Category Archives: Ham Radio

Radio Waves: Dave Moves, IC-705 delay, High Speed Telegraphy Meet, and WWI Biplane Wireless

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Radio Waves:  Stories Making Waves in the World of Radio

Because I keep my ear to the waves, as well as receive many tips from others who do the same, I find myself privy to radio-related stories that might interest SWLing Post readers.  To that end: Welcome to the SWLing Post’s Radio Waves, a collection of links to interesting stories making waves in the world of radio. Enjoy!

Many thanks to SWLing Post contributors Dave Zantow (N9EWO), Paul Evans (W4/VP9KF), and Mike Hangen (K8RAT) for the following tips:

Dave’s Radio Receiver Page Moves Again (N9EWO)

With all of the strange happenings and excessive “Pop-Up” issues on Angelfire (even more so of late), we have finally decided to move off of that web host and made the move to QSL.NET.

So “Dave’s Radio Receiver Page” new URL is :

https://www.qsl.net/n9ewo/

Please, for anyone who have web pages that have my web page linked (with the now old URL), I would appreciate the correction. Hopefully this will be the last time I will need to move the page.[…]

Please Note : Are still a few pages that still need to be transferred, but I expect to have that completed over the weekend. This has been quite a bit of work recoding all (again).

Icom IC-705 availability delayed due to Coronavirus

Paul Evans notes that Martin Lynch and Sons  (ML&S) has just updated the product page for the IC-705 with the following note: “RRP £1199.95 incl 20% VAT. Estimated delivery now July 2020 due to major component shortage.”

Icom America retailers (Universal Radio, Ham Radio Outlet, Gigaparts, etc.) have not published an estimate for availability.

QRQPoint – The meeting place for high speed telegraphy enthusiasts in Europe (Southgate ARC)

Dear OM and all CW lovers,
I will you proudly inform, that our website http://www.qrqpoint.com is now online.

The idea of this meeting place for CW enthusiasts was born by me and the webmaster, Fabian, DJ1YFK, brought it very nice to the web. Thank you Fabian!

Everybody is very kindly invited to be there QRV.

The frequency is 3567 khz. To make a sked or just to say Hello we have a little Shoutbox on the site.

I hope to see you there!

Kindest regards,

Olaf, DL1OP

In World War I, British Biplanes Had Wireless Phones in the Cockpit (IEEE Spectrum)

Pilots on reconnaissance missions could immediately call in their findings

As soon as the first humans went up in hot air balloons in the late 1700s, military strategists saw the tantalizing possibilities of aerial reconnaissance. Imagine being able to spot enemy movements and artillery from on high—even better if you could instantly communicate those findings to colleagues on the ground. But the technology of the day didn’t offer an elegant way to do that.

By the early 20th century, all of the necessary elements were in place to finally make aerial reconnaissance a reality: the telegraph, the telephone, and the airplane. The challenge was bringing them together. Wireless enthusiasts faced reluctant government bureaucrats, who were parsimonious in funding an unproven technology.

[…]One early attempt involved wireless telegraphy—sending telegraph signals by radio. Its main drawback was size. The battery pack and transmitter weighed up to 45 kilograms and took up an entire seat on a plane, sometimes overflowing into the pilot’s area. The wire antenna trailed behind the plane and had to be reeled in before landing. There was no room for a dedicated radio operator, and so the pilot would have to do everything: observe the enemy, consult the map, and tap out coordinates in Morse code, all while flying the plane under enemy fire.

Despite the complicated setup, some pioneers managed to make it work.[…]

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DUST “Voskhod”: A Sci-Fi short that features ham radio

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Many thanks to SWLing Post contributor, Scott Gamble, who shares the following science fiction short film called “Voskhod” by DUST.

The synopsis:

After repairing his HAM radio using parts found in the forest, a recluse radio operator receives a distress call from a stranded Soviet cosmonaut in orbit.

I thoroughly enjoyed this short film. We radio enthusiasts will certainly notice some inaccuracies on the radio side of things–feel free to comment on those–but I suggest you exercise a willing suspension of disbelief and truly enjoy this piece!

