101 in the satell... Read more

ADIF 3.1.0 was approved today May 22, 2019 No comments

Dave Bernstein reported this on the DXLabs support group today: ————————————... Read more

FT4 vs FT8 – A new mode, what’s the difference? May 01, 2019 No comments

The FT4 Protocol for Digital Contesting by K1JT   Read more

New FT4 Mode with more 20K spots in few your hours realese April 29, 2019 No comments

    Source: LINK WSJTX 2.1.0RC5 Release! – The FT4 Protocol for Digital Contesting  The FT4 Protocol for Digital Contesting by K1J... Read more

The post Our Sun Dims After Storming: Solar Storm Forecast 05-23-2019 appeared first on QRZ NOW - Amateur Radio News.

Dayton Hamvention Review – Ham Nation 403

Thu, 05/23/2019 - 11:31

All about the 2019 Dayton Hamvention. Bob, Gordo, Don and George are back from Dayton to talk about their experience in Dayton for the 2019 Hamvention! Hosts: Bob Heil, Gordon West, George Thomas, Don Wilbanks, Amanda Alden

(adsbygoogle = window.adsbygoogle || []).push({}); Equipment HF Linear 2KW HF2015DX – Chinese November 18, 2015 No comments

HF2015DX RF Linear amplifier  coverd 1.8-30MHz amateur band , using Chinese FU728F ceramic tetrodes  working at  Class AB1 Input:30-40W  output:2000W... Read more

RM Italy BLA 600 HF/6M 500 Watts Amp & HBF 1000 1KW HF/6M Low Pass Filter in the Dayton 2016 May 22, 2016 No comments

RM Italy   Read more

LA1K5 is a solid-state 1200 watts 1.8 – 54MHz power amplifier September 19, 2018 No comments

The RFpower LA1K5 is a solid-state 1200 watts 1.8 – 54MHz power amplifier. It uses a ruggedness 1800 watts 65 V LDMOS technology NXP’s MRF... Read more

Station Master DeLuxe – microHam December 16, 2014 No comments

    Station Master DeLuxe is big brother of regular Station Master and has all its capabilities but provides more ergonomic user interface with... Read more

Digital Modes ADIF 3.1.0 was approved today May 22, 2019 No comments

Dave Bernstein reported this on the DXLabs support group today: ————————————... Read more

FT4 vs FT8 – A new mode, what’s the difference? May 01, 2019 No comments

The FT4 Protocol for Digital Contesting by K1JT   Read more

New FT4 Mode with more 20K spots in few your hours realese April 29, 2019 No comments

    Source: LINK WSJTX 2.1.0RC5 Release! – The FT4 Protocol for Digital Contesting  The FT4 Protocol for Digital Contesting by K1J... Read more

FT4 Video presentation by K1JT April 24, 2019 No comments

See More about New FT4 Here “At about 20 minutes into the presentation, Joe describes FT4 as being asynchronous, meaning that you can start tran... Read more

(adsbygoogle = window.adsbygoogle || []).push({}); Propagation RSGB – New propagation prediction tool released May 23, 2019 No comments

The RSGB’s Propagation Studies Committee (PSC) has released a new propagation tool for amateurs, based on the ITU’s ITURHFPROP program. The tool is th... Read more

Solar Storm Slam Dance | Space Weather News 05.15.2019 May 15, 2019 No comments

“The Sun gets crazy busy this week with multiple solar storms that are inbound to earth! We should feel the first of the direct hits sometime Ma... Read more

A strong (G3) geomagnetic storm is currently in progress May 14, 2019 No comments

Surprise! A strong (G3) geomagnetic storm is currently in progress thanks to an enhanced solar wind stream containing a sharply south pointing Bz. Vis... Read more

Direct Hit After a Long Wait: Solar Storm Forecast 05-09-2019 May 09, 2019 No comments

This is amazing! AR 12740, which is an old cycle region and I honestly have not expected much, has produced a C9.9 (almost M-class) flare. The flare w... Read more

 

Review QRP Labs at the 2019 Dayton Hamvention® May 22, 2019 No comments

Read more

Ailunce HS1 First Impressions HF SDR Radio! May 21, 2019 No comments

A short-wave radio station is a radio communication device that operates at a wavelength of 100 to 10 meters (frequency of 3 to 30 MHz). Mainly used f... Read more

Elecraft K4 Debut from 2019 Dayton Hamvention May 21, 2019 No comments

Elecraft K4 Read more

FlexRadio Announce MultiFlex Software at Dayton Hamvention 2019 May 20, 2019 No comments

Read more

 

The post Dayton Hamvention Review – Ham Nation 403 appeared first on QRZ NOW - Amateur Radio News.

