Articles
Schematics & Manuals and other reference material of interest.
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Phillips Tube Substitution Guide
Ever run into a weird tube in a foreign-made radio, maybe one with an EL or EM part number? This 1965 cross reference from one of the largest tube manufacturers in Europe might help. Download it from the Attachments sectio below.... READ MORE |
 W9RAN 02/25/2023 |
Tech Library |
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What is Q?
What is Q? A concise definition: "In physics and engineering, the quality factor or Q factor is a dimensionless parameter that describes how underdamped an oscillator or resonator is. "We know it's important in RF circuits - low Q coils or tuned circuits will result in loss and perform inefficiently. We may remember from the Handbook that the Q of a coil equals the ... READ MORE |
W9RAN 02/21/2023 |
Tech Library |
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101 Electronic Circuits
Most hams and hobbyists got their start in homebrewing by building simple circuits published in the various magazines. Every so often most of them could collect a bunch of popular circuits and combine them into a book - Sams, TAB Books, and the magazine publishers among others. Here's one from Gernsback, the publishers of Radio Craft magazine that is nicely organize... READ MORE |
W9RAN 01/05/2023 |
Tech Library |
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Triad transformer archive
In an era when many legacy companies seem to have forgotten their legacy, or have been bought out and remnants of their vintage past have been scrubbed from their websites, it's nice to see a company that does just the opposite. Triad Transformers has been around since 1943 and embraces its past, as a supplier that powered everything from Leo Fender's guitar amplifiers to the Apollo mission... READ MORE |
W9RAN 05/05/2022 |
Tech Library |
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Popular Electronics
The daddy-of-em-all! The magazine we all looked forward to showing up at the corner drugstore, the best way to spend allowance money that didn't need a spoon or a straw! The home of Carl and Jerry, Hank Bennet's SWL column, Herb Brier's Novice column and those photos of our fellow hams that we examined most carefully and compared their WAS totals with glee or di... READ MORE |
W9RAN 04/22/2022 |
Tech Library |
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73 Magazine online
Raise your hand if "73" was your favorite ham magazine in the 60s and 70s. ...oh boy, that looks like...everyone!Wayne Green, seasoned editor of CQ Magazine, struck out on his own and regaled readers with his opinions on everything from UFOs to world cuisine, but boring...he was not! Whether it was his devils advocacy vs. the ARRL, pioneering new modes of operation or technologi... READ MORE |
W9RAN 04/21/2022 |
Tech Library |
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Ham Radio Magazine
Ham Radio was an amateur radio magazine founded in 1968 and the first issue appeared in February of that year. In1990 it was announced that Ham Radio had been sold to the publishers of CQ Amateur Radio. The June 1990 issue of Ham Radio was the 268th and final issue published where subscribers were told of the sale and that they would receive CQ in the future. Ham Radio had many good tec... READ MORE |
W9RAN 04/21/2022 |
Tech Library |
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Shortwave Listening Books
Courtesy of internet uploaders, books on shortwave listening may be found at the Attachments section below. ... READ MORE |
W9RAN 02/22/2022 |
Tech Library |
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DX-60 Assembly Manual (PDF)
*** The PDF is Downloadable below ***Thanks to Mike, W5KRL, for making a good copy of a DX-60 Assembly Manual. ... READ MORE |
 stonebs 12/08/2018 |
Tech Library |
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DX-60B Assembly Manual (PDF)
*** The PDF is Downloadable below ***Thanks to Mike, W5RKL, for making a good copy of a DX-60B Assembly Manual. ... READ MORE |
stonebs 12/08/2018 |
Tech Library |
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