Click here to view on YouTube.

Can you identify the National radio model? Please comment!

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Radio Waves: Crossband Test Postponed, VI3RA Event Videos, WWII Radio, and Look Inside a Panasonic RF-4900

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Radio Waves:  Stories Making Waves in the World of Radio

Because I keep my ear to the waves, as well as receive many tips from others who do the same, I find myself privy to radio-related stories that might interest SWLing Post readers.  To that end: Welcome to the SWLing Post’s Radio Waves, a collection of links to interesting stories making waves in the world of radio. Enjoy!

Many thanks to SWLing Post contributors Harald Kuhl, Michael Bird, and Carel Kuijer for the following tips:

Annual Armed Forces Day Crossband Test Postponed (ARRL News)

Due to the ongoing COVID-19 response and mitigation actions, the 2020 Armed Forces Day (AFD) Crossband Test scheduled for Saturday, May 9, has been postponed. Because it’s uncertain just when stay-at-home orders will be lifted across the US, AFD planners chose to postpone this year’s event, because the government stations that typically support this event may not be available. Armed Forces Day Crossband Test planners are considering scheduling a November event in honor of Veteran’s Day, depending on COVID-19 mitigation actions. During the AFD Crossband Test, military stations in various locations transmit on selected military frequencies and announce the specific ham frequencies they are monitoring to work radio amateurs. — Thanks to US Army MARS Program Chief Paul English, WD8DBY

Radio Australia Event – Antenna Overview (Mount Evelyn DX Report)

Thanks to Lee VK3GK for this short video of the antennas used for the recent Radio Australia event using the call sign VI3RA. Take what will possibly be a final look at the feeders, switching boxes and antennas before they are pulled down and junked!

Also here is the final transmission of the event weekend with, of course, the famous Radio Australia music box interval signal.

Click here to view both videos at the Mt Evelyn DX Report.

World War II and Radio (All Things Radio)

I have added an article I wrote some years back on the code breaking efforts of the Allies during WWII. While certainly not exhaustive, I found many of the connections between countries and equipment rather fascinating, and new things continue to pop up regarding Bletchley Park’s role in training officers and decoding texts. While most famously known for breaking the Enigma code, also significant was the breaking of the Lorenz Cipher.

Click Here to download the article in PDF format.

73, Robert K4PKM

Look Inside This Radio Receiver! The Collectible Panasonic RF 4900 (Mr. Carlson’s Lab – YouTube)

Let’s look inside this Panasonic RF-4900 radio receiver, and see what we have to restore.

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Amateur Radio Association of Nebraska 3D print face shields for healthcare workers

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Many thanks to the Southgate ARC for sharing this brilliant story.  Kudos to the Amateur Radio Association of Nebraska for their ingenuity in time of need:

KSNB TV News reports on an Amateur Radio group that is pitching in to make face shields for healthcare workers

The news story says:

With a national shortage of personal protective equipment for healthcare workers, people are doing what they can to fulfill the orders. When they heard of the need, some members of the Amateur Radio Association of Nebraska looked at each other and found a way they could help. Now with people outside of the group helping, too, they are using 3D printers to create face shields.

Their 3D printers have been running all day for over a week now. Volunteers across the Tri-Cities are quickly making face shields for hospitals and clinics who need to serve the public. The shield is a simple frame design with a plastic cover. The cover can be quickly changed out or reused.

“Material-wise we have pennies on the dollar for these things so we want to make sure our healthcare workers and everybody involved in the field are safe and so we’re doing what we can to help,” Amateur Radio Assoc. President Allen Harpham WD0DXD said.

The frames are printed, but the shield part is actually recycled overhead projector sheets from schools. They have gotten thousands of sheets donated to them from schools in central Nebraska who have no other use for them anymore.

Amateur radio fans also often have their hands in other kinds of tech.
So that’s why the idea came so easy to them.

