RAN Technology
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Posted: 06/08/2022
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WANTED: Bendix 3206

Power Supply/Mod/IF unit This is an odd and unusual piece of gear,  it's got IF cans one one end and a dynamotor on the other!   It's the back half of the receiver plus power supply and modulator for the Bendix 3801 HF system that was used on aircraft before the switch to VHF.    The functions were split between the two units to save panel space.    Click the image to e...  READ MORE
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Posted: 03/29/2022
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New droplet-based electricity generator

A drop of water lights up 100 small LED bulbs A team of engineers has figured out how to take a single drop of rain and use it to generate a powerful flash of electricity. The City University of Hong Kong researchers behind the device, which they're calling a droplet-based electricity generator (DEG), say that a single rain droplet can briefly generate 140 volts. Their findings were published in the latest issue of the highly prestigious ...  READ MORE
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Posted: 03/24/2022
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Russian soldiers uses Chinese portable radios

Baofung UV-82HP - unencrypted The Russian military has used civilian mobile phones and radios for their communications, including Chinese-made civilian handheld radio, during the ongoing Kremlin’s invasion of Ukraine.According to  Defence-Blog.com, the Russian military is using the BaoFeng UV-82HP radios for communication within the frontline units currently stationed in Ukraine.The Ukrainian military manages to sei...  READ MORE
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Posted: 02/24/2022
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Amateur radio transmittting suspended in Ukraine

part of a 30 day emergency order Full information hereSee Feb. 27 update HERE.Some webSDRs now blocking the spectrum around UVB-76 to prevent monitoring of it. ...  READ MORE
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Posted: 02/04/2022
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Local IL Ham featured in newspaper article

W9JC, Freeport IL A former Honeywell work colleague and local ham friend was recently featured in a front-page story in the Freeport Journal StandardJohn does a nice job of explaining the relevance of Ham Radio in the 21st century:“Think about that little cell phone you carry around which is only a radio,” he said. “That all happened in the last 100 years. That’s one lifespan for many people...  READ MORE
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Posted: 02/02/2022
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This 22-year-old builds chips in his parents’ garage

the crystal set of the 21st century? In August, chipmaker Intel evealed new details about its plan to build a “mega-fab” on US soil, a $100 billion factory where 10,000 workers will make a new generation of powerful processors studded with billions of transistors. The same month, 22-year-old Sam Zeloof announced his own semiconductor milestone. It was achieved alone in his family’s New Jersey garage, about 30 miles ...  READ MORE
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Posted: 12/18/2021
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The Seasons Best Wishes

de KPH Yes, a holiday greeting card from the original KPH, Port Reyes CA.    I don't have an exact date but I would guess late 50s or early 60s because it came from the estate of Roger Kaney (SK) who was W9AF when I knew him, but had been W9ZRU previously.  Roger was a retired marine radio operator when I met him in the late 80s, and even then would "stand watch" at nigh...  READ MORE
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Posted: 12/14/2021
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Larry Sabella KA9BQR, SK

known for his trademark hat, a good guy Lawrence “Larry” Joseph Sabella, 84 passed away Tuesday, November 16, 2021 at Serenity Hospice and Home in Oregon, IL. Larry was born on April 26, 1937 to Daniel A. and Jean M. (Konieczka) Sabella in Chicago, IL. In 1961, he married the love of his life, Barbara N. Wise in Maywood, IL. Larry proudly served his county for 5 ½ years as a sergeant in the United States Army and Army...  READ MORE
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Posted: 12/06/2021
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May all your Christmases glow in the dark!

wishing you a very Mecky Christmas!  A dark shot of the John Meck T-60 transmitter provides a warm glow for 2021's Christmas greetings!CLICK IMAGE TO ENLARGE...  READ MORE
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Posted: 10/30/2021
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Wes Schum, Amateur Radio's Unsung Hero

new book released, available on Amazon My friend Nick Tusa K5EF has just released his book on the life of Central Electronics founder and ham radio pioneer, Wes Schum W9DYV.   Wes was not only an innovator but a crack salesman and promoter of single sideband in the early days and his transmitters and other products did more to popularize this new mode of operation than anything else.   It wasn't until after Art ...  READ MORE

