rf amplifier plans

10 Meters EH Antenna  ^pop - PDF file with plans to build an eh antenna for 10 meters band, by lloyd butler VK5BR

17 Meter Coaxial Moxon Antenna - 17 m reduced size coaxial moxon rectangle, an exercise with an MFJ 259B plans by N0KHQ

20 Meters EH antenna plans - 20 M, 1 Foot antenna plan by wb5cxc, includes also two more versions of bigger eh antennas for 20 meters, contribuited by w0kph.

I4SBX EH Antennas - Three eh antenna plans for 20 40 meters bands.

More Information on the EH Antenna - How EH antennas works and how it has performed.

G5RV multi-band antenna - Multi-band centre-fed antenna capable of very efficient operation on all HF bands, specifically designed with dimensions which allow it to be installed in gardens and other open spaces which accommodate a reasonably-straight run of 31.1m (102 ft) for the flat-top standard model.

G5RV multi-band antenna construction guide  ^pop - Excellent guide to build a G5RV by Lombry

Low reactance multiband center feed wires - An antenna system is more easily interfaced to a radio when the input reactance at the feedline terminals is low or close to series resonance

Some J-Poles That I Have Known - The varieties of twinlead J-Poles and some performance standards, L. B. Cebik, W4RNL

Omega electronics - Omega Electronics International is the source for Ameritron linear amplifiers as well as other amateur related products and repair service

Live spots from DXlite - Live dx spots using a world map and google map interface by 5B5WN

Norfolk Fire and Rescue - Live dispatch audio from Norfolk Fire and Rescue by www.hrconnect.com

Telstar Electronics - Makers of VoiceMax Transceiver Speech Processor. Linear amplifier production has been discontinued.

Spiderbeam antennas  ^pop - High Performance Lightweight Antennas. The spider beam is a full size lightweight tribander yagi for 20/15/10m, made from fiberglass and wire. It has been specially developed as a highly efficient antenna for dx-pedition and portable use.

Low Power Radio Modules - Low power radio modules - supplying rf modules, rf transceivers, radiometrix transmitters receivers, low power radio modules, scada, frequency hopping, 900 mhz, wireless data transmission, data telemetry, gps modules & receivers and more

Albuquerque Transmitter Hunting - An active group of Amateur Radio operators who locate hidden transmitters for fun and in times of need, such as determining the source of interference to local repeater systems or individuals who use the Amateur Radio bands illegally.

G7IZU Radio Reflection Detection Page - Meteor Shower, Aurora, Sporadic-E and Solar Flares detected using Radio Signal Reflection, by Andy Smith, G7IZU. Live waterfall displays from three receivers, live Es propagation maps.

FT-817 AFSK Cable - Pc sound card interface for PSK31 MFSK Baudot for the yaesu FT-817

Ham Radio Repair - N4DA - - The Radio Doctor provides complete repair services for all major brands of HF Transceivers and HF Amplifiers, including vintage radios GA USA

TS780 - TrunkStar780%u2122 is a high-performance, full-featured software package for Uniden® BC780XLT trunking scanner. Data management and operational control over the BC780XLT is provided.

TS785D - TrunkStar785D is a high-performance, full-featured software package for Uniden® BC785D, BC250D, BC796D and BC296D digital trunking scanners. Data management, operational control and spectrum analysis features are provided.

50Mhz amplifier GS35b by OZ1DPR - A 6 meters band amplifier width schematics

Receive only processing equipment - One of our most popular products, receiving preamplifiers are used for achieving top signal band performance in competition operating, low noise longwave reception, repeater applications into the UHF region, or lab use

Cellular Phone Interference - Cellular Phone Interference and 800 MHz Public Safety Radio Systems: An Unforeseen and Dangerous Problem

iCOM PCR 1000 Web Resource Page - ICOM PCR 1000 user website with tips, manuals, hacks and frequency list for this no-interface radio receiver.