bipolar regenerative rec

Active HF antenna - An active HF receiving antenna circuit by G7BCJ

HF Receiving Loop Antenna - HF receiving loop antenna, an easy-to-make receiving loop antenna for HF

An easy loop for VLF - An easy VLF loop, 200Hz-20kHz reception without transformers by Renato Romero and Marco Bruno

Islands, Castles and Portable Operations - Island DXpedition and portable operations, including present, up-and-coming operations, IOTA, NON-IOTA, IOSA, IIA, ILIA, DIB, Lighthouse, and other Island Award Program operations

US Islands Directory - These island databases are managed and maintained by the Qualifications Manager, Ray Phelps, AD4LX There are 2181 identified US Islands!

Auckland ATV Group - The ATV User's Group is a subgroup of the Auckland VHF Group, Club call ZL1BQ, compromising of persons interested in the transmission and reception of Amateur Television

Contest audio file - MP3 file recording a QSOs with SP5CKA and SN7N (SP7PS) in SP DX Contest 2001 on 40m (recorded by SP7PS)

ATV-TV.org - Welcome to the Amateur Television Directory, the source for finding sites related to Amateur Television and Ham Radio. Find out where Amateur Television is being used in your state or country.

Recommended frequencies for digital modes - Active digital mode frequency list compiled by Jason Buchanan - N1SU

Echolink Directory - This web site was created to aid amateur radio hobbyist who travel from city to city and country to country to locate Echolink stations in the area they will be traveling to.

Transmitter hunting, in San Francisco Priority listing - Amateur radio direction finding, transmitter hunting. triangulating a radio signal direction and plotting its bearing on a map. hunters use doppler systems for tracking hidden transmitters

Pascall Electronics - Pascall's specialist RF & Microwave division specialise in components for radar, EW receivers, navigation & location equipment, communication and marine safety systems.

Electron Tubes and Vacuum Tubes for Industry - Electron tube and vacuum tube stock-list with prices 4. Audio, broadcast and industrial tubes, triodes, tetrodes, thyratrons, ignitrons, vidicons and CRT's, microwave devices, nixies and receiving types + Bird RF devices and test equipment. Quality tubes at reasonable prices with many hard to find items available

Win APRS - Automatic Position Reporting System windows program, allow monitoring of real time geographical information such as the position of vehicles, the status of weather, radio direction finding and more.

LocCalc - Distance and directions calculation program using both Spheric, the perfect round earth model, and Vincenty's inverse ellipsoid algorithm, the WGS 84 earth model.

HamCalc - Add-in module to Microsoft Excel, contains a set of radio amateur relevant special functions: DistSphericLocator(Loc1; Loc2) Calculates the spheric earth model distance between two locators [km] DirSphericLocator(Loc1; Loc2) Calculates the spheric earth model direction from Loc1 to Loc2

CW Decoder - Decode and trasmit morse code, 5 to 50 wpm ,keep hands on the keyboard, mouse free transmit/receive operation.

QuikPSK - Supports both PSK31 and PSK63, sends and receives color thumbnail portraits by PSK63, displays 24 PSK63 channels simultaneously, and features semi-automatic mode selection between PSK63 and PSK31. Merely left-click on a PSK63 signal to copy, or right-click on a PSK31 signal to copy.

Packet Terminal Interface  ^updated - Simple Windows based TNC interface program Designed for ARES operation, simple operator interface to connect and perform communication functions, control operator programs screens before operations Both receive and transmit screens Simple Windows based TNC interface program Designed for ARES operation Simple operator interface to connect and perform communication functions Control operator programs screens before operations Both receive and transmit screens

DNBTV - This experimental software will send pictures or slow video directly from your webcam through your soundcard. you will need a webcam capable of 160*120 24bit RGB.

WD6CNF Voice keyer - Audio voice keyer Microphone input, speaker output Live microphone enable Record/play audio from twelve memories Display text of recorded audio Transmitter keyed via serial (com) port Loop (with variable delay) audio output

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

Ferrite on Reducing RFI - Using ferrite to reduce radio frequency interference with your PC monitor or antennas with your receivers or transceivers.

Icom 706MKIIG fan mod - Modification of internal fan on receive

KE5PBW Regenerative Receiver - A regenerative receiver project at AA5TB