rf spectrum analyzer sof

40 thru 10 Meter Zepp Antenna  ^pop - A modified 20 meter double zepp wire Operating Bands: 40 thru 10 meters (with tuner), basic construction and performance information.

Why active antennas aren't perfect - There have been various comments here regarding the effectiveness of active antennas

Dipoles - The simple dipole is perhaps the best antenna for consistent performance. Basic page on dipoles by G3PTO

Testing EH Antennas - EH antenna tests report by Claudio Re, I1RFQ in pdf format

The Carpet Loop - The Carpet Loop II is an inexpensive, easily built, high performance antenna that can work in almost all apartments.

Radiation and scattering - Basic antenna theory, Antenna directivity and effective area, Antenna arrays

The gain of aerials: the myths explained - In the long history of beam aerials there has persistently existed the claim that certain types of aerials perform better than yagis.

Colorado Dist. 16 ARES - Colorado ARES District 16 is the counties of Pueblo County and Huerfano County.

Christian Amateur Radio Fellowship (CARF) - CARF combines the wonderful world of amateur radio with Christian fellowship and service.

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."

Laipac Technology Inc. - We are committed to constantly improving our solutions in areas of GPS System, GPS Receivers, GPS Antennas, GPS Dataloggers, RF Modules, Wireless Security Systems, Automatic Vehicle Location (AVL) for real time and passive tracking

EQSO.ORG - eQSO is a complete dedicated ham radio internet gateway and server system. It is intended for use by RF gateways and PC users connected to the internet

KC5ORO Echolink Internet Linking System - Echolink is software that allows amateur operators to communicate via the internet. It works by VoIP or Voice over IP technology

Hidden and stealth antennas  ^pop - Antenna Restrictions, Power Restrictions, RFI Problems, or Limited Space keeping you off the air?

General Aviation Frequencies - General use frequencies

MultiNEC - MultiNEC can automate the repetitive steps of antenna modeling. You can start by building the model from scratch or by importing an existing model in any of several formats. Then you can run multiple test cases while letting the program make small changes to the model between runs. MultiNEC can be used by itself if you like, but it really shines when used in conjunction with your existing antenna modeling program. MultiNEC works with EZNEC Standard, EZNEC-M Pro, EZNEC/4 Pro, NEC-Win Plus+, NEC-Win Pro, GNEC, Antenna Model (Teri Software), and 4nec2

Speak Freely - Free Internet telephone originally written in 1991 by John Walker, mostly a voip software

iVisit - Video Conferencing software whith ham radio chat rooms.

LAN-LINK for windows - Smart multi-mode controller software, contest, logging, APRS, and ``PSK31 via Sound card.

CallSign Software - Hi-end software for the Ten Tec software radio line inluding Pegasus Jupiter and RX-320

ISSTV - ISSTV is a freeware software for amateur radio that allow sstv connections via internet and radio waves

VK5PGT Utilities Page - GkjBios, Tfpcx, tfpcx, Tsthwarc Archive Manager, Flexnet baycom drivers, AGWPE driver, TF2AGW v1.1 dll interface

2 m. Band VHF PA 5 Watts - A VHF power amplifier made with two cheap RF transistors, 2N3924 as driver and a BFS22A for final stage, giving an unexpected output power of 7-8 watts maximum

Eliminate That QRM - reduce or completely eliminate interference from almost any local source whilst leaving the wanted signal relatively unaffected, even though it may be on the same frequency

Bluetooth Headset with built-in PTT - A Bluetooth Headset Interface with built-in PTT for Amateur Radio by Bertrand Zauhar, VE2ZAZ