Crystal Radio Supply
- Crystal radios kits, parts, and supplies.
- http://www.crystalradiosupply.com

Quality Kits
- Components and kits for audio, RF, digital, and antenna projects.
- http://store.qkits.com/

HobbyKits4U
- Manufacturer and retailer of hobby and educational electronic kits.
- http://www.hobbykits4u.net

Computer Controlled Automation
- Offers crystal radio supplies such as germanium diode variable capacitor.
- http://home.earthlink.net/~computercontrolled/web1/

W7CKW: Gerald Cluff
- High voltage capacitors, tubes, parts, and antennas for sale.
- http://www.cluff.net/ham.htm

Nationwide Radio & Eq. Sales LLC
- Offers a variety of amateur radio parts and accessories.
- http://www.marketworks.com/storefrontprofiles/default.aspx?sfid=86409

Mercury Magnetics
- Featuring power and audio transformers.
- http://mercurymagnetics.com/

Max-Gain Systems
- Air Variable Capacitors, RF Relays, capacitors, and fiberglass tubing.
- http://www.mgs4u.com/RF-Microwave/air-variable-capacitor.htm

Lloyd's Dipsy Dumpster
- Parts and pieces, advice, and vintage schematics. Extensive lists of old capacitors, and resistors.
- http://www.lloydsdipsydumpster.com/

Surplus Stuff
- Surplus electronic parts, tubes, transformers, equipment, and technical manuals for sale.
- http://www.surplustuff.com/

Jan Philipp Wüsten Elektronik
- Vintage electronic parts supplier in Germany. On-line catalog.
- http://www.die-wuestens.de/

Harbach Electronics
- Amplifier parts including heath wafer switches. Run by W8CQ in Melbourne, Florida.
- http://www.harbachelectronics.com/

Fair Radio Sales Company Inc.
- Sales of military and industrial surplus radio and electronics items, parts, and tubes. Lima, Ohio.
- http://www.fairradio.com/

Electronic Surplus
- Sellers of VHF radios. Connectors, brand names, oscilloscopes, frequency counters, ECG parts and semiconductors, chips, and circuit boards. Buy online.
- http://www.nmia.com/~elecsurp/

Electrojunk
- Buy, sell and swap vintage audio, radios, military, crystal sets, paper, parts, radio, scientific, tubes, from Alvin, TX
- http://www.electrojunk.com/

Display Electronics
- Supplier of electronic surplus parts from Thornton Heath, Surrey in England.
- http://www.distel.co.uk/

Cinnabar Electronics
- Offers a selection of transformers, chokes and parts.
- http://www1.iwvisp.com/cinnabar/page4.html

Barend Hendriksen HF Electronics
- Radio and RF electronic components from stock, in The Netherlands.
- http://www.xs4all.nl/~barendh/Indexeng.htm

HamRadioFun
- Radio kits, including a wide band active antenna, outdoor shortwave antennas, ham radio QRP transmitter, and an antenna tuner.
- http://www.hamradiofun.com/

Low Power Radio
- Sells low power AM radio transmitters.
- http://www.ontheair3.com

SS Tran
- Sells the AMT3000 Broadcast Transmitter Kit, a Part 15 low-power AM radio broadcast transmitter. Includes details and background information, specifications, contact and purchasing information.
- http://sstran.com/

ApogeeKits
- Electronic kits, tools, instruments, and free tutorials.
- http://www.apogeekits.com/

BA1404 Chips for Sale
- Sells hard-to-find BA1404 chip for low-power FM broadcast band radio transmitter projects. Includes links to low-power FM broadcasting resources.
- http://www.radiochips.com/

International Radio
- Crystal IF radio filters and performance enhancements for ham and shortwave radio products, also publications.
- http://www.qth.com/inrad/

ESKA Crystals
- Supplier of quartz crystals, oscillators and filters, both discrete and SMD versions.
- http://www.eska.dk/

Ocean State Electronics
- New and hard to find electronic components, kits, test equipment, and accessories..
- http://www.oselectronics.com/

Mini-Kits
- Electronic kits and components. From Australia.
- http://www.minikits.com.au/index.html

Transel Corporation
- Manufactures and sells communication equipment and spare parts. Includes online catalog, prices and shopping cart.
- http://transeltech.com

North Country Radio
- Kits, including transmitters and receivers. Technical articles and information on electronic subjects geared towards ham radio, shortwave and video projects.
- http://www.northcountryradio.com/

Sherwood Engineering Inc.
- Kits, components, and custom IF filter enhancements for most communications receivers.
- http://www.sherweng.com/

Ramsey Electronics
- Hobby kits, amateur radio gear, antennas, AM/FM broadcasters, security and monitoring cameras, test equipment, and tools. Downloadable catalog [PDF], FCC information, and forums.
- http://www.ramseyelectronics.com/

Electronic Rainbow
- Electronic kits for the hobbyist, education, industry, detective operations, and law enforcement. Includes CB sound, radio direction finder, and ham caller id kits.
- http://www.rainbowkits.com/

Sphere Research Test Equipment
- New and used electronic test equipment, tubes, semiconductors, RF and microwave products, and sliderules.
- http://www.sphere.bc.ca/test/

SHF Microwave Parts Company
- Microwave and RF parts for datalinks, television, voice, and telemetry.
- http://www.shfmicro.com/

EzATV
- Amateur TV transmitters, receivers, and accessories for ham radio operators. List of dealers and distributors, online ordering.
- http://www.4atv.com/

NHRC Repeater Controllers
- Repeater controllers and related accessories for amateur and land-mobile radios. Order by mail or phone.
- http://www.nhrc.net/

Powerwerx.com
- Anderson powerpoles and OEM power connectors for amateur radio and other DC Hobbies. Also, batteries, RF adapters, bulk wire, red/black zip cord.
- http://www.powerwerx.com/

Almost All Digital Electronics
- Hobby kits, assembled units and software for electronics hobbyists, engineers and radio amateurs.
- http://aade.com/