coverage online

80/75 Meter 4-Square Array - This array has been in use since 1989. The SWR from 3.5 to 3.9 is below 1.5:1. The F/R of the array is 20dB average and with some signals even better.

Inverted Vee calculator - Online calculator for dipole and inverted vee antennas

Ultimate Portable HF Vertical Antenna - A light and compact antenna that is easy to build, and easy to find parts for. Band coverage is 60 through 10 meters.

ZS6BKW variant of the G5RV - The ZS6BKW variant of the G5RV claims to offer multi-band coverage without the need for a tuner. This article looks at whether or not these claims are valid in a real life installation.

Combat Radio - Buy old manuals, military radios, kits, receivers online shop

ARRLWeb: RadiosOnline - ARRL members classified ads

Wisconsin Antique Radio Club - Online - Mission is to preserve the history and enhance the knowledge of radio.

N2JRF Amateur Radio & Hobbies - Amateur radio ham machining mill lathe cannon photo

Scanner Chile - Scanner Chile is a System online where you can listen to the Departments of Firemen of the Metropolitan Region Chile

3840 Audio Archives Priority listing - 80/75 meter Amateur Radio recordings via various online tuners.

Discovery Power Amplifiers - The Discovery series of amplifiers are designed and built in the UK by Linear Amp UK Ltd, one of the world’s leading amplifier manufacturers, specializing in high power RF tube amplifiers. The amplifiers use large GS31 or GS35 ceramic triode tubes. Band coverage 6m, 2m and 70 cms

Amidon Baluns - HF baluns by amidon.de with online shop

DB0ANF APRS Server - Db0anf APRS server for nuernberg / fuerth area, providing online access to the aprs station database

QRPp Presentation - AE5K online presentation

A new method of radio direction finding Priority listing - A method of finding radio sources with antennas based on omni-directionality (the less directional the better coverage). Uses energy levels and some sophisticated math (encompassed in a free software download on the site) to find x,y,z coordinates of the fox relative to the center of your antenna array. Can be overlayed on a GPS map to help you locate in real-time.

IPS - HF Systems MUF maps and prediction charts - These pages provide general propagation advice for HF communicators. Information available includes inferred global propagation conditions, real time HF fadeout coverage charts, regional ionospheric vertical MUF maps and Hourly Area Prediction charts for Astralia and Asia, Europe and North America

RadioShack.com online manuals - Got a question about a product? Not a problem. RadioShack offers an extensive selection of product information.

Sydney live police scanner - Live online police scanner for Sydney Australia.

ScanACT - Canberra Australia live scanner - ScanACT, Canberras first 24/7 online scanner streaming emergency services communications for the surrounding region since 2003

DC Ace Electronics, Inc. - Amateur Radios and Accessories online shop IL USA

Ham Stop - Ham and amateur radios and ham and amateur radio antennas and software equipment and products sold online for all your ham and amateur radio needs. CA USA

Toxic Tops - Online Ham Shack - Stuff - Gifts for the Ham or Amateur Radio enthusiast in your life. Choose from Shirts, Mugs, gifts and more with Ham oriented sayings.

Javascript antenna calculations - Javascript online calculators for dipole 5/8 verticals with radials, and delta loop antennas

VT100/ANSI terminal and Telnet client - Online is a VT100/ANSI terminal emulator and Telnet client for Palm OS organizers. Connect to Unix systems, configure routers and reprogram embedded computers.

Callsign Lookup - Callsign Lookup is a simple, small Apple Macintosh application that allows the amateur radio operator with a dedicated Internet connection (DSL, cable) to quickly access online callsign databases