Articles
Technical information
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Hazard E. Reeves - audio pioneer and defense contractor
Hazard E. Reeves (1906-1986) may not be a household name, but his work is well known to every moviegoer. He was an American pioneer in sound and sound electronics, and introduced stereophonic sound for motion pictures. He met Fred Waller at the 1939 World's Fair and saw the potential of Waller's "Vitarama" system which he invested in and which soon bec... READ MORE |
 NB9M 04/12/2019 |
Historic |
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Whatever happened to Globe Electronics
In his book "In Touch with Leo", the success and growing backlog of CB-100 orders is what drove Leo to his banker, Lou Ross, who asked him why he didn't anticipate the number of orders and required capital. Leo responded "Lou, never on God's green earth could I have believed such an influx of orders!". More funding was needed than... READ MORE |
ranickels 03/18/2019 |
Vintage Ham Radio |
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Spectral Purity using Epson Programmable Oscillators
In the 5 or so years I've been using the Epson oscillators I've looked at the spectral output many times. Without a doubt the harmonic output from the Epson oscillator is high as would be expected from a square wave device. The question to me has always been "does it matter"? PLL controlled digital oscillators have long been ... READ MORE |
ranickels 03/12/2019 |
Crystal Replacement |
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The Foxhole Radio
When I was a kid, my dad gave me a thin hardcover book called "Boys Fun Book - Things to Make and Do". It was printed during WWII on very thin paper as a wartime conservation measure, but was chock-full of interesting projects, ranging from hobbies and magic tricks to sports, puzzles, camping...and the chapter I was drawn to: "Unusual Radios You Can... READ MORE |
ranickels 03/08/2019 |
Vintage Radio |
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Using rectifier diodes as varactor/varicap substitutes
As anyone who likes building radios knows, it's getting harder and harder to buy RF components. One of the last casualties was the 3-section pi-wound RF chokes made by Hammond, a company that has done more than most to support the vintage radio and audio hobbies. The Toko variable inductors long favored by QRP enthuisiasts have become all but unavailable, and va... READ MORE |
ranickels 03/02/2019 |
Technical |
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Harlan Andersson, computer pioneer and co-founder of Digital Equipment Corp.
The following obituary appeared in the Freeport Journal-Standard on Febr. 9, 2019. I attended a lecture by Mr. Anderson in the late 1990s after moving to Freeport and working for Honeywell where despite being a supplier to DEC, few realized the local connection existed to the founder of what once was the second-largest computer company in the world. Mr. Ander... READ MORE |
ranickels 02/09/2019 |
Historic |
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The Case of the Phantom Voltage
A Heathkit HW-12 gave me a troubleshooting challenge the likes of which I've not seen before - or even heard of! A few days ago the transmitter wouldn't produce output, and in checking voltages and I measured -75 volts on the ALC line which should be -20. But it corrected itself and I figured it must have been a solder splash or something that cleared by itself. ... READ MORE |
ranickels 02/08/2019 |
Technical |
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The Solvay Conference, 1927
The Solvay Conference, founded by the Belgian industrialist Ernest Solvay in 1912, was considered a turning point in the world of physics. Located in Brussels, the conferences were devoted to outstanding preeminent open problems in both physics and chemistry. The most famous conference was the October 1927 Fifth Solvay International Conference on Electrons and Photons, where the world’s mo... READ MORE |
ranickels 12/27/2018 |
Historic |
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Heathkit Singlebanders...cheapest SSB radio made? Or just one of the best?
Put yourself in 1963. .. A stamp was a nickel, bread was 22 cents a loaf, and you could buy 3 gallons of gas for a buck. The average wage in the US was $84 a week. If you were a ham, you might have been able to build and trade your way up to a really nice AM/CW station - maybe a Valiant or DX-100 transmitter with an NC-300 or HQ-170 receiver - a huge improvement over the ... READ MORE |
ranickels 12/17/2018 |
Vintage Ham Radio |
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Astro...Don Stoner's legacy
A recent post on the Cubic-Astro mail reflector noted the similarities between the rare CIR Astro 200 and the much more common Cubic Astro 150 transceivers. And therein lies an interesting story... I have done a little research on the CIR Astro 200, and the commenter was right - it is the progenitor of the Astro line we are much more familiar with as a result of Swan (al... READ MORE |
ranickels 12/09/2018 |
Vintage Ham Radio |
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