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bounce, yer money order will get lost in the mail and yer dog won't come home. click on our "Contact Us" icon above for the quickest response to your questions. THE IMPOVERISHED RADIO EXPERIMENTER SET 4 VOL THE IMPOVERISHED RADIO EXPERIMENTER SET 4 VOL THE IMPOVERISHED RADIO EXPERIMENTER SET 4 VOL THE IMPOVERISHED RADIO EXPERIMENTER SET 4 VOL THE IMPOVERISHED RADIO EXPERIMENTER SET 4 VOL THE IMPOVERISHED RADIO EXPERIMENTER SET 4 VOL THE IMPOVERISHED RADIO EXPERIMENTER SET 4 VOL THE IMPOVERISHED RADIO EXPERIMENTER SET 4 VOL THE IMPOVERISHED RADIO EXPERIMENTER SET 4 VOL THE IMPOVERISHED RADIO EXPERIMENTER SET 4 VOL THE IMPOVERISHED RADIO EXPERIMENTER SET 4 VOL Here's the full set of all 4 Volumes of the 'ol wire stripper's Impoverished Radio Experimenter Series. These booklets proved so popular it just made sense to offer the whole set in one money saving lot. THE IMPOVERISHED RADIO EXPERIMENTER VOL. 1 Tricks, tips and secrets to help the builder of simple radios and electrical gear achive high performance at mininal cost! Experimenter's notes on Vacuum Tube Substitutions, Inexpensive Tube Power Supply, Grid-Leak Detectors. Regenerative Receiver and more! You must try building a simple radio with tubes! It's easy, and it's cheap. (And don't tell me that doesn't appeal to you...) Do you remember the excitement when you built your first crystal set? This is even better! You also get details on a crystal set that was converted to a grid-leak radio. You'll get details on how various tubes worked in the circuit. You get pages of tube charts and basing diagrams, a reprint on tube theory from 1931, a bibliography of research papers from the late 20's, and you get a brief demonstration of a one-tube regenerative receiver built with a 6SN 7 glass tube from the 1950's (had to scrape the mud off it) using a circuit from 1927. It uses a home-made variable capacitor and the home-made power supply described. Early radio circuits are simple. You don't HAVE to use the exact parts specified. Mix, match, substitute and, above all, do it on the cheap. Old time radio fun for pennies. That's what it's about. Add this to your reference library. Soft cover 5 1/2" X 8 1 /2" booklet 48 pages well illustrated. THE IMPOVERISHED RADIO EXPERIMENTER VOL. 2 Tricks, tips and secrets to help the builder of simple radios and electrical gear achive high performance at mininal cost! Building radios (and transmitters and antenna-tuners if you have a ham radio license) is about matching the proper capacitors with the proper coils to get a desired frequency. You can wind a coil and hook it up to a capacitor, but how will you know if it's right? A grid-dip oscillator, or gdo, is a measurement device that will tell you. And it's very simple - first used in the 1920's. You'll learn to use the gdo along with simple formulas that will put your tank circuits on the frequencies you want. You can use other formulas along with a known coil or capacitor to measure the value of an unknown coil or capacitor. In other words, for a radio builder, you gotta have a volt-ohmmeter and gdo. Other-wise, you're just wasting valuable time. You'll learn how to take a pentagrid converter tube and build a one-tube shortwave converter that will put shortwave broadcast stations on a frequency that an ordinary AM radio, or crystal set for that matter, can receive. While your crystal set buddies are listening to some talk show idiot on the AM band, you can be listening to a talk show idiot on the other side of the world on 5 or 10 mHz! And you can listen to the reasonable BBC out of London, or stations in Canada, Germany, Belgium, China, Cuba (talk about BS!) and elsewhere. It's powered with the simple power supply built in The Improvished Experimenter Vol. 1. You'll learn how to make a top rate slow-motion dial drive for your radio. Its 7.5 to 1 ratio makes tuning stations easy. You'll find that it works far better than many expensive antique dial drives. It's easy! You'll learn how to make a simple rig for winding professional hi-Q space wound coils. It's easy and low-cost. You get many more hints, tips, and ideas for exploration. Some people prefer to whine that they can't find parts. It can be a problem, but geez... in the time it takes to whine, you can build your own parts! Valuable info and it's Cheap! Soft cover 5 1/2" X 8 1 /2" booklet 48 pages well ilustrated. The Impoverished Radio Experimenter How to build an impedience bridge and more from the 'ol wire stripper hisself, Tom Lindsay. The circuit is simple, in use for 70 years, and is remarkably accurate. It's like a crystal ball that looks inside mysterious inductors and capacitors and gives you a good idea of what they are. You can't build much of anything, mechanical or electrical, unless