RAN Technology
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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: 08/26/2019
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WBBM-AM tower moves to Bloomington IL

watch the old tower fall (video link below)  The WBBM-AM radio tower has moved out of Itasca and found a new home in Bloomingdale.After 77 years, the over 680-foot WBBM-AM radio tower came down Thursday in Itasca. The property sold for development and WBBM Newsradio's new tower will now be located in Bloomingdale, at the same site as its sister station,WSCR (670 The Score), and will be diplexing off of their tow...  READ MORE
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Posted: 07/21/2019
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Apollo 11 and Collins Radio

“Every American voice transmitted from space was via Collins Radio Co. equipment” Those who may be interested in the technical details and the history of the space program leading up to Apollo should find plenty of interesting reading at this site:https://www.hq.nasa.gov/office/pao/History/SP-4204/contents.htmlUsed with permission.The Manned Space Flight Network antennas operated in the S-Band, on frequencies around 2.2 GHz. The system employed was known as the "Unified S-...  READ MORE
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Posted: 06/17/2019
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Google gets stung for swiping content thanks to embedded morse code

Dah-dit hits crash dot-dash cash-bash From The Inquirer:GOOGLE HAS FALLEN for a sting which is said to have proved the firm is 'stealing' data from a rival website.Genius.com, a site specialising in providing song lyrics, had suspected that Google had been scraping its site and using the lyrics to populate the 'information panels' often seen in the side of search results.This isn't that uncommon, but...  READ MORE
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Posted: 05/28/2019
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Hara Arena badly damaged in Dayton Tornado

Drone footage shows extensive damage The City of Trotwood OH is under an emergency declaration and the Hara Arena suffered extensive damage when tornadoes and severe storms moved through Monday night.   Drone footage shows the roof and side of the structure blown off in several places.WATCH...  READ MORE
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Posted: 04/05/2019
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Masa - AB9MQ - has the Coolest Rig in the World (this week)

Check out his newly restored Kenwood TS-511DN It doesn't belong to me, even!   Masa AB9MQ has recently acquired one of his "dream rigs" from Japan, a Kenwood TS-511DN, one of the predecessors to the famous TS-520.  Check out his nice work and (way too neat!) "Maximum Quality Laboratory"  in the Gallery....  READ MORE
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Posted: 03/26/2019
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MICROPHONIA! is here

Cool mics from my collection and ones I wish were I like microphones.   I have lots of them, and lust after more!   I'll be featuring cool microphonia in the Gallery from time to time, so check back often!...  READ MORE
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Posted: 03/23/2019
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The Coolest Rig in the World!

(this week...or until I say otherwise!)  Borrowing from Little Steven's Underground Garage on SiriusXM,  I will be featuring "The Coolest Rig in the World" on this very website!By what criteria?   MINE!    But rest assured, each featured rig WILL be cool...Check out the Gallery section for The Coolest Rig in the World (this week)!...  READ MORE

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Posted: 07/09/2020
Category: Vintage Ham Radio
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All Band Inexpensive 40 Watt Transmitter

a great "first homebrew xmtr" project  Jay Miller KK5IM recently wrote an article in Electric Radio magazine about fulfilling his dream of building a homebrew "AM Kilowatt" transmitter (375 watts output by today's standards).     His crystal-controlled exciter that drive the 813 was based on his Novice transmitter, which was built by his grand-uncle back in the 1960s when Novice class hams were l...  READ MORE
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Posted: 06/20/2020
Category: Technical
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Bias control of Class E amplfiers

