crystal detector

Multi-Elmac - THE MULTI-ELMAC AF-67 Trans-Citer is a ten-tube variable frequency or crystal controlled seven band transmitter.

30m QRSS Junkbox Beacon - This simple 30m QRSS beacon is built entirely out of junkbox parts, the only component purchased specifically for this project was the 10,140kHz crystal.

Crystal Radio Resources Priority listing - Comprehensive site for crystal radios. Info on the third annual xtal set bcb dx listening contest.

INRAD International Radio - Supplier of custom designed, high performance quartz crystal filters for communications receivers and transceivers, for Yaesu Icom Kenwood and Collins radios

Expanded Spectrum Systems - Flash crystals, Feakin' beacon keyer, beacon attenuator

Bliley Technologies, Inc. - Quartz crystal oscillators, frequency control.

Hamtronics, Inc. VHF/UHF FM Receivers - A full line of single-channel synthesized and crystal controlled vhf and uhf fm receivers. Great for repeaters, telemetry, and control applications.

Sherwood Engineering Inc. - Cooling kits, drake filters, speach processors, audio switch boxes, synchronous AM detectors,

Counter Surveillance - Field Strength Meter - The zap checker is a counter surveillance, bug detector, field strength meter

How to build a simple wireless telegraph set - The simplest wireless telegraph set consists of a means of generating and controlling a spark which sends out radio waves into the air, and a receiver or detector to detect the radio waves.

G3XBM Roger, QRP pages - G3XBM's Amateur Radio Page - with QRP, VLF and crystal set links

KQ6XA Bonnie Crystal - Lots of projects and introductions to RDF and T Hunting

Batteries and gadgets - Your source for weather radios, communication headsets, 14 channel radios, M&M groovy radios, smithsonian crystal radio and weather station kits, line restrictors, antennas,ham radio accessories, and battery products.

Circuit Specialists - We specialize in pc-based data acquisition systems, test equipment, electronic components, disk on modules, choke and coils, diodes, capacitors and connectors, potentiometers, crystals, resistors, relays

Xtal Set Society, Inc - The society publishes several books about crystal radio. Sell crystal set projects, tips for crystal radio design, ham radio kits, radio parts and common radio electronic components

MJ Products - Wholesale distributor of CB radios, parts, antennas, microphones, power supplies, crystals, echo boards, expanders, meters and CB accessories.

Alabama radio - Eastern Alabama's dealer of amateur radios and antennas, CB radios and antennas, scanners, radar detectors, power supplies, and other related accessories.

GI Joe's radio electronics Priority listing - Dealer for Cb radios, Cb antenna & accessories Galaxy radio, Cobra cb radio, Ranger, Texas Star, Palomar. Police scanner, radar detector, GPS, GMRS, FRS, Wilson cellular amplifier & antennas. Owners manuals, schematics and links.

Go4Electronics.com - CB Radios, Scanners, Radar Detectors, Two Way Radios/GPS store. Products you can trust Cobra, Uniden, Garmin, Rocky Mountain, Whistler and more. We are your specialty store for your mobile communication needs. Based in Tampa Florida.

EMF Safety Superstore - The Ultimate Source for Electromagnetic Pollution Detectors, Shielding Devices and Protection Information

Crystal Radio

Bass EQ Pre Amp - A Bass Eq Pre amplifier for high impedance PU by ON6MU

Crystal set radio Priority listing - A short wave crystal set radio project

Ham Radio Circuits  ^pop - Circuits of SSB Transceiver, AM DSB Transmitter, Antennas, BFO, VFO, 807, FM Mike, Crystal filter and more.

Crystal Radios at crystalradio.org.uk - Shortwave and broadcast band listening using crystal (passive) radio.