pl tone kit

G8VR a small Yagi for 50 MHz - Complete plans and drawings to build a Yagi for six meter band by Ken Willis, G8VR

Coax Balun - A very simple coax balun

A simple Wi-Fi Yagi  ^updated - Add two parasitic elements to the sleeve dipole of a Netgear Router

Build A Tin Can WiFi Antenna  ^updated - Build a tin can waveguide WiFi antenna in one hour. Then put it on a 18" inch direct tv dish. No coax signal loss. Use a USB device on antenna. Complete instructions to build this powerful wlan antenna

GenLog - Freeware Win98/NT/XP contest logging program, supports over 270 contests, Grid Square distance/heading routines, plus Grid maps by Dave Mascaro W3KM

DLĜLY Lübeck Award - The Railway Radio Amateur Group of Lübeck issues this award to all radio amateurs and SWLs.

United States Prefix award - Amateur award plaque for contacting at least 200 different prefixes fron the US or its possessions.

Metal Cable - Distributors of specialty metals, electricial wire & cable, and high capacity magnet mounts for government and business. Stainless steel bars and rods for nuclear applications.

Zetagi  ^pop - Zetagi amplifiers, accessories, power supplies, microphones, SWR and power meters, battery charges

QTH Locator and Calculator - Calculate bearing and distance and Locator online with this Java application.

Maidenhead Locator Calculator - On-line calculator for Maidenhead locator calculations. It will work out your Maidenhead locator if you supply it with map references or calculate map references from your locator code.

Replica of David Sarnoff s Key - Replica of David Sarnoff\'s Key, Marconi operator at Station WHI

Orbitessera - Orbitessera provides a mosaic of orbital information. Information is provided for the Space Shuttle, the International Space Station , Mir Space Station , and general Satellite Keplerian Elements information

Twinplex Receiver - How to Build the Twinplex Regenerative Receiver

KG-STV - Digital SSTV software for Windows XP Vista and Windows 7

MacDoppler - MacDoppler and MacDopplerPRO 3D satellite tracking and station automation software for Macintosh by Dog Park Software Ltd.

MorseDec - Macintosh application that decodes morse code into text, PPC and 68K

TrueTTY  ^updated Priority listing - Program for amateur radio digital communications via a sound card. Supported modes are RTTY (Baudot code), ASCII (7 or 8 bits), PSK31 (BPSK and QPSK) and AMTOR-FEC (SITOR-B, NAVTEX). SELFEC SITOR decoding is possible also. No additional hardware required, need only a sound card. Optionally you can use simple circuit fo PTT-control. Can cooperate with RZ4AG AAlog logger.

MPSKWIQ - PSK31 Software for the EZKIT and Windows 95/98 PC

WinSkan - Windows SSTV software

WIM - General purpose image display and analysis program with special features for analyzing satellite images

Spectrogram  ^pop - Shareware dual channel audio spectrum analyzer for Windows 2000/XP which can provide either a scrolling time-frequency display or a spectrum analyzer scope display in real time for any sound source connected to your sound card. Can be used for MTHELL, QRSS and DFCW by R S Horne

432 MHz EME PreAmplifier - 432 MHz EME low noise amplifier. Circuit, components and image by Christoph Petermann DF9CY

Tunekit - Filter Tuning Kit for Windows is a electronic filter synthesis program and a practical filter tuning aid for actually designing and building a working filter

50 MHz Transverter idea - Complete 144/50 MHz transverter with GaAs Fet LNA and 400 mW out. No printed circuit board. Schematics and images by Christoph Petermann DF9CY