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Posted: 07/02/2022
Category: Vintage Ham Radio
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The Pioneer 530

made by JAARS for Wycliffe Bible Translators In 1917 a missionary named William Cameron Townsend went to Guatemala to sell Spanish Bibles. But he was shocked when many people couldn’t understand the books. They spoke Cakchiquel, a language without a Bible.   He believed everyone should understand the Bible, so he started a linguistics school (the Summer Institute of Linguistics, known today as SIL) that trained people to do Bible ...  READ MORE
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Posted: 05/09/2022
Category: Historic
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The Elgin National Watch Company Time Broadcasts

the story of W9XAM  Visitors to the Elgin National Historic area along the Fox River in Elgin Illinois may not realize they are at the site of a famous shortwave radio station - W9XAM - the time signal station operated by the Elgin Watch Company.Elgin was the only watch company maintaining an observatory that observed, recorded and broadcasted time from the stars correct to the hundredths of a second. Located a...  READ MORE
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Posted: 04/15/2022
Category: Vintage Ham Radio
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The Mosley Commando II

Made in England and scarce even there The Mosley CM-1 receiver is quite well known and not especially hard to find in the US even though it was the only radio produced by the company that has been well-known for antennas since 1939.   Or is it...?A full-page ad (advert for you on the other side of the pond) appeared in the RSGB Bulletin in 1963 for a nice looking and very capable SSB transmitter called the "Commando II&...  READ MORE
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Posted: 03/30/2022
Category: Technical
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DIY DEG - Homemade Droplet Energy Generator works!

Producing electricity from flowing water I'm not ready to publish a description of exactly HOW it works, but 20 minutes effort with scissors and tape produced a prototype  Droplet Energy Generator that allows me to say for sure that IT WORKS!I duplicated the design shown in this video.   I wrapped a scrap of plastic in aluminum foil, then applied a strip of double-sided tape and to that attached a piece of PTFE thread-...  READ MORE
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Posted: 03/21/2022
Category: Historic
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Robert and Richard Santin - true ham heroes

KØVTD and KØULQ (SK) When I was first licensed in the 1960s in Nebraska, two groups of hams were commonly heard on the air before those with jobs got off work - other teens like me and the disabled hams.   Some of my earliest Novice ham buddies were blind students at the Nebraska School for the Blind in Nebraska City, and there were many other visually-impaired hams, all of whom were exceptional operators, e...  READ MORE
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Posted: 03/19/2022
Category: Technical
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Ceramic Loading Capacitor Replacement

32V series, Vikings, etc Old style mica capacitors were used in the pi-net matching sections of several vintage transmitters and the combination of age, heat, and high RF currents have made them likely failure items.   My Collins 32V-2 transmitter was to the point where it would not properly load to full power on 75 meters so something had to be done.   Mica capacitors are no longer made but fortunately new...  READ MORE
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Posted: 03/17/2022
Category: Technical
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Universal Frequency Converter

Modify as needed I found myself wanting to convert various frequencies to other frequencies and wanted a cheap and easy solution, so I designed a simple "universal converter" using the NE-602 and a programmable oscillator from Epson.  I'd used the same combination in hundreds of "RANVerter" SDR Upconverter projects since my Dec. 2013 QST article and knew that while there were limitatio...  READ MORE
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Posted: 03/09/2022
Category: Technical
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Magnetic PCB holder

It's always a challenge to hold PC boards during assemly and testing.  After purchasing a magnetic holder from Amazon  I realized I wanted more and could easily make as many as I wanted using inexpensive 3 mm hardware from eBay and some strong "fridge magnets".     All that's needed is to epoxy a standoff to the magnet - both tapped and threaded ...  READ MORE
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Posted: 03/09/2022
Category: Technical
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Si5351 Quadrature Mode

Arduino code example The Si5351 has been the biggest boon to homebrewers since the invention of the NE-602, especially now that quartz crystals are essentially obsolete.   But it's redundant to run the output of the 5351 through a johnson counter to develop the quadrature signals required for QSD/QSE SDR front-ends when there are three clock outputs available and the IC allows for phase offsets. &nb...  READ MORE
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Posted: 03/03/2022
Category: Technical
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Some tips on the Johnson Pacemaker

aka "Painmaker" It's pretty well accepted that the Pacemaker was not EF Johnson's finest effort.   In fact it was the first of several failed attempts by the King of the AM Transmitters to make the transition to SSB.    In the end, it was the rise of CB popularity that kept the company viable, along with its component business, while their ham business gradually faced away. &...  READ MORE