“To be able to put that knowledge to use to help out is just great,” Harpham said. “I can’t say enough about that and it’s kind of the way for the amateur radio people that’s the way we’ve always been.”

Watch the TV News report at
https://www.ksnblocal4.com/content/news/Amateur-radio-group-pitches-in-to-make-face-shields-for-healthcare-workers-569367411.html

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Radio Waves: New FCC RF Exposure Limits, Rediscovering Spark Gap, Zoom Vulnerabilities, and Extremely Rare Film of MI6 Section VIII

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Radio Waves:  Stories Making Waves in the World of Radio

Because I keep my ear to the waves, as well as receive many tips from others who do the same, I find myself privy to radio-related stories that might interest SWLing Post readers.  To that end: Welcome to the SWLing Post’s Radio Waves, a collection of links to interesting stories making waves in the world of radio. Enjoy!

Many thanks to SWLing Post contributors Paul Evans, and Robert Gulley for the following tips:

FCC Publishes new RF exposure rules (Federal Register)

The FCC has published the new rules in the Federal Register.

Paul notes:

Different above 6GHz
Expanding rules from 3 kHz – 300 GHz to 3 kHz – 3 THz (inc. light
frequency RF sources, essentially future proofing rules)
Introducing SAR measurements from 100 kHz to 6 GHz (impact to ARS)
Introducing MPE measurements above 6 GHz
Introducing ideas for WPT at and below 100 kHz, with control over the
wires or remotely over the air. This is (obviously) for EV charging.
They say nothing about harmonics, filtering, etc.[…]

We Rediscover Spark Gap Radio by Accident (CuriousMarc via YouTube)

It’s 1890 all over again in the lab. By complete accident, I find myself the new owner of a high voltage box that turns out to be a vintage Xenon lamp sparker. Not only do we make it work, but we use it to retrace the critical experiments that led to the discovery of radio, using the lamp starter as the spark gap transmitter, and a coherer as the receiver.[..]

Click here to view on YouTube.

Zoom taking your club online – DON’T (Southgate ARC)

On Friday 3rd April, we carried an item regarding the use of Zoom for club meetings.

However, we have since been contacted by Paul, VP9KF, who offers this note of caution.

He says:
“This story http://www.southgatearc.org/news/2020/april/zoom-taking-your-radio-club-online.htm on your page recently is over-shadowed by the news as follows:

https://www.theguardian.com/technology/2020/apr/02/zoom-technology-security-coronavirus-video-conferencing

Don’t use Zoom and get hacked ”

Our thanks to Paul for this informative, if not rather worrying, news item.

[Paul notes that Skype Conference Call is the best method because it is “secure, end to end. In browser (sandbox) with HTML5 embedded features.”]

WW2 Codebreakers: Bletchley Park activities revealed in unique footage – The Hidden Film (YouTube)

Discover the story behind the recently discovered only known wartime film footage of a secret site connected to Bletchley Park.

A silent film, recently donated to Bletchley Park Trust, is believed to be a compilation of footage recorded between 1939 – 1945, showing members of MI6 Section VIII at Whaddon Hall, Buckinghamshire. During World War Two, this was a most secret site where Ultra intelligence produced by the Government Code and Cypher School (GC&CS) at Bletchley Park would be sent, and then passed on to Allied commanders in the field.

In this mini-documentary, hear Bletchley Park Veteran, Geoffery Pidgeon who worked in MI6 Section VIII during WW2, recall how it felt to watch the film for the first time and recognise his father. Peronel Craddock, Bletchley Park’s Head of Collections and Exhibitions and Dr. David Kenyon, Research Historian at Bletchley Park also talk about why the discovery of this film is so important.

Watch the original footage: https://youtu.be/bvVaFE5O3eY

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Icom IC-705 delivery has been delayed

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Many thanks to SWLing Post contributor, Paul Evans, who writes:

As you’d expect, Icom has formally delayed the delivery schedule of the IC-705.

Here’s the announcement from Icom Japan: https://www.icom.co.jp/news/4720/

The following is a machine translation of the announcement:

“Thank you very much for your patronage of ICOM products.