RSGB – New propagation prediction tool released

Thu, 05/23/2019 - 10:06

The RSGB’s Propagation Studies Committee (PSC) has released a new propagation tool for amateurs, based on the ITU’s ITURHFPROP program. The tool is the work of programmer and PSC member James Watson, HZ1JW.

The new tool gives you hour-by-hour monthly median propagation predictions from a location you specify to one of 28 locations around the world. Predictions are performed between the user’s position, expressed as a Maidenhead Locator (or the default value of IO92 if not specified). In some cases, performance for both long and short paths is evaluated.

The results are presented in tables, with colours used to represent the Basic Circuit Reliability (BCR), and numeric values to indicate the predicted median receive power (expressed in S Levels). As well as specifying your mode (SSB, CW, FT8 and others), you can also choose from a wide range of antenna types at both ends of the path. A tool to select your noise level is also included.

The tool also loads the results two at a time so that you don’t get an awkward 20+ second delay while the computations are completed. The details you input are cached, so that you should not need to change them the next time you use the program. Users also have the ability to print out the month’s predictions as a PDF file.

The tool can be found here.

(adsbygoogle = window.adsbygoogle || []).push({}); Review QRP Labs at the 2019 Dayton Hamvention® May 22, 2019 No comments

Read more

Ailunce HS1 First Impressions HF SDR Radio! May 21, 2019 No comments

A short-wave radio station is a radio communication device that operates at a wavelength of 100 to 10 meters (frequency of 3 to 30 MHz). Mainly used f... Read more

Elecraft K4 Debut from 2019 Dayton Hamvention May 21, 2019 No comments

Elecraft K4 Read more

FlexRadio Announce MultiFlex Software at Dayton Hamvention 2019 May 20, 2019 No comments

Read more

Digital Modes ADIF 3.1.0 was approved today May 22, 2019 No comments

Dave Bernstein reported this on the DXLabs support group today: ————————————... Read more

FT4 vs FT8 – A new mode, what’s the difference? May 01, 2019 No comments

The FT4 Protocol for Digital Contesting by K1JT   Read more

New FT4 Mode with more 20K spots in few your hours realese April 29, 2019 No comments

    Source: LINK WSJTX 2.1.0RC5 Release! – The FT4 Protocol for Digital Contesting  The FT4 Protocol for Digital Contesting by K1J... Read more

FT4 Video presentation by K1JT April 24, 2019 No comments

See More about New FT4 Here “At about 20 minutes into the presentation, Joe describes FT4 as being asynchronous, meaning that you can start tran... Read more

(adsbygoogle = window.adsbygoogle || []).push({}); VHF The new dual band DMR smartphone announced by RFinder is the E81 May 18, 2019 No comments

Read more

Introducing three new Yaesu FT3-DR – Hamvention May 17, 2019 No comments

Read more

Yaesu FT-3DR C4FM/FM Dual Band Transceiver May 15, 2019 No comments

Yaesu FT-3DR Yaesu FT-3DR 5W C4FM/FM 144/430MHz Dual Band Digital Transceiver Reservation The new FT3DR provides reliable 5W RF power output in compac... Read more

Amateur Radio Roundtable to Livestream 50 Hours of Dayton Hamvention® May 15, 2019 No comments

Amateur Radio Roundtable and host Tom Medlin, W5KUB, will be back at Dayton Hamvention to livestream the activity and action before, during, and after... Read more

News Dayton Hamvention Review – Ham Nation 403 May 23, 2019 No comments

All about the 2019 Dayton Hamvention. Bob, Gordo, Don and George are back from Dayton to talk about their experience in Dayton for the 2019 Hamvention... Read more

Airspy HF+ Discovery on pre-order May 23, 2019 No comments

Rediscover HF Again! Building on the field-proven Airspy HF+ architecture, we designed the Most Refined HF/VHF SDR with world class performance in the... Read more

The new Elecraft K4 [ VIDEO ] May 22, 2019 No comments

    Read more

A Look at Vintage Ham Radio Gear Hamvention Flea Market [ Video ] May 21, 2019 No comments

Read more

 

The post RSGB – New propagation prediction tool released appeared first on QRZ NOW - Amateur Radio News.

New JTDX v2.0.1-rc136 available!

