dual gate fet

Loop antenna for 10m and 15 m - Dual band rectangular loop antenna for 15m and 10m

Dual Band Wire Beam 12 and 17 m - The Dual-Band Wire Beam was inspired by L.B. Cebik's (W4RNL) article The Elusive Moxon Nest. Fiberglass tubing spreaders, Flexweave elements, an aluminum hub, and two die-cast aluminum flanges combine to provide a 12/17m Moxon nest with one 50 ohm feed.

Double Quad Antenna - 435 MHz double quad antenna by F5WN

The Dual-Ferrite-Bead 4:1 HF Balun - A pdf document about the dual ferrite bead 4:1 balun, some preliminary measurements

Duo band antenna for 145/435 MHz - Dual band vhf uhf dipole antenna by DL7JV

RW3WWW Amateur radio club SPORADIC - Students amateur radio club SPORADIC of Kursk's state technical university . In entire lifetime the radio station worked under the main calls: UA3KUO, UK3WAF, UZ3WWW, RW3WWW, and also used more than 60 calls in radio-expeditions(RC3W, R6SE, RP3W, RI1OP, RI1SI, R6SC). The chief of radio station since 1977 is Pikkiev Valery RW3WW.

MX0GGP - ANARC - Angel of the North Amateur Radio Club based in Gateshead, Tyne and Wear - Club callsign - MX0GGP

W7PX Hellgate Amateur Radio Club - Hellgate Amateur Radio Club W7PX - Missoula Montana

N9GTC Gateway Technical College - Gateway Technical College Amateur Radio Club

VE3VRW Macintosh Satellite Gateway - Listen to the Gateway Live on the internet Amateur Radio Operators in Southern Ontario and Western New York have been using the VE3VRW Satellite Gateway via the Toronto Area SSPBD Repeater System to make contacts on AO-27, UO-14, SO-67, Sunsat, SO-41, SO-50, Echo, Mir and ISS since it was first installed in 1997. MacDoppler tracks the FM UHF/VHF Amateur Radio satellites 24 hours a day, 7 days a week.

Carteret County Public Safety Live Scanner - Carteret County NC Public Safety Live Scanner Audio Feed

Columbus Georgia and Phenix Police - Live Streaming of Columbus Georgia and Phenix City Alabama. Police, Fire and EMS

Greenup County Live Police Scanner Priority listing - Public Safety Radio, serving Boyd, Carter and Greenup Counties in Northeast Kentucky and the City of Ironton in Southern Ohio. Streaming Live 24/7

I0JXX Ham Radio Parts - VHF UHF Amateur radio antenna and antenna parts, accessories for homebrewers, antenna kits, tubes, antenna masts, antenna tripores, insulators, power amplifier mosfet, power splitters by I0JXX

Cross Country Wireless SDR Receiver - SDR Receiver a compact high performance HF software defined radio receiver designed to be used in fixed or portable stations. Version 2 of the receiver is now available. It now has an RF pre-amplifier using a power MOSFET and other revisions to improve it's performance both as a stand alone receiver and as an IF panadaptor with HF and VHF transceivers.

LBA Technology - LBA - DTV & RF test systems; AM antennas; RF shielding; RF compliance, safety, interference, intermodulation services; AM detuning, Antenna SWR Analyzers

Introduction to Data Communications - Roger Cooke G3LDI article on Data Communication modes

MorseFusion: The novel way to learn Morse code. - Learn the new, natural way: Have a novel of your choice spelled out in English letter by letter. Letters and numbers gradually get replaced by Morse code.

RTTY Basics - Introduction to RTTY by G3LDI

APRS Messenger program - APRS over digimodes including PSK, QPSK and GMSK with digipeating and two way HF internet gateway to the APRS-IS

SDR Navigator for Winrad - The SDR Navigator is a program which works as a layer between Winrad and your EXT I/O HW DLL (Softrock, PMSDR, Elektor SDR,..). The SDR Navigator gives the user some useful functionalities to quick navigate with Winrad by HB9FBD

DRAKE TR7 Downloads - Circuit diagrams drake tr7, Schaltbilder Drake Tr7, antenna tuners, baluns, and home brew power supplies, dual tone ssb test generator, zweiton ssb test generator, zweiton testgenerator, dual tone test generator by DK4DDS

A CW QRP Transceiver for 20 m band - The little QRP presented in this article may be built in a gradual manner, it is divided in two main modules (plus VFO), you may also complete only a single part (RX or TX module).

The Duet CW RTX - Design for a dual-band CW transceiver using the AD9834 Direct Digital Synthesizer

Big Dummy's Data Interface - Simple soundcard data interface for the various data modes