you have useful measuring tools. The first part of this new volume shows you how to build a simple impedance bridge that will allow you to measure inductors and capacitors to two significant digits. That means that if you find an old choke in a radio chassis in the alley, this will tell you whether it is 2.5 henries or 17 henries. This bridge will tell you if that old paper capacitor you removed from the underside is still .01 mfd or has changed. Not only can you test old commercial parts of unknown value, you can also build your own capacitors and inductors (see Voice of the Crystal) and measure the results. Then you can intelligently use the parts to build all kinds of radio gear. The bridge needs an audio tone. If you have a simple audio oscillator, you're set. But if not, you'll find plans for a simple one IC oscillator that will put out a 150-1500 cycle tone. Use it on the bridge or for other tests. And you need a pair of earphones to listen to the tone inside the bridge circuit as you make bridge adjustments. A pair of 2000 ohm headphones is best, but you'll get plans for another very simple one IC amplifier that will make a pair of low-impedance of "Walkman" type headphones, available almost anywhere, "look like" a pair of 2000 ohm phones. That means you can use Walkman earphones on that crystal or regenerative receiver you're building. It also gives a volume gain of 20 (200 optional) that will make measurements easier and bring in more stations. You'll learn how to make pointers for knobs, and shielded cases from low-cost lumber that will make your home-built gear look like expensive antique radios. You'll see a large homemade variable capacitor built from surplus printed circuit boards and shaft collars, and the simple one-tube shortwave regenerative receiver that was built around it. Your impedance bridge will allow you to experiment with audio filters that will dramatically improve the selectivity of a regenerative receiver so that you can copy code in crowded amateur radio bands. And you'll get some ideas for that larger power supply you'll need for more advance receivers and transmitters. Same nuts-and-bolts how-to. Heavily illustrated. More ideas than you'll be able to pursue in a month of Sundays. Get a copy! 5-1/2 X 8-1/2 booklet 48 pages, well illustrated The Impoverished Radio Experimenter Well, the 'ol wire stripper is at it again! He's unstoppable. In this latest volume of Experimenter he'll show you how to build a TRF regen receiver, a one-tube crystal converter, a versatile power supply, a slide rule dial and much more! Like I said, he's unstoppable. Some people think store bought is always better. Even when talking about radios. Some guys think you could never build a regenerative receiver as good as the National's old SW-3, for instance. That's bunk. You should be able to build something every bit as good, if not better. And the ideas needed to do that are here. First, we start out with a demonstration receiver that will hit you with many ideas, some of which you'll want to try. This receiver is a four tube regenerative with an RF amplifier (TRF). The original configuration uses two audio tubes with audio filter in the back end to drive headphones, but the filter turned out to be more selective than needed. Next, the shortwave converter idea of Vol 3 is taken to the next step: a modern tube and a crystal controlled oscillator. When this unit was put in front of the TRF receiver, 15 meter (21 mhtz) amateur band signals came flooding in from all over the planet, loud, stable, and distinct. The two units together with a simple tube transmitter could put you on the higher DX bands. Then to make tube experimentation easier and larger projects possible, we build a quality power supply capable of providing a wide range of voltages at high current levels. Finally we explore slide rule dials. These simple, inexpensive fabrications of string and pulleys were used in millions of old broadcast radios, and they worked beautifully. You'll see how one was built from aluminum plate and simple pulleys that could be mounted on a homebuilt receiver. The result is a slow motion dial drive with a long bandspread dial that makes your homebuilt receiver fun to use and will impress the socks off your half-wit relation. More useful ideas for the radio builder. With schematics, drawings, and photos. Jam-packed like the first three volumes. Get a copy! 5-1/2 X 8-1/2" Softcover booklet 48 pages, well illustrated Visit my Marketworks Gallery! Power Tools for Power Sellers! Phone: (***) 744-4449 M-F 9:00 to 4:00 Pacific Standard Time This item has been seen by alt people! (The impoverished radio experimenter set 4 vol was posted and is owned by: Sherrie Glass) |
Sherrie_Glass@chicagopartsnetwork.com (Sherrie Glass) for more information.
