homebrew atu

40/80 Trap Dipole Design - An home made trapped dipole antenna for 40 and 60 meters band by 2E0HTS

Helix antenna for 435MHz - homebrew an helix antenna for 435 MHz by VE2ZAZ

Techlib.com Antennas - Introduction to homebrewing antenna, for AM FM band reception

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

EME stackable 9el 144MHz LFA Yagi - High Gain Low Noise 9el 144MHZ LFA Yagi. Flat SWR and no matching required. Very low temperature see lowest Ta on VE7BQH list ofr this size!

EME Low Noise 14 elements Yagi - Ideal for EME with a Sky Temperature never seen at this boom length. Amazing pattern and flat SWR. 50 Ohm with no matching required.

Some thoughts about JT65 - SM2CEW article on JT65 Deep Search feature

The Ionosphere - The Ionosphere (simplified) by WB8IMY, an useful article for the HF novice

Yaesu FT-450 Manual - FT-450 Operation Manual

Amateur Radio Miniature Rigs - Article abuot Minitature rigs, basics common features and common problems of Icom IC-7000 IC-7200, Yaesu FT-100, ICOM IC-706, Kenwood TS50S, SGC2020, Kenwood TS-480, Yaesu FT-450 by K0BG

Ten-Tec Jupiter - Features, functions, a howto and opinions by Jason Buchanan - N1SU

CW on the Jupiter 538 - Ten-Tec TV presents a short live demonstration of the new CW decode and transmit features on the Jupiter transceiver

Old 813 homebrew Amp - Restore an old 813 homebrew Amp with power supply from recycled parts

20 W linear amplifer for 2 meters band - A basic VHF power amplifier suitable for 2M (144-146 Mhz) the output power vary from 3 to 25 Watts By VU2RAR

Control unit for receive audio - A master control unit for receive audio

Homebrew 50 Mhz Beacon - DIY beacon for six meters band by K9MU

K7NWS 10 Meter Beacon Project - The K7NWS beacon is an entirely homebrew affair. The transmitter outputs approximately 1 watt at 28.265 MHz.

Frequency Counter project  ^updated - Circuit and construction instruction designed by Mani VU2ITI

SQ2OMC HF Transceiver Priority listing - Description of the homebrew shortwave multiband SSB transceiver, that covers 0.1 - 30MHz. made by SQ2OMC

Homebrew transceivers collection Priority listing - Collection of homebrew transceivers made by radio amateurs, with a short description and photos.

QRP Wattmeter - G4FON homebrewed QRP Wattmeter

High current power supply for rigs - High current universal supply for rigs, project article by VU3NSH

20m CW Transceiver - Homebrew 20m CW transceiver by MINOWA, Makoto 7N3WVM

Homebrew Ham Bands Receiver - This home-brew 14 tube HF ham bands receiver was built by an unknown amateur radio (ham) operator

NB6M 10 Homebrew Receiver and Keying - Schematic of a homebrew receiver and keying