rf amplifier design

80m 4 element delta loop antenna - A four element delta loop antenna for the 80 meter band providing a forward gain of 6 dBi by F5VKM

K8CU Log Periodic Antenna - Plans, photos, electrical and mechanical design for this HF Log periodic antenna.

Stacked Yagi Antennas - Constructing and designing full size, single band stacked yagi antenna arrays

WC2L Web Cluster - An AR-Cluster powered web interface to packet cluster by WC2L

Summits on the Air (SOTA) - Summits on the Air is an exciting new award scheme for radio amateurs which encourages operation in mountainous and wilderness areas. The sceme is designed to grow into an international awards.

Radio Club of thessaloniki - Club for Radio enthusiasts in Thessaloniki - Macedonia - Greece

SATEDU PROJECT - SATEDU project, a 20Kg class microsatellite designed and managed by AMSAT-France, partially developped and built by students

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

Balun Designs LLC - Balun Designs wind high quality baluns and ununs for Amateur Radio and commercial applications based on the researched and tested designs of Dr. Jerry Sevick, W2FMI.

WaveSources - RF and microwave oscillators and synthesizers to 10 Ghz

Six Meters FAQ - Faqs on six meters band, designed to help encourage hams to use and enjoy this band

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

N9VV PSK31 Resources - Software, reference and reviews of computers interfaces for PSK31 operating mode

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.

HamGrids - Windows application that will allow you to perform calculations with the popular Maidenhead Grid Square system. This grid system is used worldwide by amateur radio operators for many aspects of ham radio.

TCalc - TCalc+ analyses the Noise and intermodulation performance of radio receiver front-ends.

FT100 SuperControl - CAT control and logging software project especially developed for the YAESU FT-100 transceiver. The program is based on the design of FT847-SuperControl.

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.

SDRMAXII - graphical user interface which communicates with QS1RServer.exe over three UDP ports. QS1RServer.exe controls the QS1R Versatile Radio Board (VERB), a Software Defined Radio developed and produced by Phil Covington

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

Analyzer2000  ^pop - Superfast analyzer for audio and radio signals

VoiceKeyExpress - Turns your PC's sound card into a powerful and versatile digital voice keyer. Commercial by n7qjp

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

1.5 to 30 Mhz RF Amplifier  ^pop - This high range amplifier is very small [SB200 size] Vacuum variable input and output caps as well input and output switching.

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.