Thu, 05/23/2019 - 08:02

 

JT65 – JT9 – T10 – FT8 – WSPR

JTDX 2.0.1-rc136 22nd May for evaluation and on air testing, this rc (release candidate) has no contest function.

Please read and make yourself familiar with the changelogs and instructions before testing any new features.
If you are comfortable using step software please report any issues found in the group.
If you are not comfortable using step software for trial, testing please do not install and continue to use existing release version please.
Please carry out a clean install, see guides, JTDXT10 YouTube, this preserves your installed version as these steps are for testing and evaluation.
If you experience any issues please carry out a new, clean install using a unique rig name for the clean install, please do not delete your old version, backup your log and other files relevant to JTDX and assign a “unique rig name to this installation”

 

 

Guides

 

Videos

 

See More : http://jtdx.tech/en/

(adsbygoogle = window.adsbygoogle || []).push({}); App - Mobile What is Echolink? Ham Radio 2.0: Episode 56 September 01, 2016 No comments

Mark Goodrum, W5MHG, discusses Echolink for Ham Radio at the Duke City Hamfest Read more

Training fast CW on Android (Koch method) March 12, 2015 No comments

    The user starts by recognizing only two letters, M and K, at high speed (at least 20WPM) on a 5 minutes session. When she or he will be able... Read more

Amateur Radio Ringtone from NASA February 25, 2015 No comments

Download NASA Sounds Here’s a collection of NASA sounds from historic spaceflights and current missions. You can hear the roar of a space shuttl... Read more

News Dayton Hamvention Review – Ham Nation 403 May 23, 2019 No comments

All about the 2019 Dayton Hamvention. Bob, Gordo, Don and George are back from Dayton to talk about their experience in Dayton for the 2019 Hamvention... Read more

Airspy HF+ Discovery on pre-order May 23, 2019 No comments

Rediscover HF Again! Building on the field-proven Airspy HF+ architecture, we designed the Most Refined HF/VHF SDR with world class performance in the... Read more

The new Elecraft K4 [ VIDEO ] May 22, 2019 No comments

    Read more

Equipment HG-1 PORTABLE REMOTE LOOP TUNER August 27, 2018 No comments

The HG-1 Remote Loop Tuner (available June 1, 2018) is a compact, easy-to-use remote tuner for a Magnetic Loop Antenna (MLA). It is designed specifica... Read more

Yaesu FTdx101D [ VIDEO ] January 04, 2019 No comments

In homage to YAESU Musen Founder, Sako Hasegawa, Yaesu Japan is excited to introduce a new High-Class HF/50/70MHz Transceiver, the all-new FTdx101D (1... Read more

YouKits HB1B upgrade January 06, 2015 No comments

  “RadioSet-GO, your source for unique, trail friendly QRP radio designs; simple, efficient, portable, and attractive all-in-one low power... Read more

(adsbygoogle = window.adsbygoogle || []).push({}); Review Building an Ultra Portable Go-Box December 04, 2016 No comments

  LUITON LT-898UV Dual Band Mobile Main features: 1. Dual band: 136-174MHz/400-470MHz/245MHz (Receive only) ; 2. Dual Reception/Dual Display ; 3.... Read more

SPE 2K-FA Amplifier – ARRL Review September 11, 2016 No comments

2 KW Solid State Fully Automatic Linear Amplifier The smallest in its class. Built-in Power supply and Automatic Antenna Tuner. Dimension: L 38, H 18.... Read more

Using the MFJ-1788 Mag Loop Antenna Horizontally June 07, 2018 No comments

“I test the MFJ-1788 in a horizontal position on my rooftop. The performance is great on 20m. I used an MFJ Cobweb antenna as the comparison ant... Read more

Yaesu FT-818 – Unboxing [ Video ] March 28, 2018 No comments

The new FT-818 incorporates all the many basic and attractive features of the ever-popular FT-817ND while providing upgrades desired by many existing... Read more

 

The post New JTDX v2.0.1-rc136 available! appeared first on QRZ NOW - Amateur Radio News.

Airspy HF+ Discovery on pre-order

Thu, 05/23/2019 - 07:40
Rediscover HF Again!

Building on the field-proven Airspy HF+ architecture, we designed the Most Refined HF/VHF SDR with world class performance in the smallest form factor.

The Airspy HF+ Discovery sets a new standard in terms of reception performance with extra pre-selectors for all the supported bands and a New DSP Core to optimize the gain distribution and the filtering parameters in real-time and dig deeper in the noise.

