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The Gain of the Axial-Mode Helix Antenna - by Dr. D.T. Emerson, National Radio Astronomy Observatory (NRAO++). Antenna Compendium Volume 4, pp 64-68, 1995, published by the ARRL.

Folded Dipole  ^pop - All about folded dipoles, a variation of the dipole is an antenna called a folded dipole. It radiates like a dipole but sort of looks like a squashed quad.

Projects and Info Center - Antenna projects and info center by KP4AO, including The Optimized Wideband Antenna (OWA) Yagi and Skyhawk, a state-of-the-art trapless tribander

Marconi Museum - Wireless radios from all eras Operating ham station - W1FGM Rivals museum at ARRL Hq.

Ham Radio QSO Parties - QSO Parties held around the area. Details about making the most of the many QSO Parties. A place where planning information, operating details and technical advantages are discussed

TR LOG - Contest logging software by N6TR, a free limited version is also available, includes some contests and a cw simulator mode.

IARU R1 VHF Beacon List - This list of VHF/UHF beacons is compiled for IARU Region 1 by G0RDI, and it builds upon the valuable work contributed by G3UUT

Island award resource and iota checkpoint activity - Includes IOTA award application and IOTAMEM computer disk installation and application instructions

YO5OFJ Istvan's Ham blog - yo5ofj's Istvan Vanyi Ham blog

GB3EN The North London Television Group - Formed in 1998 with the aim of encouraging Amateur Television (ATV) activity in the North London/Lea Valley area, and specifically to establish an Amateur Television repeater in North London.

The Cumberland Valley Amateur Radio Club - Since 1956, the CVARC has been supporting Ham Radio in South Central Pennsylvania.

Amateur Radio RF Safety Calculator - This is a main beam power density estimation program intended for use as part of a routine evaluation of RF safety compliance with FCC regulations.

FR Radio Lab - Magnetic Loop antennas, also availble in parts from japan

A/D Technologies - A/D Technologies is a manufacturer and service company dedicated to providing unique and valuable products and services to ourcustomers.

Nevada  ^updated - Nevada has been established for more than 29 years. The company has three main divisions Radio Music Publish

HAM Radio Java/JavaScript - Amateur Radio Webmaster source for Java and Javascript radio related application

W9DMK Software - Various radio related software, including some antenna analysis, and impedance calculators.

Pile Up! - Pile Up! is a CW contest training program. The program requires a SoundBlaster (or compatible) card Available for Linux and Windows 95.

AR Cluster - AR-Cluster is a ham radio packet cluster software supports both node and user connections using RF and Internet. Currently available in Standard and Enterprise version.

BTL Blaster TeLetype - High performance RTTY reception and transmission software, need a Sound Blaster compatible sound card.

RadioControl  ^pop - 32-bit Windows software to control multiple radios simultaneously. Beside direct control, it also features frequency and memory management and various scan options. Supported radios range from AOR to Icom and WiNRADiO.

EZSSTV - Freeware SSTV program by WB2OSZ, Automatic Calibration, Automatic Fine Tuning, Widest Variety of File Types

WinPix32 - Slow Scan TV for Windows 95/98 and NT, WinPix32 supports all SSTV modes in all of the active SSTV families. Commercial demo available but discontinued

J-Track 3-D - Live satellite tracking by NASA science web site. Requires Java

Inductors and Transformers - Solenoids, variable inductors, electromagnetic induction, transformers theory at G3YNH