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Preliminary Results from Field Day:
Field Day off to a slow start in North Florida..
Looking to Buy - Aluma tower T-140 40 ft Crank-up tower - by KI4UCW
Looking to Sell - Johnson Matchbox - by NW0LF
Looking to Sell - TENNADYNE T6 log periodic antenna - by N9HF
News Feeds
The K7RA Solar Update
This vintage tech store makes every man drool | Planet Surplus | ChadGallivanter
Receive pictures from space

The K7RA Solar Update

Posted on Friday July 21, 2017, 10:10 pm by Amateur Radio Newsline

Average daily sunspot number this week declined just 1.7 to 26.6, even though there were two days in the reporting week with no sunspots, July 18-19. The blank Sun condition continued at least one more day on Thursday, July 20 which lands it on the first day of the next reporting week, July 20-26.

Average daily solar flux was 85.9, down 1.1 from the previous week.

Average planetary A index rose 3.9 points to 13, average mid-latitude A index rose from 9.6 to 10.9.

A coronal mass ejection (CME) on July 16 struck at 0545 UTC driving the planetary A index to 41, and 27 the following day.

Predicted solar flux is 70 on July 21-27, 75 on July 28, 90 on July 29 through August 11, 85 on August 12-13, 80 on August 14, 74 on August 15-19, 75 on August 20-24, and 90 on August 25 to September 3.

Predicted planetary A index is 8, 12 and 8 on July 21-23, 5 on July 24 through August 4, then 25, 10 and 8 on August 5-7, 5 on August 8-14, 8 on August 15-16, then 15 and 12 on August 17-18, 5 on August 19-31, and 25, 10 and 8 on September 1-3....
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This vintage tech store makes every man drool | Planet Surplus | ChadGallivanter

Posted on Friday July 21, 2017, 9:18 am by Planet Surplus

Upon advice from a buddy of mine, I traveled to New Smyrna Beach to do some shopping at one of the best stores for men in Florida. Housed in a strip mall on US 1, Planet Surplus is a tinkerer's dream. This former hardware store is packed with electro-industrial and techno-scientific parts and items you simply won't find anywhere else. It's a great place to go if you need to stock the man cave or if you want to get away from the wife for a few hours!

Thanks for watching!

Receive pictures from space

Posted on Friday July 21, 2017, 8:51 am by Amateur Radio Newsline

The International Space Station is transmitting SSTV pictures to radio amateurs around the world on 145.800 MHz FM

The Slow Scan Television image transmissions are expected to continue until 1800 GMT Sunday, July 23 and can be received on simple equipment such as a handheld radio or scanner with an outside antenna.
Some of the pictures already received can be seen at

Useful links on receiving SSTV from the ISS

ARISS Celebrates its 20th Anniversary through SSTV Event
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Revised FCC Form 605 Will Ask Applicants “the Felony Question”

Posted on Thursday July 20, 2017, 7:16 am by

A revised FCC Form 605 — Quick-Form Application for Authorization in the Ship, Aircraft, Amateur, Restricted and Commercial Operator, and General Mobile Radio Services — going into effect in September will ask all applicants to indicate if they have been convicted of or pled guilty to a felony. The FCC used to ask “the felony question” on the old Form 610 and still does on other applications. It’s now expanding it to Form 605, apparently for uniformity. Applicants’ responses and explanations will be used to determine eligibility to be a Commission licensee. The FCC told ARRL that it’s still deciding whether to issue a public notice on the change....
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Arduino UNO Portable Lab Case

Posted on Wednesday July 19, 2017, 2:42 pm by AJ4MQ

Hi guys,

I would like to show you my last creation. It's a Arduino UNO Portable Lab Case.

Since I bought my Arduino Starter Kit, I always wanted to design a portable ARDUINO case with an integrated Breadboard. A portable Arduino Lab that i can put in the bag and take it with me. It is a very stylish case, with a solid hinge and lock mechanism. It has two side holes to insert a wrist strap.

