tube 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

IZ8DWG Onofrio - Includes Amplifier, antenna tuner, quad, yagi, rotators project in italian

VK2FLR DX Sounds Archive - Real Audio files containing interesting examples of VHF DX propagation from Sydney, Australia

Engineered Composites Ltd - Fibreglass tubes, structural profiles and other composite materials all available from stock

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

Ham Radio & DSP - Related histories, facts and opinions by EA2BAJ, includes example of PSK MT63 QPSK audio files in wav file

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

ATV Compendium - by Mike Wooding, G6IQM, British Amateur Television Club

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

Finite difference program - This software is able to calculate the properties of odd shaped transmission lines. Particularly good in valve amplifier design, for aiding the design of transmission line resonators.

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

Push pull 2m amplifier - This shows an unsuccesful attempt to build a push pull 2 m amplifier, with the tubes in grounded screen.

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

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

Homebrew projects by dl5dbm  ^pop Priority listing - KW,2-meter,6-meter,antennas,amplifiers,preamps,powersupplys, and more