RAN Technology
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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: 08/23/2021
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New! Online International Morse generator website

Nothing to download, works in your browser Pretty cool, a website that you can enter text into that will play Morse through your browser without any downloading or software:https://morsecode.world/international/trainer/generator.htmlSpacing and other customizations are possible.   No excuses for not practicing your code now (says to self...)...  READ MORE
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Posted: 03/25/2021
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More hamfests return to WI-IL-IA in 2021

it's about time! Hamfests return in 2021 to Illinois, Iowa, and Wisconsin! The 2021 DeKalb (Sandwich) and Starved Rock hamfests were great successes!   This was the first time for Starved Rock Radio Club to hold the hamfest in Mendota IL which worked out great -  hope it helps the club rebuild what was once one of the best hamfests in the area..The South Milwaukee 'fest is special because i...  READ MORE
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Posted: 01/08/2021
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W9RAN wins MCRN 7th place

Midwest Classic Radio Net The Midwest Classic Radio Net has been conducted on 3885 kHz AM since 1987 as a salute to classic AM rigs and operation.    The net remains one of the most popular AM nets in the country and sometimes last for well over an hour.Harry N9CQX took over the net after long-time NCS WA9ZTY became a silent key and instituted record-keeping to know how many stations participated.  Befo...  READ MORE
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Posted: 09/21/2020
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The Old QSL Card site is back

who doesn't love old QSL cards? After the old Google+ site was shut down by Google, the amazing online collection of old QSL cards maintained by Bob Green, W8JYZ, has a new home - at his website.     Browse thousands of vintage QSL cardsIt doesn't take long to find a memorable name or callsign - maybe even someone you know!Please share your appreciation with W8JYZ at the link on the home page for providin...  READ MORE
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Posted: 09/12/2020
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Spartanburg Hamfest - sanity in the age of COVID-19

Intelligent risk-management by attendees Sanity!  Individual responsibility!From the BRARS webpage:Welcome to the Blue Ridge Amateur Radio Society (BRARS) HamfestBy purchasing a Hamfest ticket, You are acknowledging that an inherent risk of exposure to COVID-19 exists in any public place where people are present, “While attending the BRARS Hamfest you and any guests that you may bring voluntarily assume all risks related to ex...  READ MORE
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Posted: 09/11/2020
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Beaker Street returns to the air!

If you remember it, you were there! If you remember "Beaker Street" it's about the best news ever!   Otherwise this will seem like going to someone else's high school reunion...In the late 60s, for kids living in "flyover country" in most small towns in the midwest, there were not many local rock and roll radio stations that could be heard during the day.   But with sunset came the ski...  READ MORE
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Posted: 06/08/2020
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Hamfests Return!

A quick look at the Wauseon OH swap on June 6, 2020 Thanks to Rex WA6GYC for this short video of the Wauseon OH swapfest - one of the first to be held in what is otherwise "the summer without hamfests".   Bryan KB8ELG, club president and promoter, put an AN/GRC-9 field radio on the air, hand-crank power and all!   Full information can be found at the club's website  http://k8bxq.org/hamfestAccording to Rex,&nb...  READ MORE
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Posted: 02/24/2020
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Soviet Spy Radio found in forest

(oh yeah, I put that there...I'll take it now thanks!) COLOGNE, GERMANY—According to a Live Science report, archaeologist Erich Classen of the Rhineland Regional Association and his colleagues were looking for a Roman villa in western Germany when they unearthed a Soviet spy radio that had been sealed in a metal box and hidden along a path through what was the Hambach Forest, just a few miles away from a nuclear research center and military air ...  READ MORE
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Posted: 02/11/2020
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Announcing the W9DYV Radio Society

honoring SSB pioneer Wes Schum W9DYV Nick Tusa, K5EF,  longtime friend of Wes Schum and organizer of the W9DYV-Central Electronics Technical Symposium for a number of years, has announced that the W9DYV callsign will again be active, as the club callsign of the W9DYV Radio Societ NFP. Congratulations to Nick and friends for memorializing Wes Schum's contributions to amateur radio in this way!...  READ MORE

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Posted: 11/05/2021
Category: Vintage Radio
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The Multi-Elmac SEA-RAD MM-50