Printer: Ultimaker 2

Supports: No
Print Speed: 45 mm/s
Outer Shell Speed: 35 mm/s
Infill: 25%
Layer Height: 150 Micron (0.15 mm)
Shell Thickness: 0.8 mm
Bottom/Top Thickness: 0.8 mm

Available for download here:

Ham researcher to investigate effects of solar eclipse

Posted on Tuesday July 18, 2017, 4:30 pm by KB6NU

By Dan Romanchik, KB6NU

August 21 is a once-in-a-lifetime opportunity for many in the U.S. to see a total eclipse. It's also an opportunity for a team of Virginia Tech researchers to study the effects of the eclipse onchanges in the upper atmosphere that have an impact onHF propagation and the global positioning system (GPS). Backed by research funding from NASA and the National Science foundation, the team is headed by Dr. Greg Earle, W4GDE.

The Virginia Tech team plans to gather data from a variety of sources, including radar systems, transceivers, satellites, ham radio, and GPS receivers, in order to analyze the effects of the solar eclipse on the conductive region of the atmosphere.

“Whether military radar, or consumer GPS signals, the eclipse is going to have effects on the medium that we would like to understand better, so that we can either mitigate them or use them to our advantage,” said Earle....
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VY0RAC is on the air from VY0ERC for the RAC 150 award

Posted on Monday July 17, 2017, 4:10 pm by Amateur Radio Newsline

Pierre Fogal, VE3KTB, is now putting VY0RAC on the air from VY0ERC for the RAC 150 award!

To commemorate Canada’s 150th birthday, Radio Amateurs of Canada, with the assistance of a team of talented and dedicated volunteers, is pleased to present the RAC 150 Award program. Starting with the RAC Canada Day Contest on July 1, the 14 special RAC call signs are now being activated by volunteers throughout the second half of 2017.

RAC holds club call signs in all 14 of Canada's call areas. These are: VA2RAC, VA3RAC, VE1RAC, VE4RAC, VE5RAC, VE6RAC, VE7RAC, VE8RAC, VE9RAC, VO1RAC, VO2RAC, VY0RAC, VY1RAC and VY2RAC. These call signs are used to promote RAC and interest by Amateurs in RAC.

Contacts with stations using RAC call signs count towards certain RAC awards such as the Worked All RAC Award and the RAC Canada 150 Award. In certain contests, such as the RAC Canada Day Contest, the RAC Winter Contest, the IARU HF Championship and the RSGB Commonwealth Contest, RAC call signs designate HQ or bonus stations that may count for extra points under the applicable contest rules....
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DXCC rules are about to change

Posted on Monday July 17, 2017, 4:09 pm by Amateur Radio Newsline

(It's Been a While)

Wayne Mills, N7NG, at DX University reports (on July 12th): "Yes, it's been a while -- too long -- since I have reached for the keyboard to express some fact and opinion.
In July 2004, changes were made to the DXCC List Criteria that -- as time would tell -- rendered the criteria ineffective."

In the article written by Wayne, he goes on states, "We hope to see a change coming within the next ten days (ed. which would be July 22nd). Much effort has gone into the process required to effect this change.
On Monday (ed. July 17th), on this page (ed. see Web page below), I will elaborate on the original 'situation' and its effects. Why it happened, and how we proposed to fix it."

Wayne's complete article was on the "DX University" Web site, but has since been removed. It can now be found on:
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The International Exhibition of Radio Amateurs, HAM RADIO 2017, will be held July 14-16 in Friedrichshafen, Germany.

Posted on Saturday July 15, 2017, 4:59 am by ARRL

The event is billed as Europe's biggest Amateur Radio convention and is held annually in the Lake Constance region. This is the 42nd international Amateur Radio exhibition and the 68th Lake Constance Convention of Radio Amateurs, sponsored by the German Amateur Radio Club (DARC), which gave rise to the fair. This year's theme is "Germany welcomes the world." Each year, a contingent from ARRL, the national association for Amateur Radio in the US, has attended this convention in Germany--greeting its non-US members and networking with other national radio societies. ARRL also supports DXCC card checking at its booth--a very popular award program among the international community that travels to this large show. ARRL representatives will include ARRL President Rick Roderick, K5UR; International Affairs Vice President Jay Bellows, K0QB, and ARRL staff members Norm Fusaro, W3IZ and Bob Inderbitzen, NQ1R. Some 200 exhibitors and associations from 30 countries are expected to attend.