The signal path includes very high dynamic range data converters along with high performance passive mixers with an excellent Polyphase Harmonic Rejection structure. The included band-tracking pre-selectors eliminate unwanted interference and preserve the dynamic range of the receiver. With its world class strong signal handling capability and incredibly Low Noise, the HF+ Discovery is the ideal companion for All your High Performance Receive Scenarios.

Both the architecture and level of integration achieved in this design allow us to bring top performance reception at a very affordable price.
All the major SDR software is supported. Check the download page.

Ready to discover all these signals hiding in your spectrum?

Unrivalled Noise Reduction Processing

We spent a lot of time understanding RF noise, its structure, and how it interacts with legitimate signals. Today, we have one of the most flexible and acoustically pleasant noise reduction algorithms of the market. The applications range from high-fidelity hiss removal for Broadcast FM signals, to unburying weak SSB signals from the noise floor. Our algorithm doesn’t kill the highs to give you a false impression of loudness, yet it doesn’t have the typical high tone artifacts that plague popular noise reduction algorithms like LMS and Spectral Subtraction.
Here’s a very weak SSB signal in the 40m band, with and without our Digital Noise Reduction

 

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Audio signal without processing:

Audio signal with our Digital Noise Reduction processing:

State of the Art SDR streaming technology!

We concentrated state of the art DSP and networking techniques into our SpyServer software to allow multiple users to stream high quality IQ data from the same receiver at the same time. No compromises in the quality were made like it is usually done in Web SDR interfaces. You get actual IQ data you can process with your plugins and extract the last bit of information out of it.
The server software is highly scalable and can run on computers as small as the $7 Orange Pi Zero to top end 64bit servers with multiple cores/cpus, including the popular Raspberry Pi series.

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Airspy HF+ Discovery achieves excellent HF performance by means of a low-loss preselection filterhigh linearity LNAhigh linearity tunable RF filter, a polyphase harmonic rejection (HR) mixer that rejects up to the 21st harmonic and multi-stage analog and digital IF filtering.
The 6 dB-stepped AGC gain is fully controlled by the software running in the DSP which optimizes the gain distribution in real time for optimal sensitivity and linearity. Harmonic rejection is a key issue in wide band HF receivers because of the large input signal bandwidth of the input signal. The output of the IF-filter is then digitalized by a high dynamic range sigma delta IF ADC for further signal processing in the digital domain.

VHF Tuners

Excellent FM performance is also achieved by using optimized signal paths composed of band filtershigh linearity LNAs with a stepped AGC, a polyphase harmonic rejection mixer and IF filters optimized for the FM broadcast bands.
The amplifier gain is switchable in 3 dB-steps and fully controlled by the AGC running in the DSP. The RF signal is converted to baseband by a high linearity passive mixer with a polyphase harmonic rejection structure. The low-IF signal is then converted into the digital domain by the same IF ADC used in the HF chain.
Extended VHF coverage is assured by a second Band-III tuner up to 260 MHz, but with reduced performance.

IF Sampling

The IF analog to digital converter (ADC) is a 4th order multi-bit noise shaping topology; it features very high dynamic range and linearity. The IF-ADC sampling rate is determined by a control algorithm running in the embedded DSP. This advanced technique adjusts the sampling rate depending on the tuning frequency with the goal of avoiding the disturbances and spurs generated by the switching discrete-time sections of the IF-ADC.

Digital Down Converter

Once the IF signal is digitalized, the high sample rate I/Q stream is then frequency translated and processed with cascaded CIC and FIR decimation stages. After every stage, the sample rate is reduced and the resolution increased. The final signal at the output has 18bit resolution and an alias rejection performance of 108 dBc. The data is then scaled to 16bit and sent to the Micro-Controller for streaming over USB.

Architectural Advantages

The main advantages over techniques from the legacy super-heterodynes up to the now mainstream direct sampling is that the whole receiver chain is well protected against out of band blockers while still relaxing the RF filtering constraints, making it simple and cost effective.
The natural filtering of the sigma-delta ADC combined with the excellent linearity and sensitivity of the analog chain reaches an unprecedented level of performance and integration.

Use it over the network!

Connect as many SDR applications as needed to the HF+ Discovery, over the Internet or in your own local network with near zero latency thanks to the new SPY Server software.
This setup basically brings all the flexibility of Web based SDRs while still benefiting from the full power of desktop applications. The IQ data is processed in the server with state of the art DSP and only the required chunk of spectrum is sent over the network. What is sent is the actual IQ signal, not compressed audio. This means you can use all your favorite plugins to process the IF, eliminate noise and perform heavy lifting of the signals as you are used to do with locally connected SDR’s.
We have a tradition of building multi-tools, so we made sure the SPY Server runs on 32/64bit Windows and Linux on Intel and ARM processors without any compromises. Low cost Raspberry Pi 3 and Odroid boards are in the party.

