40 metre

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

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

TLV40m antenna - Top Loaded vertical antenna for 40m Band with elevated radials

Top loaded vertical - Vertical Antenna for 40m Band with elevated Radials Top Load is a Mesh 2 x 1 meter (Netz 2x1m) enamelled wire 0.5 mm diameter (CuL 0,5mm)

Portable dipole for 40 Meters band - Pictures and swr reports for a portable dipole antenna for 40 meters band in german

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

Build a hanging dipole for 2 metres - Described here is a simple omni-directional, vertically-polarized dipole for two meters. Made from coaxial cable, it can be rolled up and stored in a small container

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

Contest University - After a year of preparation, 150 students and 11 professors participated in 10 hours of intense Contesting instruction covering some 22 topics, with over 400 pages of text

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.

Free Web Receivers from UK - Up to 3 free to tune receivers based in Bedfordshire England, Ten Tec RX320D, Yaesu FT-840 and Icom PCR-100

Yaesu FT-847 Video - A yaesu ft-847 on 80 metre band (3 mhz) a video provided at YouTube

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.

40 meter QRP Transceiver - This semi-homebrew QRP (low power) CW transceiver is based on the ARK-40 transceiver kit, by S&S Engineering. With its built-in CW keyer and 5 watts of power, the basic ARK-40 transceiver is an outstanding 40 meter CW performer