Ofcom decision permitting 5.8 GHz Wi-Fi

Posted on Friday July 14, 2017, 9:57 am by Amateur Radio Newsline

Ofcom has published a decision to make regulations allowing Wi-Fi use in the Amateur and Amateur Satellite Services 5725-5850 MHz band

Many Wi-Fi routers in the UK currently use a part of the spectrum called the 2.4 GHz band, which is becoming increasingly congested and can impair broadband performance. Many people have newer broadband routers, which use not only the 2.4 GHz band, but also the 5 GHz band – which has much more spectrum and is less congested.

To make connections faster, we are making regulations to open an additional 125 MHz of spectrum in a ‘sub-band’ within the 5 GHz frequency range for Wi-Fi – while ensuring protection for other users, such as satellite services.

The extra sub-band increases the number of 80 MHz channels available for Wi-Fi from four to six.



A CME IS COMING: Huge sunspot AR2665 exploded on July 14th

Posted on Friday July 14, 2017, 8:11 am by Amateur Radio Newsline

A CME IS COMING: Huge sunspot AR2665 exploded on July 14th and hurled a bright coronal mass ejection (CME) into space. The expanding cloud will likely reach Earth on July 16th, sparking geomagnetic storms and high-latitude auroras. Stay tuned for improved predictions as NOAA analysts model the trajectory of the incoming CME.

Baker Island DXpedition

Posted on Thursday July 13, 2017, 11:33 am by Amateur Radio Newsline

The Dateline DX Association (most recently the K4M team) is very pleased to announce that it has been selected by the Pacific Islands Refuges & Monuments Office of the US Fish and Wildlife Service to pursue an Amateur Radio expedition to Baker Island National Wildlife Refuge (KH1).

We will announce dates of activation and other pertinent information once a vessel has been selected and approval of said vessel and dates is approved by the Service.

We wish to thank the US Fish and Wildlife Service for their trust in our group to safely and responsibly activate this rare location.

Don Greenbaum, N1DG, Tom Harrell, N4XP, and Kevin Rowett, K6TD co-leaders

ADDED NOTE: Also read the following ARRL News Note:



Radio hams thanked

Posted on Thursday July 13, 2017, 11:31 am by Amateur Radio Newsline

The Parsons Advocate in West Virginia reports County Commission president Lowell Moore has thanked amateur radio operators for their work

On the last weekend of June, local amateur radio operators – called “hams,” gathered at Camp Kidd in Parsons to participate in Field Day, which takes place each year on the last full weekend in June.

The weekend offers the public the chance to meet with and talk to members of the Mountain State Transmitters and learn about amateur radio. Amateur radio groups across the nation celebrate Field Day and the radio bands are full of hams contacting other hams across the United States, teaching about different modes of radio operations and showing their emergency capabilities.

Tucker County Commission President Lowell Moore visited with the group during this year’s Field Day. He said feels lots of people do not know the quality of the group or the reason for Field Day....
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Radio reaches blocked countries

Posted on Thursday July 13, 2017, 11:15 am by Amateur Radio Newsline

International radio remains the most reliable, robust source of information for people in some nations

North Korea is rated as the second most censored county in the world after Eritrea, according to the Committee to Protect Journalists.
North Koreans who are caught accessing information not approved and disseminated by the government can be sent to brutal prison camps for extended terms, or face execution.

Yet such is the human hunger for reliable outside information, that many North Koreans brave these risks by tuning into international radio and cross-border TV broadcasts wherever practical.
Many also watch banned South Korean TV programs on black market DVDs, SD cards, and USB sticks; plus computers and mobile phones smuggled in from China. (South Korean movies and soap operas are hugely popular in the North, according to the New York Times.)

The conclusions they draw from this content are subsequently shared with other North Koreans by word-of-mouth; despite the fact that such sharers can get in serious trouble with the Kim Jong-Un regime....
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Ham radio operators grow in strength

Posted on Thursday July 13, 2017, 11:14 am by Amateur Radio Newsline

The Hindu reports an Amateur Radio Club has been inaugurated at the SRR and CVR Government Degree College

The number of people evincing interest in Ham radio (Amateur Radio) is on the rise across the State of Andhra Pradesh.

The idea of using radio frequency spectrum for purposes of non-commercial exchange of messages, wireless experimentation, self-training, private recreation, radio sport and most importantly, emergency communication is catching up with a good number of people from various walks of life taking to this new passion.

A recent training session in Ham radio evoked good response from students, professors, lecturers and professionals from various other fields. A total of 73 candidates qualified in the Ham radio exam and most of them have received a licence to operate from the Wireless Planning and Coordination wing, Delhi.

