people spectrum

Hybrid Antennas - Antennas that use a combination of vertical and horizontal polarisation.

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

Longwave Non-Directional Beacons - Beacons operating in the longwave radio spectrum, generally between 200 and 450 kHz

Oscar Sierra Bravo Priority listing - The OSCAR SIERRA BRAVO is an International DX Group. We believe in promoting friendship through radio amongst all people in the world. The membership is open to ALL radio operators regardless of their nationality, age, race, religion, politacal beliefs, and their memberships with other clubs.

Polish 50MHz pages - All about 6m in Poland incl.: people, contest, awards, etc.

Optoelectronics - DTMF, RF, decoders receivers and accessories icluding computer interface boards, frequency counters, tone decoders, spectrum sweeper and nearfield receivers

Antenna Products - Antennas cover the RF spectrum from kilohertz to gigahertz and support countless mission critical military, air-sea navigation, ILS and voice-data communications applications.

ScanStar - Radio spectrum monitoring and analysis tools for industry and government

US Frequency Allocation Chart - Colorfull radio frequency spectrum allocations in the US, in PDF Format

The Radio Spectrum  ^pop - Radio frequency allocations

Society of Amateur Radio Astronomers - SARA is a dedicated group of people that formed an international society to learn, trade technical information and do their own observations of the radio sky

AMPRNet IP address coordinators - The people listed here have volunteered to issue IP addresses for their areas

Radio Propagation - Spread Spectrum Scene. Radio Propagation notes, with downloadable files.

VHF UHF Microwave Radio Propagation - Notes on radio propagation in that part of the spectrum (upper VHF to microwave) used by experimenters for high-speed digital transmission

North Ireland scanner info - Frequency spectrum, civilian and military frequencies

All Spectrum Electronics - Hobby kits and electronics, semiconductors, components, batteries, ham radio gear and more

Muir Communications Ltd - Victoria BC. - Amateur Radio and 2-way commercial Radio Dealer. Sales and service for ICOM Radio Products. CB Radios, antennas and installations. Spread Spectrum Radio modems.

Isis Electronics (Cheltenham) Ltd - UK Sales of used RACAL, Watkins-Johnson, Icom, Microwave. Large Qty Racal 1792 in Stock. Spectrum Analysers, UHF,VHF Generators, Network Analysers, Bus Switches.

Adventist World Radio - Adventist World Radio, The Voice of Hope for all Peoples

DigiPan  ^pop - DigiPan provides a panoramic display of the frequency spectrum in the form of an active dial scale extending the full width of the computer screen. DigiPan is the result of a joint effort between myself and Nick Fedoseev, UT2UZ, the author of MIXW32, and is intended to make PSK31 operation easier and more enjoyable for everyone.

HamServ - Another way of having your own bbs, using AGW Packet engine. HamServ is a TCP/IP Server program that runs under 32 bit windows and offers support for AX25, HTTP, NNTP, POP3, SMTP, and TELNET. Ideally it should be run under the AGW Packet engine, with the add on TCP/IP driver, it then allows for simultaneous connects via the internet and via packet radio, but it can of course be used stand alone, in which case people will be able to connect to it via the Internet.

Scan*Star - Radio monitoring and analysis tools. Scanning, searching, spectrum analysis and traffic analysis. Amateur, Industry & Government,

Spectrogram  ^pop - Shareware dual channel audio spectrum analyzer for Windows 2000/XP which can provide either a scrolling time-frequency display or a spectrum analyzer scope display in real time for any sound source connected to your sound card. Can be used for MTHELL, QRSS and DFCW by R S Horne

MDS Spectrum Analyzer - Software for radiomonitoring, radio spectrum analysis.

Zelscope  ^pop - Zelscope is a Windows software that converts your PC into a dual-trace storage oscilloscope and spectrum analyzer. It uses your computer's sound card as analog-to-digital converter, presenting a real-time waveform or spectrum of the signal - which can be music, speech, or output from an electronic circuit.