Air Variable Capacitors
Eham.net article: build your own air variable capacitors! - n4dfp shows you how, step by step.
- eham.net is a web site dedicated to ham radio (amateur radio).
http://www.eham.net/articles/5217
24 Ghz Antenneschakelaar
24 Ghz Antenneschakelaar
http://www.wa1mba.org/wr42sw2.htm
Electronica F. Bakelaar
Electronica F. Bakelaar
http://home.kpn.nl/fbakelaar/index.html
HF Transceiver Kit
HF Transceiver Kit
http://www.elecraft.com/
Spectrum Analyzer Project 1
Information about tv-tuners, how they work. how you can build your own spectrum analyzer.
http://hem.passagen.se/communication/tuner.html
Spectrum Analyzer Project 2
Homebrew amateur radio spectrum analyzer
http://www.nitehawk.com/rasmit/sa50.html