tube amp

Cross-Field-Antenne - CFA and EH Antenna samples in german

Antique Radio Schematics - Specializes in antique radio schematics, circuit diagrams and service data for vintage tube radios. Carries information for American, Canadian and European antique radios.

AMPR Access in North Italy - Multiservice server accessible from either PacketRadio network and Internet

The Boatanchor Classifieds - A free service dedicated to enthusiasts of fine tube gear from Amateur Radio's classic era.

Microwave audio samples - 10GHz Rainscatter audio files

Mutek - Transverters, amplifiers and low noise preamplifiers

TE Systems - Manuf RF power amplifiers wideband+narrowband for Commercial, Defense, OEM and amatuer markets. Also low-noise rf amplifiers

Electron Tubes - Electron tubes and vacuum tubes for industry

Ham.shineline.it - Maps of Italy for ui-view and many APRS progrmams and links in italian

OZ9AAR Carsten - EME, Amplifiers and projects

MFSK16 Reference Documents - Performance Reports, Sound Samples and specifications of MFSK mode

K4SET, Soundcard Digital, MFSK - "MFSK and the SoundCard Digital Software Revolution"" by K4SET and WD4HVA"

Amateur Packet Radio Gateways - Amateur Packet Radio Gateways by dl1eis

ND2X QRO via Russia - Data about surplus Russian tubes and examples of PA's which use them from HAMs

RigPix Database - Images and technical details of thousands of transceivers, cb radios, rotators, rf amplifiers scanners and accessories, by SM0OFV

Ten-Tec Jupiter CW copying and keyboard transmit - Part 2 - Ten-Tec Jupiter CW copying and keyboard transmit

Duracell DR36 battery to the FT 817 - The Duracell DR 36 laptop battery can be easily find and supplies 12 volts X 4 amperes. The main advantages on this system are, the weight, size, quick battery changing and no stress to the FT 817 power connector by PY1AHD

EB8BEE Victor - Metbee Station NOAA and METEOR Meteorological Satellite Pictures and Marine RF Power Amplifier

Cool QSL - QSL print service - QSL print service online from poland with lots of printed card samples

Going Postal Ham Radio T-shirts Priority listing - Going Postal produces unique and colorful t-shirts using postage stamps featuring ham radio or electronics themes.

SRL QuickSilver QS1R VERB - The QS1R VERB is the most advanced open source digital down conversion (DDC) receiver board on the market. It features a Linear Technologies LTC2208 16 bit, 130 MSPS Analog Digital Converter (ADC) and an Altera EP3C16 Cyclone III FPGA. Connectivity to the PC is through a high speed USB 2.0 interface. QS1R covers 15 kHz through 55 MHz in its standard configuration and can be used in undersampling applications to 300+ MHz.

Freq 51 - Program samples the input, performs an FFT, and graphs the output

WV7U - Hank's Amp Pages - WV7U YC156 and 3CPX800 amplifier projects. See pictures, schematics, test data, links, and more!

How modify a CB linear to use in HF band  ^pop - how to modify a Cb linear amplifier to use in HAm HF band

K8CU Technical Topics - Well documented Amateur Radio HF/VHF antenna projects, high power Russian GS35B RF amplifiers, mobile RFI solutions, related accessories, vintage radios, Six meter equipment, and useful techniques by K8CU are inside.