Andhra Pradesh region already has an impressive number of Ham operators. The addition of new Hams would turn the State into a hub of HAM activities, said Arza Ramesh Babu (VU2RDM), coordinator, Ham Radio Training Centre....
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World Scout Moot

Posted on Thursday July 13, 2017, 11:13 am by Amateur Radio Newsline

Ivan, PV8IG, will be active as PV8IG/TF during the 15th World Scout Moot (July 25th to August 2nd) in Iceland.

Activity is planned to operate on the Scout frequencies (7090, 14190, and 21190 kHz SSB; 7050 and 14050 kHz CW).

The IRA (Iceland Radio Amateur Association) has given total support to obtain this license already issued.

QSL via PT7WA.

ADDED NOTE: Also, look for TF15MOOT to be active during the same time operating from the Scout Activity Centre at Úlfljótsvatn. QSL via:
Vala Hauksdottir, P.O.Box 28, 210 Gardabaer, Iceland.



Posted on Thursday July 13, 2017, 11:10 am by ARRL

The Amateur Radio Parity Act was introduced in the US Senate on July 12, marking another step forward for this landmark legislation. Senators Roger Wicker (R-MS) and Richard Blumenthal (D-CT) are the Senate sponsors. The measure will, for the first time, guarantee all radio amateurs living in deed-restricted communities governed by a homeowner’s association (HOA) or subject to any private land use regulations, the right to erect and maintain effective outdoor antennas at their homes. The Senate bill, S. 1534, is identical to H.R. 555, which passed the US House of Representatives in January.…/amateur-radio-parity-act-is-introduce…

WWV 25 MHz Signal Swapped to Circular Polarization, Reception Reports Invited

Posted on Wednesday July 12, 2017, 9:06 am by Amateur Radio Newsline

The resurrected 25-MHz signal of time and frequency standard station WWV is now emanating from a circularly polarized turnstile antenna. WWV had used a vertically polarized antenna on 25 MHz in the 1970s. Silent since 1977, the 25-MHz signal returned to the air on an “experimental basis” in April 2014, and it’s been transmitting ever since — initially on a broadband discone until August 2015, when it switched back to a vertical, which it used until the July 7 switch to circular polarization.

“[W]e are broadcasting with 2 kW from a circularly polarized turnstile antenna,” WWV lead electrical engineer Matt Deutch, N0RGT, told ARRL this week. “It is just your standard plain-vanilla turnstile — two horizontal orthogonal dipoles with a quarter-wave phase-shifting coax linking them.”...
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Ofcom to auction former amateur radio spectrum

Posted on Wednesday July 12, 2017, 9:04 am by Amateur Radio Newsline

Ofcom has announced how valuable airwaves will be released to meet the growing demand for mobile broadband, including new measures to safeguard competition.

Ofcom is helping to meet growing demand for mobile data by releasing extra spectrum, allowing mobile operators to increase their networks’ capacity.

Later this year we will auction licences to use 190 MHz of spectrum in two ‘frequency bands’ – 2.3 GHz and 3.4 GHz – increasing the airwaves available for mobile devices by almost one third.

The auction rules set out today are designed to reflect recent market developments and safeguard competition over the coming years.

The rules include competition safeguards. When auctioning the spectrum, Ofcom will impose two different restrictions on bidders. These will limit the amount of spectrum operators can win in the 2.3 GHz band; and place overall limits on the spectrum an operator can win across the 2.3 GHz and 3.4 GHz bands in aggregate....
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Post-truth and alternative facts of IARU

Posted on Tuesday July 11, 2017, 9:08 am by Amateur Radio Newsline

The reaction of Don Beattie, G3BJ, president of IARU Region 1, to the recent statement of EURAO is full of mistakes, half truths and missing facts. So the 'context' he offers in his post is biased and incomplete. Let's surface the hidden side.

To begin with, a "little error" is on the date of his first letter. To be precise, the letter itself (a pdf) has no date at all, but the email where it was attached was sent on November 5, 2015. Not in August.

What happened in August? EURAO signed a Letter of Under­standing with CEPT/ECC.

What had happened before? IARU tried to block EURAO's participation in CEPT. This real fact is reflected on the CEPT minutes.

