power amp

IZ7ATH Projects  ^pop - Antennas, Keyer, amplifier, transverter, baluns

Sommerkamp users page - Info-page for Sommerkamp radio's by DO-X germany

Central New Hampshire Amateur Radio Club - ARRL special service club

Mt. Airy VHF Radio Club - "Better known as the ""Pack Rats"" W3CCX, Southampton PA"

EA7FTR Fran - Manager of ea7ftr ed7ftr an7ftr and stamps collection

Gisela Dierking NF/HF-Technik Germany - Many interessting accessories, like unversal audiofilter, Mixer interface for sound card, highvoltage powersupply,accessories for 706, hamradio vacation, and more

RF Applications, Inc. - Specialized in RF Power Measurement Systems and other devices that make operating radio transmitting stations safer and easier.

XMATCH Antenna Tuner - Ham Radio Antenna Tuners--Full Legal Power--Patented Circuit--Outstanding Efficiency and Power Capability

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

Radio History - Here you can find examples of old-time radio during its developmental period. The material consists of first-hand memories, gleanings from radio archives and other sources

Digital Signals Sounds - Several files with examples of sounds from digital radio modes on short wave. PSK, RTTY Hellschreiber MFSK FSK Sitor

Hellschreiber beacon project - This web site describes a low power beacon system to be used for propagation and performance tests on the lower bands. The beacon offers CW (on-off keyed) modes and FSK modes; the traditional Morse ID mode, and Feld-Hell, another highly noise immune CW mode.

Packet Radio User's Group - Japanes Packet radio club with link to Jouban TCP/IP network one of regional network of AMPRnet

KQ0RP Iowa QRP Club - Club formed to promote amateur radio low power operation, to hone operating skills, to improve building skills, and to introduce the hobby to prospective new amateur radio operators

S marks the spot - Forecasting powerful solar explosions several days in advance now be possible

Andrews Communications Systems - Australian dealer, HF linear amplifiers, power supplies, baluns, HF UHF yagis and verticals including multiband HF verticals.

QSL-Shop.com - Premium quality QSL cards, with samples, preview and on-line order

Prime Time Shortwave  ^updated Priority listing - The latest shortwave broadcast schedules with listings by time, country and frequency plus a DX program guide.

WACARS  ^pop - The only ACARS software to feature in-line message decoding and aircraft tracking. ACARS Reception and Decoding Software For Windows

Frequency Manager - Database system with 60000 frequencies, powerfull 3D MUF/LUF-propagtion software and full copntrol of several receivers

Commander  ^{updated  pop} - A free application that controls up to 4 Alinco, Elecraft, FlexRadio, Icom, JST, Kachina, Kenwood, TenTec, or Yaesu transceivers, switching between them manually or automatically based on frequency, and displaying frequency-dependent settings for devices like tuners and amplifiers; includes a bandspread, and supports transverters, frequency and mode tracking by an independent transceiver or receiver, SDR-based panadaptors, and SO2R switching with microHam or OTRSP-compliant devices.

WB0NNI Home Brew HF Amps and Tutorials  ^pop Priority listing - Tutorials and other information on designing and building hf amplifiers. Includes tube data and amplifier projects.

100W HF QRO linear amplifier - Based on Motorola MRF454, schematics and component list

Fuse Those Batteries - The proper way to fuse the 12 VDC power cable between a battery and a mobile radio.

SSB and CW Filter - A pdf file with schematics of an ssb and cw filter AF amplifier