Technical specifications
  • HF coverage between 0.5 kHz .. 31 MHz
  • VHF coverage between 60 .. 260 MHz
  • -140.0 dBm (0.02 µV / 50 ohms at 15MHz) MDS Typ. at 500Hz bandwidth in HF
  • -141.5 dBm MDS Typ. at 500 Hz bandwidth in FM Broadcast Band (64 – 118 MHz)
  • -141.0 dBm MDS Typ. at 500 Hz bandwidth in VHF Aviation Band (118 – 260 MHz)
  • +15 dBm IIP3 on HF at maximum gain
  • +13 dBm IIP3 on VHF at maximum gain
  • 110 dB blocking dynamic range (BDR) in HF
  • 95 dB blocking dynamic range (BDR) in VHF
  • 150+ dB combined selectivity (hardware + software)
  • 120 dB Image Rejection (software)
  • Polyphase Tracking filters for close range interference suppression
  • New High Performance Pre-selector for HF with 4 filter banks (corners at ~DC, 5, 10, 17 and 31 MHz)
  • New High Performance Pre-selector for VHF (Air, HAM, Commercial and Military VHF)
  • New High Performance Pre-selector for the FM band (Japan, US, EU, OIRT)
  • Up to 660 kHz alias and image free output for 768 ksps IQ
  • 18 bit Embedded Digital Down Converter (DDC)
  • 22 bit Resolution at 3 kHz channel using State of the Art DDC (SDR# and SDR-Console)
  • +10 dBm Maximum RF input
  • 0.5 ppm high precision, low phase noise clock
  • 1 PPB frequency adjustment capability
  • Very low phase noise PLL (-110 dBc/Hz @ 1kHz separation @ 100 MHz)
  • Best Noise reduction of the market using state of the art algorithms
  • 2 x High Dynamic Range Sigma Delta ADCs @ up to 36 MSPS
  • Single RF Input to cover all bands with High Linearity switching
  • Improved input matching down to virtually DC
  • Smart AGC with real time optimization of the gain distribution for Best SNR in all situations
  • No drivers required! 100% Plug-and-play on Windows Vista, Seven, 8, 8.1 and 10
  • Industrial Operating Temperature: -45°C to 85°C
  • Ultra small Form Factor: 45 x 60 x 10 mm
Typical Applications
  • High Performance Networked HF/VHF Radio
  • Ham Radio (HF + 2m)
  • Short Wave Listening (SWL)
  • AM DX
  • FM DX
  • VHF-L TV DX
  • Remote Telemetry Radio Receiver
  • Low Bands IoT
Product Limitation
  • While the in-band performance of the Band-III tuner is excellent, it will require some filtering for very strong out of band signals at multiples of the tuned frequency.
  • An RF isolator is required when using long wire antennas with a PC with moderate EMI protection.
Supported Software Supported Operating Systems
  • Windows Vista, 7, 8, 8.1 and 10
  • Linux
  • *BSD
  • OSX
Supported Hardware
  • Intel compatible PC
  • Raspberry Pi 2 and 3
  • Odroid C1, C2 and XU4
  • Many other Single Board Computers (SBC)
Minimum hardware requirements
  • 1GHz Pentium or ARM
  • 1GB of RAM (to run your own OS, HF+ barely needs 1MB of memory)
  • High speed USB 2.0 controller
Fully Open-Source driver Firmware Updates

R2.0.0 2019-05-02 (Changelog)

 

We are pleased to announce the availability of the Airspy HF+ Discovery on pre-order.

Details:https://t.co/Cmfg0qCMc0

Airspy Fans Coupon: AIRSPY2019https://t.co/VdEQSEG4Ndhttps://t.co/jusDbIK58Z#Retweet to win a free unit! pic.twitter.com/s5EDx92jxb

— prog’ (@lambdaprog) May 23, 2019

Recent Posts Dayton Hamvention Review – Ham Nation 403 May 23, 2019 in: News No comments

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Do Dipoles Have to be Straight? [ The Doctor is In Podcast ARRL ]

Thu, 05/23/2019 - 06:27



Image Source : Wikpedia

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Ampleon announces the industry’s most rugged 2KW RF power LDMOS transistor for ISM applications

Wed, 05/22/2019 - 18:15

Ampleon has released the first of a family of RF power devices based upon its Advanced Rugged Technology (ART) derivative of the proven 9th generation high voltage LDMOS process technology. The process has been developed to enable the implementation of extremely rugged transistors with operating voltages of up to 65V. 