In between, certainly Don Beattie and Timothy S. Ellam, VE6SH, IARU's president, visited our booth at HAM RADIO 2015 exhibition in Friedrichshafen for a chat and to know more about EURAO. This was at the end of June and the meeting lasted about twenty minutes....
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Strange Signals and Mysterious Oscillations

Posted on Tuesday July 11, 2017, 9:08 am by Amateur Radio Newsline

The IARU-R1 Monitoring System newsletter reports mysterious oscillations on 28000 kHz and strange signals from Central Africa

The International Amateur Radio Union Monitoring System (IARUMS) Region 1 June 2017 newsletter can be read at

Reports of Amateur Band intruders can be logged on the IARU Region 1 Monitoring System Logger at

Monitor the short wave bands on-line with a web based SDR receiver at

IARU Monitoring System (IARUMS)
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State of emergency in British Columbia

Posted on Sunday July 9, 2017, 8:15 pm by Amateur Radio Newsline

Radio Amateurs of Canada (RAC) has reported it is monitoring the situation after the British Columbia government declared a Provincial State of Emergency

Todd Stone, Minister of Transportation and Infrastructure and Minister responsible for Emergency Management BC, announced a provincial state of emergency on Friday night (July 7) to ensure a coordinated response to the current wildfire situation and to ensure public safety.

Today alone there have been 56 new wildfire starts throughout the province. Evacuation alerts and orders have been issued for Ashcroft, Cache Creek and Princeton. These are in addition to the evacuation orders and alerts issued yesterday for 105 Mile House and 108 Mile House. The extended weather forecast is calling for continued hot, dry weather, with risks of thunderstorms in many parts of the province.

Given the current wildfire situation and the expected increase in wildfire activity, the Province is taking this extraordinary measure of declaring a provincial state of emergency....
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DX News from the ARRL

Posted on Friday July 7, 2017, 7:45 am by Amateur Radio Newsline

This week's bulletin was made possible with information provided by QRZ DX, the OPDX Bulletin, 425 DX News, The Daily DX, DXNL, Contest Corral from QST and the ARRL Contest Calendar and WA7BNM web sites.
Thanks to all.

CHINA, BY. Members of the Chinese Radio Amateurs Club (CRAC) and the Amateur Radio Branch of Xi'an Radio are going to team up as B9HQ for the IARU HF World Championship. They will be QRV on 160 to 10 meters using CW and SSB. QSL via BA4EG.

SPAIN, EA. The EA Digital Federation (FEDI-EA) celebrates its 25th anniversary during July with the call AM25FEDIA. Spanish stations may substitute their prefix as follows: AM for EA, AN for EB, AO for EC, together with the additional numerals 25. QSL for AM25FEDIA only via EuroBureauQSL.

FRANCE, F. TM007TF will operate from July 8 to 22 in the context of the Tour de France. Likewise, TM39TDF is QRV until July 10 and then again from July 16 to 23. QSL for TM39TDF via F8GGZ.

HUNGARY, HA. Members of the radio club FMV (HA5FMV and HG7F) celebrate their club's 60th anniversary until June 30, 2018 with the call HA60FMV. QSL via bureau....
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Statement on the authorisation of commercial multi user gateways

Posted on Friday July 7, 2017, 7:44 am by Amateur Radio Newsline

Ofcom has today published a statement setting out its decision to authorise the use of commercial multi-user ‘gateway’ devices, known as COMUGs, via licence exemption under the Wireless Telegraphy Act 2006.

A gateway device uses SIM cards created and issued by a mobile network operator (MNO). This allows the device to originate calls or data on the MNO’s network.

Calls made using these devices from fixed lines to mobiles are treated by the recipient’s network as if they were made by a mobile phone, rather than made from the fixed line phone....
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New Swedish Radio Amateurs

Posted on Friday July 7, 2017, 7:43 am by Amateur Radio Newsline

The Swedish national society SSA reports Sweden gained 64 new radio amateurs in the first six months of 2017

Sweden has a population of 10 million, just under 1/6 that of the UK.

The SSA website says:

During June, a large number of exams were conducted around Sweden. The result was 34 new radio amateurs bringing the total for the first six months of 2017 to 64.

After approved test. 61 of these are now members of the SSA.

We welcome you all to our amazing hobby!

A big thank you to teachers, trial judges, bisitters and everyone else
Members contributing to this necessary recruitment.

