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Glowbugs - Homebrew Tube Amateur Radio Transmitters and Receivers

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Glowbugs - homebrew (DIY) tube gadgets, receivers and transmitters, dedicated to the Golden Era of Amateur Radio. Generally, any small, home-built tube-type transmitter or receiver may be referred to as a glowbug. The majority of glowbug transmitters are designed to be used in the CW radiotelegraphy mode. www.squidoo.com/glowbugs

12 comments

Jan 30, 2012. 10:38 AMM0HIZ says:

Very nice - there should be more ham radio stuff on Instructables.

Aug 31, 2011. 7:01 PMwelder guy says:

I like it! This is the true spirit of HAM radio! I have to make one of these soon!

-KC2VDM

Aug 25, 2010. 12:26 AMshobanaelango says:

can any body tell me how to make a fm radio????????

Mar 18, 2011. 6:04 AMwa2qcj says:

The biggest issue for a FM receiver is the detector stage, and a limiter. The limiter stage is simply an amplifier that is followed by a diode clipper stage. Insertion of these 2 stages into an AM radio will net you a FM receiver. Schematics for FM detectors, and limiters abound on the Internet, so a google search should net you what you need. If you can follow a schematic, then you should do quite well with this project.
IC versions of these radios are also very common, and readily available.

Mar 19, 2011. 8:39 AMshobanaelango says:

thanks for the reply