Marine radio from the early 1960s   Among it's early products, the Multi Elmac Company of Oak Park MI made marine band radios and other products for boats, including the Sea-Deep DM-1 depth indicator, the Sea-Fume SF-1 vapor detector, and the BC-1 Duo-Charger for 6 and 12 volt batteries.   Thus it's not surprising that the marine radio-telephone would be given a "sea" name:   the Sea...  READ MORE
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Posted: 11/01/2021
Category: Vintage Ham Radio
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The Sonar MR-3 mobile receiver

a literal "handful" of radio! The Sonar Radio Corp.  of Brooklyn NY is a well-known manufacturer of Ham, CB, and Marine Band radios over a period of several decades, and it's products were always well engineered and of good quality.    But despite several attempts, it's ham radio products never really managed to excite hams enough to plunk down their hard-earned cash.   The SRT series of t...  READ MORE
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Posted: 09/28/2021
Category: Vintage Ham Radio
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The Multi-Elmac CD-10 Project

Detroit-area hams on 10 meters  In 1958, the Multi Elmac Company was riding high on the ham radio waves.   The company had seen an opportunity to provide feature rich but affordable transmitters and receivers to hams itching to "go mobile", which was all the craze.   Instead of sticking a converter in front of the car radio like many competitors did, Elmac produced full-blown receivers that tu...  READ MORE
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Posted: 07/15/2021
Category: Vintage Ham Radio
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Mystery Transmitter

where's the copper subchassis from?  I didn't set out to buy this homebrew CW transmitter, it was included in an auction lot that I wanted so I had to take it to get the desired item.   But even though I always like to see good quality homebrew gear, this one is just a mystery.Most of the transmitter, including 6CL6 oscillator and buffer stages and a 6146 PA are built on a sub-chassis that is clearly part of a com...  READ MORE
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Posted: 07/12/2021
Category: Vintage Ham Radio
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The Vector VR-50

last gasp from Swan/Atlas founder Herb Johnson  Most hams are aware that Herb Johnson W6QKI founded Swan in Benson Arizona to make single-band SSB transceivers and then moved his operation to Oceanside CA where Swan thrived throughout the 1960s.   Swan merged with Cubic Corporation in 1967, and Johnson managed Swan as its subsidiary until 1973. Johnson founded Atlas Radio in 1974, with the assistance of Southcom International fo...  READ MORE
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Posted: 06/18/2021
Category: Vintage Ham Radio
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Harvey Wells RG-9A / RCA MI-590237 Receiver

Speculation about a mystery receiver The Harvey-Wells Company was formed through a partnership between Clifford Harvey W1RF, and John Wells W1ZD in 1939.   Cliff Harvey had earlier founded Harvey Radio Labs in 1933, and prior to that, he was associated with the Hendricks and Harvey Company, another partnership. Producing police radios, transceivers, transmitters, and crystals. Their most popular product was the TBS-50 trans...  READ MORE
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Posted: 06/13/2021
Category: Technical
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RANVerter Pi - SDR Upconverter

introducing hams to SDR  I became aware of a few hams playing with a thing designed to receive digital TV in Europe on your laptop - a little plug-in dongle that used an RTL-2832 IC and sold for $20 or so.    Some clever fellows had determined that it could be put into "radio mode" in which it would generate an IQ stream over USB, and by writing to control registers in the tuner IC, it could...  READ MORE
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Posted: 06/07/2021
Category: Vintage Ham Radio
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Hallicrafters AT-10 Antenna Tuner

One even Dachis doesn't know about!  A while back I acquired a six channel HF transceiver made by the Radio Industries division of Hallicrafters, probably in the 1960s, called an SBT-20.    It is capable of 20 watts SSB or 5 watts AM (or CW with an optional board) in the range of 2-12 MHz and thus was probably aimed at commercial and light-duty military applications.   The radio could by ordered with fu...  READ MORE
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Posted: 05/29/2021
Category: Vintage Ham Radio
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The Clegg Interceptor receiver and Allbander converter

It's not just for VHF!  I'm always thinking about interesting combinations of equipment to try out on the air.   One day while rearranging the shack I was getting ready to connect my Globe Scout Deluxe back up with a Collins 51S-1 receiver when the LED (the energy-efficient version of the old light bulb) came on.When I first started playing with DVB-T dongles back in 2012 I wanted an upconverter so I ...  READ MORE
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Posted: 05/21/2021
Category: Vintage Ham Radio
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6AG7-6LG Novice Transmitter

Classic circuit with some modern twists  There's a good chance that more homebrew ham transmitters have been built using a 6L6 than any other tube, and when combined with the superior performance of the 6AG7 oscillator, it's a hard combination to beat (click here for an explanation of the 6AG7's benefits)I'll be adding more info about this project soon, but one of my goals was to reproduce what was a budget-friendly...  READ MORE