ros mode

Single support gain antennas for 80-160 meters - On 80 and 160 meters an antenna with modest gain and good front-to-back (F/B) ratio, along with a steerable pattern, can be very effective for contesting.

A Horizontal loop for 80 meter dx - This 80-meter quad loop system requires only supports of modest height—a better single-element antenna may be hard to find by VE2CV

The Crossed-Field Antenna - Please be aware this article introduces a completely new concept in antenna theory. In fact, this is considered the most important development relative to antennas in this century. It is so pervasive that a series of articles are required to cover the concept and its applications to the depth and extent it deserves. This is the first publication about the Crossed-Field Antenna

Axial-Mode Helical Antennas - Turn Helical Antennas Over Perfect Ground and Modeling Helices in NEC-2

Coaxial-feed axiam mode helical antenna - Coaxial-feed axial mode hemispherical antenna is studied experimentally and theoretically

Remotely-tuned loop antenna for LW and MW - This article describes how to build a loop antenna for low frequency (LF) and medium wave (MW) reception with remote-controlled tuning. The antenna is extremely sensitive and can be built mostly from parts from old radios and tape recorders. Like all loop antennas, it is highly directional, which allows you to null out unwanted noise sources.

The mark 2 Crossfield Antenna - The mark 2 Crossfield Antenna was described in Sprat 76 by Alec, GD3HQR

PSK 31 Contest Calendar - PSK31 and other digital modes contest calendar mantained at the podxs 070 club

The Considerate Opertator's Frequency Guide - An ARRL guide to where on the HF bands various modes and activities are generally found.

W1AF - Harvard Wireless Club - Harvard wireless club, harvard's amateur radio or ham radio club. founded in 1909. welcome to harvard affiliates, alumni, prospective students, and their parents, as well recent contacts. information about club getting started radio. confirming contacts qsl. flea market. history.

K2GQ Roseland Amateur Radio Club

ECS ARC - Emergency Communications Service ARC was formed and established in 1964, at the Queens Chapter of the American Red Cross

European PSK Club - The European PSK Club, or EPC for short, is an informal club of amateur radio operators dedicated to maintaining high levels of amateur radio communications on PSK modes. Its purpose is to promote activity and good operating practice on the PSK modes on all amateur bands

Digital mode club (DMC) - Digital Modes Club(DMC) is for all licensed HAM operators and SWL's who likes the digital modes. It's free lifetime membership.

European PSK Club Priority listing - The European Phase Shift Keying Club (EPC) was to promote an interest in Amateur Radio to sponsor a series of contests, awards and badges based on the administrative geography of European and other countries by using the PSK mode(s).

Digital QSO Club - The Digital QSO Amateur Radio Club DQSO is an informal club of amateur radio operators active use digital modes on all bands. Membership is free for any licensed radio amateurs.

Digi Mode Sound Files - Mp3 and wav files linked from this page are intended to help your understanding of what the different digital modes sound like

Unified Microsystems - W9XT contest card DVK Digital Voice Keyer, morse keyers CW memory keyer, beacon CQ IDer, USB interfaces and more for ham radio operators

N1EQ Mike Nadeau Repair Service - Specialize in servicing modern HF/VHF/UHF multimode transceivers and receivers Icom, Kenwood, Yaesu, and a few others

RUMPed - RUMped is a logging tool for short wave for the MAC under OSX. It is not designed for the daily QSOs. Currently RUMped supports a DX-pedition mode, some major contests and a general contest mode for unsupported contests.

Fldigi - Freeware Digital modem program for Linux, Free-BSD, OS X, Windows XP, W2K, and Vista. Support several modes and is fully multi platform application by W1HKJ

QuickMix - Freeware windows program that allows you to store configuration of your audio mixer in a settings file, and to restore the mixer to that state whenever you want. Useful for digital mode operations where different dsp programs may require different audio in and out settings.

A LF power amplifier - A Low Frequency (LF) RF Power Amplifier by VK5BR it operates in a linear mode and can handle CW, AM and SSB.

AVR Beacon Keyer Project - Description of an HF beacon keyer with telemetry. What makes the keyer rather different is its versatility - it is a multi-mode unit, with ASK and FSK modulation, sending Feld-Hell and Morse on command.

Mac to transceiver interfaces - This article illustrate different ways to interconnect a macintosh with a transceiver in order to remote control radios and operate digital modes by Kok Chen, W7AY