Previously undocumented phenomenon Micro SDR innovator Guido PE1NNZ has implemented polar modulation using an Arduino MCU and a class E PA.   For more informartion on this fascinating project, join the discussion group at https://groups.io/g/ucxInitially, Guido's design implemented the polar or EER modulation scheme using modifications to the QCX CW transceiver hardware in the traditional way as described by Leonard K...  READ MORE
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Posted: 06/06/2020
Category: Vintage Ham Radio
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Lysco "Transmaster" Mobile Transmitter

a seldom-seen cutie from the golden age  I'm always intrigued by the odd and unusual ham gear that I remember seeing in catalogs as a kid but have seldom seen after hundreds of hamfests and uncountable for sale listings.   One such is the Lysco mobile transmitter which was produced by the Lysco Manufacturing Company of 1401 Clinton St. Hoboken NJ between 1949 and 1953.   Despite being a very cute and co...  READ MORE
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Posted: 06/06/2020
Category: Technical
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Class E Notes

the result of experiments with high efficiency class E amplifiers  There is a lot of misunderstanding about how a Class E amplifier works.    Including my own ;-)   As the result of studying the literature and experimenting, I thought I'd share what I have learned.Below is an example of a test amplifier I used to optimize my 2 watt wspr transmitter boards.   It can be visualized as two circuits - the amplifier itself a...  READ MORE
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Posted: 06/04/2020
Category: Vintage Radio
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Postcard or Letter Radio

from the Boy's Fun Book Seeing this article on Hackaday about how a guy in China made a crystal set using the diode in a chip credit card for the detector reminded me of the Postcard Radio.  It was a project in the WWII-era "Boys Fun Book" that I had as a kid and although I remember it well I had no reason to build one because who would want to mail a radio to someone else?     I did ma...  READ MORE
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Posted: 05/14/2020
Category: Technical
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Communications Associates Inc. SSB-125 marine radiotelephone

A nice crystal-controlled SSB oddball radio What can I say, I like oddball radios!    There was already a different version of this CAI SSB-125 on my shelf but it had the remote control head, and this one was cheap, well under $100 including shipping, and I'm easily amused.   VIDEO DEMO HERECommunications Associates Inc. was a supplier of commercial, military, and marine radios based in Huntington Station, ...  READ MORE
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Posted: 04/28/2020
Category: Vintage Ham Radio
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My $18.50 homebrew boatanchor receiver

Made of command set parts! The HW-16 had to be pushed aside while waiting for parts, creating an opening just big enough for the homebrew receiver I got recently via eBay for $18.50 - plus 2X that to ship it here.   I like saving and restoring old homebrew gear just out of respect for the amount of time and effort our forefathers put into making things from scratch, and this receiver intrigued me, as the IF transf...  READ MORE
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Posted: 04/22/2020
Category: Historic
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Boatanchor Garge Door Opener

Multi Elmac's first products  The Multi Elmac Company of Hazel Park and later, Oak Park MI is best know amongst hams for it's great mobile transmitters and receivers which were probably the most popular rigs of their type and are still often used on AM today.   The Multi Elmac Net pays tribute to these little rigs by and typically a half-dozen or more are heard on the net weekly.But the company's origin...  READ MORE
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Posted: 04/14/2020
Category: Historic
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Wireless on a Train

a lesser-known radio "first" WHEN Frederick Wally stepped out of a little cubby-hole in one corner of the forward day coach on the Lackawanna Limited, west-bound, as it neared North Scranton, Pennsylvania, Tuesday, November 25, 1913, and pinned a sheet of paper on the wall, the passengers in the front seats, who had been casually wondering what caused the strange, crackling sounds that had been coming from the cubby-hole, pri...  READ MORE
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Posted: 04/04/2020
Category: Vintage Ham Radio
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Ad-Hoc Hybrid transceiver with 3-400Z finals?

Dentron MLX-MINI gets some boots  The  Dentron MLX-MINII thought it would be cool to use the Dentron MLX-MINI on the Saturday Vintage Sideband Net but it's a little marginal since the rule is "no tubes, go home!".   However hybrid rigs are allowed, and Special Dispensation is given for rigs with Red LEDs.    So I thought the MLX was double-qualifed - even more so after I realized t...  READ MORE