This website - http://www.pmillett.com/technical_books_online.htm - has a fascinating collection of old technical manuals available in downloadable PDF format. Here are examples of the kinds of books you will find at this site (the book descriptions come from the website):
Audels Radiomans Guide, Edwin P. Anderson, 1945, 880 pages: “covering theory, construction, and servicing including television electronics”. It covers everything from sounds waves through basic electronics, PA systems (including a little info on a WE theatre amp), transmitters, car and aircraft radio, troubleshooting - you name it, it’s in here.
Vacuum Tube Design, RCA, 1940, 260 pages: Intended for internal use only, this book contains a series of 26 lectures in a course taught by RCA engineers in 1937 and 1938. From the preface: “The lectures were intended to provide a review of the basic principles underlying the design and manufacture of vacuum tubes.”
Magnetic Recording - Wire and Tape, M. L. Quartermaine, 1952, 72 pages: An interesting book about the construction of tape and wire recorders. Includes theory and construction details, schematics of record/playback electronics, even info on how to make your own tape heads!
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1. Hayseed Hamfest sells recap kits for Drake and other vintage gear.
2. WB4HFN has an extensive section on Drake equipment.
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Be warned! If you visit the Early Television Museum website (the source of the picture above) you can easily lose an entire afternoon. You’ll find information about early broadcast stations and the different systems that they used; precursors to some current forms of television sets (like projection t.v.s from the 1940s); and interesting information on different television stations such as W2XAB - CBS. In case you have more time on your hands and your XYL has not handed you a honey-do list, you may want to check out the Resources section of the website.
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Google’s graphic image for April 27, 2009
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No…not parts for your ham equipment. Instead, parts for appliances, cameras, computers and, it seems, much more. While I have no clue if their prices are any good, nonetheless, they may be a good first stop when hunting for a component for the expensive oven that you bought.
See: Parts store
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When I first got my amateur radio license, I was a bit perplexed by the term HT. It had a strange ring to my ears. When I was a kid, the little transceiver you held in your hand was referred to as a walkie-talkie. Yet in the world of ham radio, it was referred to as a handie talkie. One of my brother-in-laws, who is a fire captain, also refers to it as a handie talkie. I assume the “handie” part refers to one’s hand, that is, having a transceiver that is handy. But might it originally have referred to one’s head? See the image below which originally appeared here. I’m assuming that this one-tube wonder did not require a B+ power supply.
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You might find the answer at RadioReference. This website bills itself as “the world’s largest radio communications reference website, featuring a complete frequency database, trunked radio system information, FCC License assignments and callsign maps, 10-Code Lists, agency maps, files, downloads, links, and detailed agency information for most public safety, military, and local government communications.” Check out their site.
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For those hams who are still wondering how vacuum tubes work, see “Electrons at Work.”
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