We have received reservations from a large number of customers about the IC-705, a 10W walkie-talkie with HF~430MHz all-mode, which was scheduled to be released in late March 2020. Some of the parts involved in the production of the product are delayed due to the new coronavirus issue, and production has been delayed due to this.

We apologize for any inconvenience caused to all of you who are looking forward to our products.

As for the delivery of the product, because it is a situation in which the arrival schedule of the part does not stand now, I will guide it separately as soon as it turns out.

We will take a while to deliver it, but we will do our best to deliver it as soon as possible, so please understand us.”

Thanks for sharing this, Paul. No doubt, delays are due to the affects of Covid-19 on both manufacturing in Japan and throughout the IC-705 supply chain.

For updates, bookmark the tag IC-705.

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Radio Waves: LPFMs Go Non-Directional, ABC Cuts Remain, WBCQ Videos, and Demolition of Hara Arena

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Hara Arena during the 2016 Dayton HamventionRadio Waves:  Stories Making Waves in the World of Radio

Because I keep my ear to the waves, as well as receive many tips from others who do the same, I find myself privy to radio-related stories that might interest SWLing Post readers.  To that end: Welcome to the SWLing Post’s Radio Waves, a collection of links to interesting stories making waves in the world of radio. Enjoy!

Many thanks to SWLing Post contributors Ulis (K3LU), Michael Bird, and Trevor Dailey for the following tips:

New FCC Rules Would Allow LPFMs To Use Non-Directional Antennas. (Inside Radio)

The FCC is scheduled to vote on controversial new rules that would potentially end a prohibition on low-power FM stations using directional antennas, among other things. At its April Open Commission Meeting, the agency will vote on a Report and Order to update its technical rules for LPFM stations.

Since the Local Community Radio Act of 2010 was passed nearly a decade ago, the number of LPFMs has grown to more than 2,100 stations. The LPFM service has “matured since engineering requirements were first established in 2000,” FCC Chair Ajit Pai said in a blog post announcing the April meeting agenda. “This maturation means that LPFM stations should be able to take advantage of additional engineering options to improve reception.”

In addition to improving reception, the proposed new rules would “increase flexibility while maintaining interference protection and the core LPFM goals of diversity and localism,” Pai said.

Along with expanded LPFM use of directional antennas, the proposal would allow LPFM stations to use FM booster stations.[…]

The ABC is an essential service but funding cuts remain, says boss (The Age)

The ABC could have to look at closing a channel if the government remains committed to the funding cuts announced in the 2018 federal budget, according to managing director David Anderson.

“We don’t think we can bridge the gap purely from efficiency alone,” said Mr Anderson on Thursday, as the broadcaster revealed a suite of programming that it hopes will help Australians through the next three months of social isolation.

“That’s where you start to look at what it is you’re providing on what service. At the moment we have no plans to turn off a channel or a network, but I have to say that in the foreseeable future turning off a channel will happen one day. It’s just not right now.”

The ABC is in the second year of its current triennial funding round, in which the government declined to index its base funding, effectively meaning its budget has been cut by $84 million over the three years to 30 June, 2022.[…]

Two WBCQ Videos

Trevor Dailey shares two videos produced by Peter Kroon and OfficialSWLchannel that focus on WBCQ and their free speech mission. Click here for the first video (18:30) and here for the second video (4:37).

Note that while all of the commentary in the first video is in Dutch, much of the content is in English.

Demolition of most of Hara Arena will start soon (Dayton Daily News)

Michael Heitz, the developer of the Hara Arena property, said Monday that sometime in the next two to three months, demolition of about two-thirds of the tornado-damaged property should begin.

Heitz said he is putting together a legal description of the recently rezoned former entertainment property, with an environmental report and surveys, for JobsOhio. He expects JobsOhio, the state’s private jobs creation arm, to put its marketing muscle behind the 130-acre site, to help him find a future user.

“This is one of their biggest tracts in the state of Ohio, under one piece of land,” Heitz said in an interview. […]

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