dc converter

Comparison of Beverage antenna - A ranking of receiving antennas based on noise being evenly distributed in all directions. These rankings are most accurate in the frequency range of AM broadcast, 160 or 80 meter bands

Transmitting Antennas For HF Broadcasting - This paper discusses a number of common used HF transmitting antenna systems and corresponding reference antenna codes. The latter was developed in close consultation with regional coordination groups ABU-HFC, HFCC-ABSU.

David Clark Company Incorporated - Headsets for noisy environments

VLF Time Broadcasts - VLF Time Signal Stations, Station List Compiled by William Hepburn, LWCA

Electron Tubes and Vacuum Tubes for Industry - Electron tube and vacuum tube stock-list with prices 4. Audio, broadcast and industrial tubes, triodes, tetrodes, thyratrons, ignitrons, vidicons and CRT's, microwave devices, nixies and receiving types + Bird RF devices and test equipment. Quality tubes at reasonable prices with many hard to find items available

Bayrak Radyo Televizyon Kurumu - The Turkish Republic of Northern Cyprus broadcasts on mediumwave, shortwave, FM, TV, and satellite frequencies

Voice of Kampuchea Krom - Khmer radio broadcasting weekly on the net covering news, politics and music to entertain

Voice of Tibet - Voice of the Voiceless - Radio VOT daily broadcasts a 30 minute news service in Tibetan and a 15 minute news service in Mandarin Chinese.

Thamil Broadcasting Corporation - Transmitting from london UK

Democratic Voice of Burma - Democratic Voice of Burma is a multimedia organization focusing on Burma - Myanmar. We provide impartial news, information and analysis about Burma. We have two hour daily radio broadcast to Burma via short wave, promoting press freedom, democracy and human rights. Our news is available in Burmese, English, Arakan, Chin, Kachin, Karen, Karenni, Kayan, Mon and Shan languages.

Radio Marti - U.S. Office of Cuba Broadcasting

Radio 510 International - European relay station broadcasting every weekend on short-wave to all of Europe, Northern Africa and the Middle East on 13840 kHz.

Radio Cochiguaz - Radio Cochiguaz is a broadcasting station which began its activities when Cachito Mamani, fascinated by broadcasts of pirate radios he had picked up being transmitted by other colleagues, commented to a group of his friends on an idea he had been mulling over.

JRRI Jolly Roger - free radio station, we are classed as pirates of the airwaves, because we do not have a licence to broadcast on short wave.

Andino Relay Service - The ANDINO RELAY SERVICE, is a free and true pirate station which broadcast with its own transmitter, also lending its broadcasting facilities to all free stations of the World. We are in a secret location, near to the beautiful and majestic Andes mountain range.

CHU Canada - Institute for National Measurement Standards

Young Stars Radio Club - Young Stars Radio Club, is a group consisting the short wave radio listeners' and DXers - having the hobby of radio listening and QSL collection, sharing the experiences and views about international radio broadcasting

English shortwave broadcast schedules - English shortwave broadcast schedules homepage for Prime Time Shortwave

Africalist - A complete list of Subsaharan Africa Radio Stations broadcasting on Shortwave, frequencies, times, listening experiences

EiBi Schedules - Regularly update shortwave schedules of all international broadcasters listed by time or frequency; for free.

Acarsd - acarsd is an ACARS decoder for a LINUX or Windows PC which attempts to decode ACARS transmissions in real-time using up to three Soundcards. acarsd is also a realtime ACARS Server, for the worldwide spotter and ACARS community.

WinGrid & DOSgrid - Gridconv.zip contains Wingrid.exe and Dosgrid.exe, DOS and (16 bit) Windows versions of a simple program that converts between NGR, Maidenhead Locator, QRA, and Latitude/Longitude. They are copyright, but freely distributable for no charge.

SlowHell - A MT Hell dos transmitting program by DF6NM

Cobracom - Oscilloscope, Realtime spectrum analyzer, Impedance meter, RLC bridge and signal generator for Windows. Is a Windows application that converts your PC into a powerful dual-trace signal analyzer (oscilloscope, FFT etc...) . Uses your PC sound card as an Analog-to-Digital a Converter to digitize any input waveform and as Digital-to-analog Converter for the signal generator. True 24 bit adc/dac 48K/96k/192k sampes/sec.

GorbTrack - GorbTrack or Geostationary Orbit Tracker is a freeware program intended to be an aid in finding geostationary satellites. It produces output helpful in aiming dishes for receiving television broadcast satellites. The program also displays several astronomical values like the positions of the sun and moon