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HF Copper Loop  ^pop - A small transmitting loop antenna for 14MHz and 21MHz. This is an antenna you might consider if you have limited space, by Lloyd Butler VK5BR Based on material originally published in Amateur Radio, 11 1991

W6OAV'S LOOP - Bill Rinker, W6OAV, handcrafted this compact magnetic HF loop from copper and pvc plumbing supplies, a 12 volt motor, and some teflon sheets. He's had great reports with it.

Portable Loop Antenna  ^pop - This loop it is small and light enough to carry while operating, it disassembles into small but rugged pieces that fit easily in a backpack or gym bag, and it can be tuned from 14 MHz to 30 MHz. This tunable magnetic loop antenna is my contribution to the well established art of amateur loop making. Can be tuned from 14 MHz to 30 MHz.

CB 27.com - Internet comunity site in Spanish

PMR 446 Information Sheet - UK Radio Authority info on PMR466

Radioclub of Campina - Radioclub from Campina city in Romania

Sheffield A.R.C. - Sheffield Amateur Radio Club has, for many years, provided a meeting place and training facility for those interested in Amateur Radio and Short Wave Listening.

Robert F. Heytow Memorial Radio Club - Memorial Radio Club - K9YA. On-air code practice nets and publisher of the K9YA Telegrah - a FREE ham radio e-zine.

Washington State University, Amateur Radio Club - The WSU Amateur Radio Club was established in 1911.

9H9SWT SES - "U.S. Swift Boat SailorsßReunion activities, Special Event Radio Amateur Station callsign ""N4S"" will be operating from March 20 to 23, 2003 from the Sheraton Waterside Hotel, Norfolk, Virginia USA."

Boulder County, Colorado Sheriffs Office Live Radio Feed - Using two Motorola MT500 handheld radios

KEPS Equipments for AO40 downlink - Complete receive system, downconverters, dishes, feeds and preamplifiers for AO40 satellite users

Massachusetts Microwave Corporation - Repair and sales of refurbished, point-to-point, digital microwave radios manufactured by Alcatel and Digital Microwave Corporation (DMC).

Massachusetts Microwave Corporation - Provider of point-to-point microwave radio system sales, service, and integration, employing refurbished name brand digital (DS1/E1, DS3/E3) and analog video radios. Specializing in Microwave Associates (M/A-COM) , Digital Microwave Corp. (DMC/Stratex) and Alcatel/Rockwell microwave radios.

Great Circle calculator - Excellent on-line java great circle calculator with perl source code and excel spreadsheet for gc calculations

FISTS CW Club - FISTS is a well established and recognized CW organization in the world of amateur radio.

DSWCI - The Danish Shortwave Club International - "The DSWCI was founded 1956 and has members in 36 countries all over the world. The member bulletin ""Shortwavenews"" is published regularly in english."

ERP Calculator Plus - ERP Calculator is an Amateur Radio software utility designed to perform a side-by-side comparison of two Ham Radio antenna systems. ERP Calculator comes pre-programmed with data files including published data for several popular brands and types of coax cable as well as several popular antenna system brands and models. ERP Calculator displays values of ERP, Antenna Power Gain, Antenna Feed point Power, Antenna System Gain in dB, Antenna Gain in dBd, SWR Attenuation in dB, SWR Power Attenuation, Coax Loss in dB, and Coax Power Loss

ax25.org - A Swedish site about ham radio and Linux.

Mapper - You can plot stations, country prefixes and print the maps over multiple sheets of paper.

SuperNEC antenna simulation - Hybrid Method of Moment (MoM) and Geometric Theory of Diffraction (GTD) program. Matlab based GUI interface. Genetic optimizer included. Windows/Linux versions.

Metux SSTV radio fax solutions - Provide software and appliances for picture transmission via SSTV and radio fax. Software products are available on GNU/Linux and may be easily used for automatic (non-interactive) image transmissions and receival.

Bi-Pi Search Datasheet - Electronic component engineering, datasheet lookup system

MGF1302  GaAsFET - Published in Radioamater - CQ YU and CQ ZRS magazines, MGF1302 144 MHz and MGF1302 432 MHz

Using ferrites for interference suppression - This tutorial is meant to shed some light on the use of ferrites, and also presents some comparative frequency domain measurements both to illustrate some of the points, and to give designers an idea of what they might expect in using and specifying a ferrite component