common mode

A Potpourri of 160-Meter Verticals - A potpourri of 160-Meter vertical antennas and modeling issues, inverted-L, 3-element parasitic array, 1/4-wavelength monopole

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

Coax Monopole antenna - OE1MWW monopole antenna made with common RG 58 or RG 213 coaxial cable

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.

K4SBA The South Brevard Amateur Radio Club - The South Brevard Amateur Radio Club is based in the Melbourne, Florida area and provides volunteer communications services to the public and provides a common organization for amateur radio operators in the south Brevard County area to operate under.

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

K6MVR MVRC Radio Club - The Mt.Vaca Radio Club (Call sign K6MVR ) owns and operates repeater systems in and around Sacramento, California. The systems provide reliable coverage for mobile stations throughout the Sacramento Valley region and beyond to Modesto, Chico, the Sierras, and parts of the Bay Area.

The Kenwood TS-850S 13 Years Later - Must modern HF transceivers be treated as black box appliances? VE1FA doesn’t think so, and his experience with the Kenwood TS-850SAT bears him out.

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

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

cocoaModem - CocoaModem is an opensource MacOS X 10.4 application which implements modems (modulator-demodulators) for RTTY PSK MFSK Hellschreiber CW SITOR HF-FAX provided by W7AY

Grig Radio Control - Grig is a freeware simple Ham Radio control (CAT) program based on the Ham Radio Control Libraries (Hamlib). It is intended to be highly generic presenting the user to the same graphical user interface regardless of which radio is being controlled. Grig supports the most commonly used CAT commands that are implemented by Hamlib, and integrates well with other ham radio programs like Xlog and gMFSK. Grig has been developed on Linux, but has been ported on Mac and Windows OS.

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.

Coax cable data - Characteristics of commonly used transmission lines

Common Coax Data - A table summarizing common coax cables features

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