The first product to use the process, the ART2K0FE, is a 2KW transistor with a frequency response of 0 to 650MHz, offered in an air-cavity ceramic package. It is designed to withstand the harshest conditions often found in  industrial, scientific and medical applications, in roles including driving high-power CO2 lasers, plasma generators, and some MRI systems. The ART devices are suitable for use in these applications because they can handle very high voltage standing-wave ratio (VSWR) mismatches of 65:1 at 65V, which CO2 lasers and plasma generators can exhibit in operation. 

Devices built on the ART process have high impedances to make them easier to integrate into products during the development phase, and to ensure greater product consistency in mass production. The process also enables devices to be built that have greater efficiency than competing LDMOS offerings. This reduces the operating costs of end applications by wasting less of the input electrical energy as heat. It also allows the devices to have greater power density, which means they can be offered in smaller and lower-cost packages, which in turn reduces their board footprint and so cuts systemic costs.

The ART devices also have a high breakdown voltage, which helps ensure that they will work consistently and reliably throughout their intended lifespan. Ampleon is also guaranteeing that the devices will be available for 15 years, to enable product designers to plan for the long term.

The ART2K0FE in an air cavity ceramic package is now sampling with reference circuits available at different frequencies. Ampleon also offers a lower thermal resistance over-moulded plastic version, the ART2K0PE. Production for both variants is expected in the second half of 2019.

+++Ends

For further information and reader enquiries:

Natascha Jellema, Project Manager Corporate Communications

Ampleon Netherlands B.V.,

Halfgeleiderweg 8, 6534 AV Nijmegen, The Netherlands

Tel: +31 6 208 14 771,

Email: natascha.jellema@ampleon.com,

www.ampleon.com

For further information, text and graphics by email or to discuss feature article opportunities:

Robert Huntley, Director

Publitek Limited,

Tel: +44 1225 470000,

Email: robert.huntley@publitek.com,

www.publitek.com

About Ampleon:

Created in 2015, Ampleon is shaped by 50 years of RF power leadership and is set to exploit the full potential of data and energy transfer in RF. Ampleon has more than 1,350 employees worldwide, dedicated to creating optimal value for customers. Its innovative, yet consistent portfolio offers products and solutions for a wide range of applications, such as mobile broadband infrastructure, radio & TV broadcasting, CO2 lasers & plasma, MRI, particle accelerators, radar & air-traffic control, non-cellular communications, RF cooking & defrosting, RF heating and plasma lighting. For details on the leading global partner in RF Power, visit www.ampleon.com

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Updated TQSL configuration file released (config.xml v11.8)

Wed, 05/22/2019 - 15:49

May 22, 2019: Updated TQSL configuration file released (config.xml v11.8) —

Config.xml version 11.8 has been released.

This is a update release containing additions made since the release of config.xml  version 11.7

Changed in this release: 

  • In the Satellite enumeration, added entries for:
    • AISAT1 — AISAT-1 AMSAT India APRS Digipeater
    • PO-101 — Phillipines-OSCAR-101 (Diwata-2)
  • In the ADIFMODE enumeration, added and entry for:
    • FT4 as submode of MFSK

https://lotw.arrl.org

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QRP Labs at the 2019 Dayton Hamvention®

Wed, 05/22/2019 - 15:33

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The new Elecraft K4 [ VIDEO ]

Wed, 05/22/2019 - 09:24

 

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ADIF 3.1.0 was approved today

Wed, 05/22/2019 - 09:07

Dave Bernstein reported this on the DXLabs support group today:
—————————————————————–
ADIF 3.1.0 was approved today:

ADIF 3.1.0 specifies that the representation for FT4 is an ADIF record is

<MODE:4>MFSK <SUBMODE:3>FT4

This is the representation used in the current version of DXKeeper (14.9.2) when exporting an ADIF record. When importing an ADIF record, DXKeeper interprets both

<MODE:4>MFSK <SUBMODE:3>FT4

and

<MODE:3>FT4

to mean “QSO mode is FT4”.

As the software sages say, “Be precise when exporting, but tolerant when importing”.

73,

Dave, AA6YQ

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