Investigates the inside of a cheap beach radio. It will show you different compontents and explain what they do. There are lot of stuff you can re-use from such radio.
http://hem.passagen.se/communication/explrad.html
Bentonite? That's the stuff used in clumping kitty litters, is great for getting an excellent conductive ground.
http://www.hard-core-dx.com/nordicdx/antenna/ground/bentonite.html
http://members.tripod.com/michaelgellis/mixerscom.html
Information on full range of Racal RA series receivers and associated equipment.
http://www.recelectronics.demon.co.uk/index.htm
Specificatiosns and pictures for a variety of old shortwave receivers.
http://www.dxing.com/rx/tindex.htm
electronic version of FCC Interference to Home Electronic Entertainment Equipment Handbook
http://www.kyes.com/antenna/interference/tvibook.html
W8UT, Al shows his Hallicrafters SX-28 restoration project.
http://www.thecompendium.net/radio/sx28.htm
A discussion on how to improve your reception by improving your grounding.
http://www.hard-core-dx.com/nordicdx/antenna/ground/ground2.html