40 windom

Multiband wire antennas and ATUs  ^pop - DC1YB experience on multiband wire antennas. In particular examine FD4 windom and G5RV antenna, considering noise levels and matching aspects. Author reviews also the usage of Automatic antenna tuners in TS-50 TS-480 and GC-3000

10 Meter Vertical Dipole - Homebrew a vertical dipole for 28 Mhz by N2UHC

Monster Quads - N6LF tells us about his monster two-element 40-meter quad, with bonus three elements on 20 and 15 meters.

K7HC Mega HexBeam - Pictures taken during the construction of a Hexbeam antenna for 30 and 40 meters

W3HH antenna for 40 meters - Pictures and plan to build a wire W3HH antenna for 7 Mhz.

Magnetic loop for 80-40 meters - Evolution of a project of a magnetic loop resonating from 80 to 40 meters

Bazooka antenna for 40 meters - A bazooka antenna project for the 7 Mhz by PD7MAA

W3DZZ for 40 and 80 meter - Home made w3dzz antenna for 40 and 80 meters band

40 meter 4-square antenna - A permanent working 40 meter system based on a 4-square antenna

PY6CJ 80/40 meters dipole - A center feed trapped dipole for 80 and 40 meter band in spanish

NVI 40 Meter Antenna Modeling - The idea of using a low mount dipole, enhanced with reflector wires directly beneath the dipole, on the ground, appears to be a very good approach to creating an NVI specific antenna for local HF operation.

The Hudson antenna - A vertical antenna for 80 and 40 meters project with lots of assembling pictures and plan by LU9DPD in spanish

40M 3 element beam - History project and dimensions of a 3 element yagi beam for 40 meters band

40-80 Dipole antenna - A 40 80 dipole antenna design by WA6ESC PDF File

Indoor multiband dipole - This indoor dipole is available in two version for 20-10 meters and 40-10 meters. EZNEC data files available by HB9MTN

An improved 40-80 double extended zepp - Article originally published in ARRL compendium by N6LF revisits the classic double extended Zepp to improve pattern and SWR bandwidth. The DEZepp is essentially two end-fed collinear dipoles.

AO-40 70cm Uplink Antenna - homebrew satellite antenna

1200Mhz 40elements YAGI - A table with element size and spacing for a 40 Elements yagi antenna for 1200 Mhz

Loma Pioneer Repeater Club - LPRC - The loma pioneer repeater club - lprc provides 2 meter vhf and 440 uhf amateur radio and emergency communication for the san francisco and monterey bay areas from a repeater on mt loma prieta. aprs digipeater available.

Calnet Repeater Group - Calnet a multi repeater amateur radio system serving most of California and parts of Nevada. The Calnet system consists of numerous fulltime linked 440 MHz repeaters connecting San Diego to San Francisco and Lake Tahoe.

WPI Wireless Association - The Worcester Polytechnic Institute Wireless Association has its roots in the beginnings of Amateur Radio. The group was first founded in October of 1909, by Oliver B. Jacobs and a group of 40 other men.

TLDetails - Transmission Line Details. This utility program shows the impedance and SWR at both ends of a transmission line and the details of power loss in the line. It includes characteristics for over 40 built-in line types. You can modify these values to see how small changes affect the results or to specify custom lines. All program inputs may be changed directly or you can use spin buttons to make the changes. If you are using a moderately fast computer you can hold down a spinner and "watch the movie" on the charts as the results are recomputed. By AC6LA

RUMtrol746PRO - This program is used for the ICOM IC-746PRO, IC-7400.You can edit all the setting and write it to file for later use. Runs on Windows Linux and MacOSx

RUMLog - RUMlog is a short-wave logging and QSL handling/printing tool for MacOSX RUMlog is available with an interface for transceiver control. Supporting Kenwood, Elecraft and ICOM. (IC-7400/IC746PRO, IC-7000 and IC-706)

Codec 2 - Codec2 is an open source low bit rate speech codec designed for communications quality speech at around 2400 bit/s. Applications include low bandwidth HF/VHF digital radio.