operating systems

G7LRR Low Band Antennas - G7LRR Amateur Radio Site,160m Helical Antenna

The Battle Creek Special Antenna - This antenna is often mentioned as secret weapon for LF bands (160, 80 & 40 m) operating at many DXpeditions. It is not commercially available but may be loaned to the expedition staff. It was brought to Ham Radio scene by George Guerin, K8GG, Charlie Dewey, W0CD and George Taft, W8UVZ

Antenna Impedance measurement - When experimenting on an antenna it's often important to determine its feedpoint impedance at various frequencies across the operating band. It's easy enough to measure SWR, but sometimes we need to know more detail than this

Quad antenna calculator - To get the dimensions for your quad, all you have to do is type in the center frequency of the range where you talk, or the frequency you use most and then click the Calculate button.

Collins Radio Association - This site was established to encourage hams, especially the newcomer, to share the enjoyment that comes from owning and operating Collins

Freebanders antenna systems - Yagi Quad's and Verticals simple explanations about freebanders antenna systems

PJ2T Caribbean Contesting Consortium - A contest club dedicated to fun, international friendship, and advancement of the contesting art through superior operating technique and maximum application of technology.

Tennessee Contest Group - The Tennessee Contest Group (a.k.a. TCG) is a group of amateur radio operators (hams) who enjoy operating in competitive radio sporting events or "contests."

KH6 - Hawaii Sea Q Maui - Hawaii, maui, Operating only as a ham radio station rental. Located in a private home, accommodating only ham operators. Two towers, two tribanders, one 40 2 el, one WARC. A FT1000MP, TS-940S, FT100, HF only no 6 mtrs No linear operations.

The Texas DX Society - The Texas DX Society is an organization of radio amateurs in Houston, Texas who have a primary interest in DX chasing and contest operating on HF, VHF, and UHF.

Comtek Systems - COMTEK uses state of the art design and technology to offer every ham the most advanced antenna systems possible.

RAM Mounting Systems, Inc. - Ram mounting systems is a world leader for design and manufacturing of mounting applications. ram mounts offer more than 900 interchangeable components for unlimited uses and configurations.

RT Systems - Radio Programming - Windows programming software for Icom and Yaesu amateur radios and scanners and receivers by RT Systems. Produce radio programming cables for Yaesu Icom Kenwood radios

DEHN, Inc. Surge & Lightning Protection Priority listing - Offering transient voltage surge suppressor, TVSS, patch cables, surge arresters, surge protectors for lightning and power surge protection for electrical equipment, IT networks, communication systems, data lines, relay systems and solid state controllers.

Voice Repeater Basics - Repeater operating is one of the most popular facets of amateur radio

AO-27 Satellite page - About operating the AO-27 satellite

Cooke International - Original Test Equipment Operating Service Manuals.

DXSpider - DX Cluster - DXSpider is a clone of PacketCluster software that runs under several operating systems including Linux and Windows compatible with the AK1A program

CLX Packet Cluster - CLX is a clone of AK1A PacketCluster that runs under the Linux operating system. Freeware packet cluster server software

Aether - Aether is an ham radio logging for the Mac. Aether gives hams logging software that is as powerful, easy to use, and good looking as the operating system it runs on. Designed from the ground-up using Apple’s Cocoa, Aether supports the latest Mac OS X technologies, and provides the experience that Mac users expect.

PSK08 - G4JNT - PSK08 Software for the 56002EVM. PSK08 is a data communications mode identical in operation to PSK31, but operating at one quarter the speed, ie. approximately 8 symbols per second.

Black Cat CW Keyer - Black Cat CW Keyer for Macintosh lets you send morse code from your computer. You can type out the text to be sent (immediately or buffered) as well as create and send from one key

MacTNC - MacTNC is simple, configurable terminal software used by amateur (ham) radio operators to control a TNC (terminal node controller). MacTNC performs most of the same functions of other terminal software, but includes buttons for standard commands, and allows the user to configure additional buttons for special purposes. MacTNC works only user Mac OS X because it relies on Unix components of the current operating system.

RT Systems - Windows Programming Software by RT Systems for Amateur Radios and Receivers

Using ferrite for interference suppression - Excellent guide to using ferrite cores for interference suppression. Understanding and Solving RF Interference and Noise Problems by Jim Brown K9YC Audio Systems Group, Inc. PDF File