Pleasant summer!
SM6CNN, Chairman Anders

SSA in Google English


FCC Crackdown on Pirate Broadcasters Targets at Least One More Amateur Licensee

Posted on Friday July 7, 2017, 7:43 am by Amateur Radio Newsline

A recent flurry of FCC Enforcement Bureau correspondence to alleged unlicensed broadcasters has targeted at least one more radio amateur — this time in the Greater New York City area. It’s not the first time Winston A. Tulloch, KC2ALN, of Paterson, New Jersey, has heard from the FCC, which has had Tulloch in its sights for at least several months regarding a pirate FM station on 90.9 MHz. Last November, the Enforcement Bureau sent Tulloch a Notice of Unlicensed Operationafter receiving information that he was operating a radio station. FCC agents used direction-finding techniques to zero in on a signal on 90.9 MHz coming from his residence.

“The field strength of the signal on frequency 90.9 MHz was measured at 105,451 microvolts per meter (µV/m) at 101 meters, which exceeded the maximum permitted level of 250 µV/m at 3 meters for non-licensed devices,” the FCC said at the time....
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How to Copy CW in Your Head

Posted on Wednesday June 28, 2017, 5:33 pm by KB6NU

By Dan Romanchik, KB6NU

The second most common question that I get about CW is, “How do I learn to copy in my head?” When I get this question, I give, what to some, is a very unsatisfying answer. One day, I just went cold turkey. I put down the pencil and paper and never copied letter-by-letter ever again.

Carlo Consoli, IK0YGJ, author of Zen and the Art of Radiotelegraphy (, says that what operators need to do is to program themselves to copy in their heads. He counsels operators to practice relaxation and visualization exercises. Visualize yourself as a high-speed operator, and maybe one day you will be one.

This approach seems to have worked for Consoli. He is a member of the Very High Speed Club (VHSC), First Class Operator’s Club (FOC), and has been clocked at copying over 70 wpm. I'm not sure that this is really going to work for everyone, though. ...
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DXpedition preparations

Posted on Wednesday June 28, 2017, 9:20 am by Amateur Radio Newsline

As a preparation for future DXpeditions, Johannes PA5X (also C91PA) and Gerben PG5M will be testing their two-station setup when operating LX/home call from July 6-9.
Operation on 10-160 meters with CW, SSB and JT65.
Lots of equipment has been selected which need to be tested in real conditions. A set of BPF's have been constructed for 9 bands, a pentaplexer will be used in combination with a 5-band Hexbeam and vertical antennas for 30-40-80-(160) meters will be made by using fiber poles of 12, 15 and 18 meters.
Radios are IC-7300 and K3 with an ACOM and SPE 1.3K (if delivered in time) amplifier. A certain amount of station automation will also be set up and tested.
We are looking forward to work you. QSL via the respective home calls.
Further QSL information and online log checking can be found on
Gerben - PG5M

Brandmeister – DMR Radio

Posted on Wednesday June 28, 2017, 9:19 am by Amateur Radio Newsline

For the last two months, a Brandmeister Master server based in Ireland has been on test. This week it has been made public.
Brandmeister is a decentralised network of master servers for digital DMR networks and appears to be the most popular system operating at present.
For more information on Brandmeister, look at, for discussions on DMR in Ireland contact your local digital repeater keeper.
You can ask a question on the Brandmeister Ireland Facebook Group, or contact John, EI7IG /at/ QTHR who is monitoring the Ireland Calling talkgroup 2722 (accessible on reflector 4780 on brandmeister) most evenings.
Source: IRTS

New Codec2 Digital Voice Mode

Posted on Wednesday June 28, 2017, 9:17 am by Amateur Radio Newsline

David Rowe VK5DGR creator of Codec2 for narrowband amateur radio HF Digital Voice is developing a 'wideband' variant
On his blog he writes:
I ran some numbers on the new OFDM modem and LDPC codes, and turns out we can get 3000 bit/s of codec data through a 2000 Hz channel at down to 7dB SNR.
So – what can I do with 3000 bit/s and a new Codec 2 mode? I decided to try wideband(-ish) audio – the sort of audio bandwidth you get from Skype or AM broadcast radio. So I spent a few weeks modifying Codec 2 to work at 16 kHz sample rate, and Jean Marc gave me a few tips on using DCTs to code the bits.
Read the full post and listen to the audio samples at
David Rowe VK5DGR