ground system

Short Vertical Antennas and Ground Systems  ^pop - This article describes how an effective ground system can be produced for a short vertical antenna.

OH2GI Ham System - All-mode contesting and logging software system designed primarily for on-line operation of HF digital and CW radio stations through Terminal Node Controllers (TNC)

The National Traffic System - ARRL National Traffic System for routing formal written message traffic

MARS - The Metropolitan Amateur Repeater System

Greater Louisville Hamfest - Held at the Bullet County Fairgrounds, Ham radio equipment, computers, flea market, tailgating, Free RV parking, Ham license testing, forms

Delta X-Ray Antennas - Antenna Manufacturer HF Delta Loops and VHF/UHF Ground Planes

Q-PAR Microwave Antennas - The company (founded in 1973) excels in the research, design, development and manufacture of microwave antenna systems & components. Our range includes horn, reflector, sinuous, spiral, LPDA, helical antennas, etc; antenna positioners, and many bespoke components.

Poly Phaser - Data, RF, video protectors coax combiner protectors, grounding Items

Link Communications - Repeater and linking control systems

FF Systems - manufactures and sells repeater controller products and accessories

Heights Tower Systems  ^pop - Telescopic towers, platforms and accessories

Ritron - Vhf Ufh transceivers, repeaters, Telemetry Scada Systems and accessories

Olivia Modes - Olivia is a family of MFSK modes with a high redundancy Forward Error Correction system similar to MT63. General description and protocol information by w1hkj

Satellite Tutorial - A good starting point to setup an Amateur Radio Satellite receiving system.

Aurora Status from Alaska - The aurora today, ground view from alaska

National Weather Service - Some little known facts about the NOAA Weather Radio system

Antenna Systems & Supplies - Antennas, cables, Grounding Equipment, shelters and towers.

RXClus - RXCLUS is a free amateur radio software especially designed for the DX'ers and SWL's wanting to receive the informations transmitted by packet radio on the DX-cluster system. It supports also telnet protocol.

GcmWin : Great Circle Map  ^pop - GCM is a freeware great circle map plotting software for windows, you can choose colours, scale, meridians, fields and or squares from the maidenhead locator system.

Elmer - Macintosh shareware, contains the full pool of questions for each of the five exams, and creates sample tests that will vary each time you take them and it will grade your exam.

Macintosh SSTV Shareware - SSTV software is now available for the Macintosh computers, for the first time.

Audiocoreder - Audiocorder is a VOX program which allows your Macintosh to act as an audio recorder

Ipmulse Systems - Impulse Systems offers several innovating products: F6FBB Language Editor and WinPack CoDec

AREPS propagation programs - Collection of various propagation software by Space and Naval Warfare Systems Center, San Diego, Atmospheric Propagation Branch

EMI Calculator - Does your Amateur Radio system comply to the EMI rules ? (German values implemented)