...The radios we'll always remember

Articles

Schematics & Manuals and other reference material of interest.

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Ballast Tube data and substitutions

Here's some information that isn't often needed, but difficult to find:   A. P. Jacobi's Ballast Tube Handbook and Substitution Guide.    Download from the "Attachments" link below....  READ MORE

W9RAN
08/234/2023
Tech Library
Electricity Explained

We've heard there is some confusion about how electricity works.    This should clear things up....  READ MORE

W9RAN
08/214/2023
Tech Library
DIY Layout Creator

If you're like most homebrewers, often times you just want to build a one-time-only circuit and end up with a haphazard layout or one you have to tear apart and start over on to get everything to fit.    DIY Layout Creator is designed for just this purpose!   Not only do you get a layout that will work but a document that shows what you did so when you come back to it 3 weeks ...  READ MORE

W9RAN
05/125/2023
Tech Library
Minimalist QRP Book by IZ3AYQ

Everyone probably remembers building - or at least thinking about building - a small simple transmitter or receiver from an article in one of the radio magazines.      They may not have used the term "minimalist" back then but the idea was the same - no frills, just a simple rig that could be easily assembled and was capable of being used on the air.   Nowadays, QRP opera...  READ MORE

W9RAN
04/105/2023
Tech Library
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
02/56/2023
Tech Library
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
02/52/2023
Tech Library
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
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
05/125/2022
Tech Library
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
04/112/2022
Tech Library
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
04/111/2022
Tech Library
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