homebrew atu

Homebrewing Coils - Homebrewing antennas, homebrewing your own Coils ny K0BG

Broadband Dipole 2MHz o 30MHz with no ATU - A broadband travelling wave dipole for HF bands, whose VSWR is less than 2:1 from 3 to 15 MHz and does not exceed 2.6 to 1 from 2.3 to at least 30 MHz

Homebrew G5RV All Bander - Article about homebrewing a G5RV antenna by KC6CFF

Homemade screwdriver antenna - Pictures and schematic to homebrew a screwdriver antenna by PH0RMH in Dutch

Twoband-Antenna for HT - Homebrew a 2m/70cm portable or mobile whip antenna for your HT or mobile radio

QRP Antenna Tuner for 20 m - A small antenna tuner for 14 MHz

Automatic Antenna Tuners & Couplers - by Adam M. Farson VA7OJ/AB4OJ

Pi-filter ATU for Beams and Verticals - A ATU for beam and vertical antennas by PA0FRI

Tips for Automatic Antenna Tuners - Useful tips for the use of automatic ATUs

Build a 2 Meter Vertical Antenna - Homebrew a 2 meter 1/4 wave vertical antenna for the 146 mHz ham radio band

Rybakov 806 Multiband Antenna - Multiband no trap no gap antenna. This Antenna is a small wonder, easy to build and allow you to work all HF spectrum with your TRX and it's internal ATU.

Homebrew WiFi Antennas - Lincomatic's Homebrew WiFi Antennae, Cantenna, Toothpick Monopole, Patch Antenna, BiQuad, collinear wifi antenna all in one page

VU2UKR HAM Radio Station - HAM Radio India Yagi Beam CW QRP SSB QUAD DX circuits sound card Transceiver Morse HF VHF Antenna Satellites Amateur Club Station Operators Licence Exam ASOC Guide Digital Mode Equipment Transmitter Experiments Project schematics Beacon dx HAMSAT VUSAT Satellite Emergency communication Information Homebrew QRP Kits

Analyzing UHF signals using FFT programs - With spectrum analysis of beacon signals, it's possible to see features relating to various propagation phenomonen.

New York Repeater Directory - It origionally included NYC Metro and Long Island, but has expanded to cover all of eastern New York as well. Future plans include expanding to cover all of New York state. The listings are a reflection of each repeater's true status, regardless of their coordination

Interface for Yaesu VX-2 - DG6RBP USB-Programming Interface for Yaesu VX-2

Global Frequency Database - Frequencies from all over the world. 25000+ total records, 4600+ records feature exact GPS locations.

Nature of Source of Power in Amplifiers - On the Nature of the Source of Power in Class-B and -C RF A mplifiers by W2DU

Homemade HF +50MHz Antenna tuner - HF/6M antenna tuner preselector and antenna switcher project by ON6MU

CDG2000 by OZ9FW - OZ9FW CDG2000 High-end transceiver homebrew project

OZ3QY CDG2000 Transceiver - The CDG2000 is a high performance HF transceiver developed by G3KBB, G3OCQ and G3SBI. They have managed to design a high end transceiver that can compete with the most expensive ones on the market

N2CQR 20 meter portable DSB transceiver - Homebrewed transceiver for 20 meter originally born for 17 meters band

Homebrew 40m CW Transceiver - 7N3WVM homebrew project of a 3 W output CW transceiver on 7 MHz band

The Rock-Mite CW Kit - The Rock-Mite is a 40m CW kit offered by Small Wonder Labs . It features built-in keyer, direct conversion receiver with a crystal RF bandpass filter, 500 milliwatts of power, and switchable frequency offsets to work around QRM

ON5KQ VNA-project - Hamradio homebrew VNA project from begium amateur radio station ON5KQ