ac voltage representing

FRC - Frankford Radio Club - FRC since 1927, contesting is supported by an extensive PacketCluster Network

Ex-USSR Territories - Updated list of prefixes and suffixes of ex-USSR radio amateur stations

DLĜLY Lübeck Award - The Railway Radio Amateur Group of Lübeck issues this award to all radio amateurs and SWLs.

United States Prefix award - Amateur award plaque for contacting at least 200 different prefixes fron the US or its possessions.

K1TMD - K1TMD packet and stuff pages

Amateur Radio & DX Reference Guide - Ham Radio and DX topics by AC6V

Array Solutions - WX0B - Stacking and phasing HF and 6m arrays antenna switches and contesting devices. Custom low band antenna arrays, bandpass filters,commercial/Mil STd filters,microwave components, commercial broadcast filters.

Metal Cable - Distributors of specialty metals, electricial wire & cable, and high capacity magnet mounts for government and business. Stainless steel bars and rods for nuclear applications.

Hamstick - Lakeview antennas, manufacturer of mobile antennas and accessories by WD4BUM, including colinear antennas, dual band, mounts and accessories. Maker of popular HamStick antennas.

Barker & Williamson - Dipole antennas, unique broadband antennas, trap dipole antennas, coils, accessories for HF radio

Delta X-Ray Antennas - Antenna Manufacturer HF Delta Loops and VHF/UHF Ground Planes

Q-PAR Microwave Antennas - The company (founded in 1973) excels in the research, design, development and manufacture of microwave antenna systems & components. Our range includes horn, reflector, sinuous, spiral, LPDA, helical antennas, etc; antenna positioners, and many bespoke components.

Unadilla Antennas - The Big Signal, W2AU, W2DU, W2VS, traps InLine, Intenna, An-sulator, End-sulator, Old Reliable by Unadilla Antenna Manufacturing Co.

Zetagi  ^pop - Zetagi amplifiers, accessories, power supplies, microphones, SWR and power meters, battery charges

PCE Int. - PCE International Inc, towers and accessories

CIA World Factbook - Country maps and flags and detailed informations about almost all countries of the world

Ohio Aprs - APRS activity in Ohio

Centre de prevision de Meudon - Centre de prevision de activite solaire et geomagnetique de Paris-Meudon

Kanzelh¸he H-alpha Images - H-alpha images taken at Kanzelhoehe Solar Observatory Austria

Catania Solar Images - Daily Solar images taken in Catania Astrophysical Observatory Italy

Solar Activity Forecast - Solar-activity and Geomagnetic activity forecast from Czech Republic

Solar Glossary - Glossary of solar and terrestrial terms, by the Space Environment Center

Scanner VHF-UHF monitoring - Scanner VHF-UHF software for monitoring VHF-UHF range by means of receiver ICOM IC-R8500.

TH-D7 control program - This software allows you to control TH-D7 radio functions in real time, using a windows interface. This software will graph current activity of any 4mhz range, allowing the user to mouse click any active portion - automatically changing the radios frequency.

9v Battery Charger - Improved 9.6V compact fast charger project by AD5X