500 watt

Valve Data Sheets - This web page has full data sheets for a number of commonly used valves. Most are Eimac and include the 2C39A, 3-500Z, 3-1000Z, 3CX1500A7, 3CPX5000A7, 3CX5000A7, YC156, 3CX15000B7, 4CX250B, 4CX250A, 4CX1000A, 4CX1500B, 4CX10000J etc. These are not avialable on Eimac's web site in full - only brief notes.

QSL Information Pages QIP for BCL - QSL Information Pages QIP for BC-DXers - more than 50000 qsl logs from more than 10000 BC-DX radio stations

Gibraltar - GARS - Gibraltar Amateur Radio Society

K1DWU links - K1DWU offers you over 4500+ verified links to other resources on the Internet, and every link is checked every week

MaCo Antennas - Maco Manufacturing, HF Antennas, gamma matches, cable assemblies, power supply, swr meters, watt meters

Valcom Fibreglass Whip Antennas - Manufacturer of Fibreglass Whip Antennas, Low and mediun Frequency, HF and VHF Antennas Specialized in the design and manufacturing of a full range of Beacon (MF), AM Broadcasting 540 - 1700 KHz, HF 1.7 to 30 MHz, VHF 30 to 156 MHz and UHF 200 to 500 MHz antennas.

Palstar - Receivers, Antenna Tuners and accessories, antenna analyzers, dummy loads, wattmeters, shortwave radio receivers, baluns, filters

OAK Hill - CW transceiver kits, qrp, frequency counters, qrp wattmeters

RMS international - RMS International, italian distributor of Alcava batteries and power supply, since 1975 manufacture power amplifiers, watt meters, antenna tuners, TVI filters and other accessories for hams and cb radio

Ameritron  ^pop - Manufacturer of amplifiers, antenna switches antenna Tuners, wattmeters and relay buffers, amplifier accessories, antennas and tubes and parts

Vectronics - Antennas, Filters, accessories, wattmeters, tuners and amplifiers.

Longwave Home Page - The World of Radio Below 500 kHz by the Longwave Club of America

W7FG Vintage Manuals - Over 5000 operator and service manuals for almost all radios

Heathkit SB-220 and SB-221 essential mod - Modifications to avoid damage when 3-500Z tubes fail.

Yaesu FTDX-5000 Manual Part 2 - Yaesu FTDX-5000 operating manual part 2

The Raymond Sarrio Company - Over 3500 radio and test equipment manuals, plus an batteries for two-way radios, laptops, and camcorders.

Control Software for AOR AR5000 - Full 32 bit multi-tasking multi-threaded control software for AOR AR5000

Scanner VHF-UHF monitoring - Scanner VHF-UHF software for monitoring VHF-UHF range by means of receiver ICOM IC-R8500.

Spectra - Accurate spectrum analyzer in the range 0 - 2500 Hz, makes an accurate FFT analysis of an audio signal coming from the soundcard

iHamRelay - iHamRelay offers you more than 2500 repeaters all across Europe and the possibility for you to join the community while sharing your own data

600 Watt HF Amplifier  ^pop - Schematics plans by K9GDT and all infos to build a 600 Watt HF Amplifier

70cm GS-23b Amplifier - 1500 watts amplifier for 70 cm band using GS23B /4CX1600U SVETLANA by LZ2US

130 Watt Dummy Load - Video, how to build a 130 Watt Dummy Load for HF amateur radio

40 meter 100 watt Transmitter - 40 meter transmitter by K9GDT

A 50 MHz MicroWattMeter - A design for a simple microwattmeter. Input range -75 dBm to + 5 dBm. Frequency range 2 to 50 MHz