broadcast frequencies

Log Periodic Antenna Design  ^pop - calculates the dimensions and spacings of the elements needed to build a log periodic antenna, given tao, sigma and the lower and upper cutoff frequencies.

Advanced active VLF Loop - Article on using loop antenna in very low frequencies

Circularly-Polarized FM Broadcast Antenna - A Circularly-Polarized Commercial-Style FM Broadcast Antenna

Amateuradiomalaysia - This site is meant to assist all Amateur Radio members know the "ins" and the "outs" of how to enjoy the hobby of getting on the amateur radio frequencies, by 9W2SSJ & 9W2RYS

W5HLH - The Future of radio - Exploring the future of radio, wireless, broadcasting, ham radio, and DX/shortwave listening. Edited by Harry Helms, W5HLH.

Radio 2 Radio Blog - Radio 2 Radio broadcasts amateur & HAM radio news and current events from around the world.

R.A.I.N. Report newscast - A weekly report with interviews about amateur / ham radio and people in the hobby. broadcast in realmedia and windowsmedia streaming Rain Report about Amateur Ham Radio with Hap Holly, KC9RP

Saskatoon Scanner - Live Saskatoon police and fire dep. scanner

Kiwa Electronics - Kiwa Electronics is a company that specializes in accessory equipment for the radio enthusiast. Our products include Filter Modules to improve receiver performance, a High Performance Medium Wave Air Core Loop Antenna for improved broadcast band reception, the Pocket Loop Antenna, the Earth Monitor, BCB Rejection Filter and Broadband and SW Preamps. We also offer numerous performance upgrades for popular receivers.

RF HAMDESIGN - An engineering oriented organization specializing in the design and manufacture of high performance parabolic antennas, 3dB high power RF couplers, Antenna power splitters, directional RF couplers and more items for RF transmission from HF through Microwave frequencies.

Spectrum Instruments - Spectrum manufactures very high-performance, low-cost, GPS-disciplined time and frequency reference standards for industry, scientific, calibration, broadcast and amateur operators.

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.

Penta Laboratories - Penta Laboratories is a Manufacturer and Distributor of vacuum tubes, capacitors and electron tubes for Broadcast, Industrial, Marine and Avionics applications worldwide.

How to make your ham radio system mobile - How to make your ham radio system mobilemany ham radio operators carry radios for fun, safety and public service activities. radios for both vhf and hf frequencies can easily be installed in vehicles.

Geophysical Alert Message wwv.txt - Broadcast via WWV and WWVH at 18 and 45 minutes past the hour. This message is updated every 3 hours. Reports current Solar-terrestrial indinces, Solar Flux, A-index, K-Index, forecast for space weather storms. Prepared by the US Dept. of Commerce, NOAA, Space Environment Center

Near-Real-Time F2-Layer Critical Frequency Map - This map can be used to determine the frequencies that will always be returned to the Earth. Transmitted frequencies higher than the indicated contours (which are given in MHz) may penetrate the ionosphere, resulting in lost power to space. The map shows the radio auroral zones as green bands near the northern and southern poles.

LW Navtex Broadcasts - Navtex Maritime Safety Information Broadcast Channels

NSW Emergency Service Scanning - Scanning information (frequencies and talkgroups) of the emergency services in NSW, such as the NSW Police Force, NSW Fire Brigades, NSW Rural Fire Service, NSW State Emergency Service and Ambulance Service of NSW.

Sydney Scan - Frequencies for radio scanning enthusiasts from anywhere around Sydney, Australia

LouisvilleScanMan - One stop site for scanner users in Louisville Kentucky. Frequencies,10-Codes,Unit Numbers,Scanner News and more. Covering Fire,Police,EMS,Disaster,Civilian Emergency,Aviation,Railroad and other services.

Bergenscanner.com - Radio frequencies for Bergen County located in Northern New Jersey

WBCQ The Planet - This summer, WBCQ is running The Voice of the M/S Katie, live radio broadcasts originating from our radio ship the M/S Katie in Boston, Massachusetts. WBCQ broadcasts 50,000 watts on each of its four international shortwave transmitters on 5.110, 7.415, 9.330 and 18.910 MHz

Cobalt pet: shortwave weblog Priority listing - Cobalt Pet is a weblog focusing on shortwave radio. It features shortwave reception reports, product reviews, photos, listening tips, and links. International broadcasters and amateur / ham radio operators are monitored and discussed.

ILGdb - Free program that interfaces most ICOM radios with the ILG radio frequencies database and lets you click a station in the database to tune your radio to the station, or scan the list looking for stations that are on the air.

FREQ DB Icom - Program that interfaces with a text file of frequencies plus other data and tunes your ICOM radio. You create this data yourself, and can use almost any data you wish. You use the program by clicking a station in the file to tune your radio to the station or net, or scan the list looking for nets that are on the air.