lightning protection sys

Vertical Radial Ground Systems - Tom, K1JJ on radial ground system applied to 160 m vertical array

Radio Antenna System Evaluator Site - This JavaScript program evaluates the performance of your cb or ham radio antenna system, computing the consequences of SWR and feedline loss.

G5RV Antenna Revisited - GR5V characteristics and construction details PDF file

QSY Society Amateur Radio Club - The club is promoting awareness of Henry Hudson's 400th anniversary voyage of discovery, as well as encouraging others to try amateur radio and foster goodwill.

Southeastern Asterisk Radio Networks - Interoperability solutions via Asterisk based RF Gateways - Southeastern Asterisk Radio Network (SEARN) and the Southeastern Asterisk Amateur Radio Netwok (SEAARN) are designed for the purpose of developing interoperability capabilities amongst diverse communications systems. Digital Amateur Radio Project Association - DARPA expanding the digital experience.

Cobra Electronics - CB Radios, GPS systems, marine electronics, two way radios, power inverters, speakers, antenna mounts and microphones.

AltE Store - Providers of solar panels, photovoltaic systems, Solar Cells and Solar Renewable systems and education for the Do-It-Yourselfer

US Communication antennas - UnderBumper diversity licence plate antenna system (front and rear license plates) become the antennas. Available in VHF, UHF, Dual Band and other frequencies. We also manufacture mobile antennas for HF VHF UHF wideband antennas

Telepost - Digital Vector Wattmeters, Dummy loads, software defined panadapter systems, SteppIR Tuning Relay, Digital SWR meters, LP-Pan Pan Adapter IQ Decoder for SDR based panadapter system

Will Same - Manufacturer and exporter who have engaged in RF field , CATV , Telecom products field in Taiwan since 1990. Lightning Surge Protectors and arrestor, signal splitters, distribution amplifiers

marnic.org - F5VLB and EA4EOZ have designed a small but powerful system using satfinder and standard LNB to make radioastronomy. A step by step descritpion for the novice about radioastronomy, VLB and listening to echo of meteorite.

D-Star Newsletter - D-STAR Info Newsletter is a quarterly publication that will feature news about D-STAR products and software, regional news on D-STAR systems and activities, hints and tips for users and everything D-STAR.

NN5NN Repeater Page - On 145.11(-) near Fox, AR covers much of north-central AR and the tier counties of south-central MO. Part of the Holley link system.

Weather Satellite Reception - B.E.Cauchi, 9H1JS introduction to weather satellite reception

CAT for Kenwood TS-50 - CAT (Computer Aided Transmitter) system operations for the Kenwood TS-50

Global Microwave Systems - GMS Inc. offers the latest in microwave communications equipment.

MORCOM Int. - Aeronautical communications products, radio communications, weather systems

Microwave Antenna Design Calculator - Available to run on all major operating systems, this free calculator provides quick estimation of antenna size required for a given gain and frequency.

PstRotator - PstRotator handles just about every controllable rotator in common use: Prosistel, Green Heron, HyGain, RC1 MDS, Rotor-EZ Idiom Press, Yaesu Az and many more PstRotator includes automatic tracking for satellite or EME communications, using programs like WSJT, VQLog, TACLog, Z-Track, GJTracker, EME System, Trak_SM, WXtrack, WinOrbit, Orbitron, Nova for Windows, Sat_Explorer, SatPC32, Win-Test. PstRotator supports remote control over TCP/IP.

Ham Fax - HamFax is an application for sending and receiving facsimiles in amateur radio and for receiving public facsimile broadcasts like weather maps. Supported interfaces are sound cards and the SCS-PTCII from Special Communication Systems.

Elmer for iPhone - iPhone Software to practice taking your Ham Radio Exam

Earth Grounding Construction Materials - Article about types of materials that make the best earth grounding systems

Lightning Protection for the Ham Radio Station - K9JY article on how protect our ham radio equipment from lightning

Ferrite for RFI - Ferrite cores for RFI Suppression

SDR Programs for Linux - Review of some SDR programs for linux operating system by NH7O