dual gate

Limited space Delta Loop - Here is a simple and easy to build antenna in a Delta Loop configeration that should make 10 and 12 meters lots more fun if you have a limited space situation o

G0KSC 70 Mhz and 50 Mhz Dualband Yagi - Direct feed, no matching required dual band Yagi

8el 50Mhz / 70Mhz Dualband Yagi - Only just over 6 foot long, a compact 8 element dualband Yagi for 6 and 4 meters band. No traps or coils, no matching required. Simple to build by G0KSC

Dual Band Yagi 28Mhz and 50Mhz Priority listing - NO Traps or coils, NO matching required. Direct 50 Ohm feed. Easy to build and nothing else like it! Enjoy 50/28 with one feedline to a dual band high gain Yagi by G0KSC

4:1 balun project - CVARC 4:1 Balun Project Kit by AE6YC

4:1 Dual ferrite bead balun - The Dual-Ferrite-Bead 4:1 HF Balun, some preliminary measurements

Bent Dipole with gain - Bent dipole plan by G8MNY

Dual Band Quad Antenna - 4elements 50Mhz and 70Mhz dual band OWA Quad Antenna with a 2.7 metre length boom by G0KSC

Homebrew Arrow Satellite Antenna - The Arrow Antenna is a design classic: it combines light weight, compact design and functionality in a single package for operating FM dual band satellites such as AO-27, UO-14, SO-41 and SO-50

UHF VHF Folded Dipole - Dual band 2 m and 70 cm folded colinear aerial array project by G2BCX

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

Bristol ARC TN/VA BARC - The Bristol Amateur Radio Club's purpose is to: Facilitate the exchange of information and general cooperation between members to promote amateur radio knowledge, fraternalism and individual operating efficiency

N9GTC Gateway Technical College - Gateway Technical College Amateur Radio Club

Southeastern Asterisk Radio Networks - Interoperability solutions via Asterisk based RF Gateways - Southeastern Asterisk Radio Network (SEARN) and the Southeastern Asterisk Amateur Radio Netwok (SEAARN) are designed for the purpose of developing interoperability capabilities amongst diverse communications systems. Digital Amateur Radio Project Association - DARPA expanding the digital experience.

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.

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

A Two-Way Morse Practice Set - The system consists of a pair of Morse practice oscillators connected by a piece of two-conductor cable. Pressing the key on one unit produces a sound in both units by Peter Parker VK3YE -

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.

About Repeaters - Introduction to repeaters, repeater bands, linking, repeater gateways, using repeaters and operating guidelines by WIA.ORG.AU

Dutch Amateur Radio Transponder on HAMSAT  ^updated - Announce from PE1RAH regarding the dutch transponder on hamsat VO-52

Kenwood TH-G71 Manual - Instruction manual for Kenwood TH-G71A, G71E handheld FM Dual band transceiver

Kenwood THD7E Notes - THD7e report and AX25 usage by PE1DNN

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).

Regenerative receiver for the AM band - Build the Moorabbin, a regenerative receiver for the AM broadcast band by Peter Parker VK3YE

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