communication

13 cm Helix Antenna  ^pop - Here is the design of a 2.4 GHz antenna that is ideal for amateur satellite communications. This antenna is easy to assemble because the design itself tolerates inaccuracies in the construction without really affecting performance.

Russian robinson club - Club Russian Robinson for amateurs interested in radio communication from polar stations, islands and maritime mobile objects RRC founded in 1993. Goals are consolidation of radio amateurs, operating now or operated in the past on islands, drift-ice research, arctic and marine stations, signing their personal callsigns or as participants of DX-peditions.

Energy line 2000 - Solar power, biodiesel fuels, wind energy, streaming video, articles, news, and more. Renewable Energy and Emergency Communications by Terry McGleish

DG7BBU blog - Ham radio, communications and computing at christopher's blog

Bytes and hertz - A blog devoted to the hobby of Amateur Radio (Ham Radio). The radio amateurs of the world contribute to public service and emergency communications. This blog hopefully will reflect that fact!

KD5QEL hurricane katrina and rita info - Hurricanes Katrina & Rita information from various sources. Compiled by KD5QEL Robin (New Orleans native) near Atlanta, GA. Not for chitchat--only for communications info.

BayCountyScanner.org - Listen to public service communications within Bay County, Michigan, USA.

WiNRADiO Communications - WiNRADiO Communications manufacture radio communications equipment for a very wide range of applications. Our customers include professional communications radio users in government, military, security, surveillance, spectrum monitoring organizations, telecommunications, industry, as well as radio and computer enthusiasts.

CAL-AV Labs, Inc. - Cal-av labs, inc. (formerly california avionics laboratories, inc.) manufactures electronic instruments and systems for research and industry. we specialize in radio communications and research/electronic test products. Amateur radio yagi antennas, rotary dipoles, baluns, morse keys.

Donner's digital interface - Donner's digital interface sales. Interface that will let you connect your amateur radio and computer to receive digital modes of communication like PSK31, RTTY, CW, SSTV Also have rig control interfaces.

National RF, Inc. - National rf provides consulting engineer services, and manufactures direction finding antennas, test equipment, communications receiving equipment and adjuncts, satellite antennas, voice amplification and audio equipment.

Better Metal LLC - Manufacturing distributor of infrastructure products for the telecommunications industry; antenna mounts, ice bridge, cable ladder, ground bars, weatherproofing, exothermic, safety equipment.

KJ6Y's Communications service co - Antennas and Towers for Amateur Radio Specializing in installation and maintenance of Tri-Ex and US Towers

AN Wireless Tower Company - AN Wireless is a manufacturer and distributor of Self Supporting Tower Systems for Wireless Communications, Wireless Internet, Wireless Networking, Microwave, Paging, Broadcast, Two-Way Radio and Amateur Radio.

Clover - Clover technical specifications, digital communications mode that conveys 8-bit digital data over narrow-band high-frequency radio.

Psk31 - PSK31 is a digital communications mode which is intended for live keyboard-to-keyboard conversations, similar to radioteletype. Its data rate is 31.25 bauds (about 50 word-per-minute), and its narrow bandwidth (approximately 60 Hz at -26 dB) reduces its susceptibility to noise.

JT65 - JT65 is a digital protocol intended for Amateur Radio communication with extremely weak signals. It was designed to optimize Earth-Moon-Earth (EME) contacts on the VHF bands, and conforms efficiently to the established standards and procedures for such QSOs.

DDS Data-Communicatie - Dds data- communication Data and Tele-Communication Solutions: UMTS GSM GPRS Telemetry programmers Adeunis RF systems, antennas, radio transmission modules, oscilloscopes GPS and coax cables dealer in Holland

Burnaby Radio Communications - Amateur radio dealer, scanners and accesories Burnaby, BC, Canada

Hardsoft products - Hardsoft products home page: telefonia, telecommunications, radio, computers, base

Ciro Mazzoni - From 1973 we work in the communication system on HF, VHF, UHF, SHF for P.M.R., OM and broadcasting.

Novelradio - PMR and commercial radio communication systems dealer

Advantage Communications - Vertex standard, yaesu, maxon, ritron, and jobcom portable and mobile radio sales and service.

Kent Communications Inc. - Our goal is to provide the Highest Quality Products and Competent Technical Services at very competitive rates to the Telecommunications and Recreational Industries.

SatTrack Suite - Satellite Tracking and Orbit Propagation, Reports and Mission Planning Products, Pass Scheduling and Orbit Event Analysis, Dynamic Communications Link Modeling, 3-D Visualization of Complex Scenarios User Defined Regions and Contours, Constellation and Formation Flying Support, Global Positioning System Coverage