477mhz uhf 11element pla

K3KY's Short Beverage  ^pop - Originally planned as an 80/160 Beverage, this antenna is a terrific performer on 40 and 30 meters

Beverage Antenna Construction - Types of beverage wires, choose best supports and insulators, multiple antennas at one feedpoint, all well documented with photos and exaustive explanation.

A Magnetic Loop Antenna for Shortwave Listening (SWL) by KR1ST - A well documented plan to build a magnetic loop antenna for Shortwave Listening, includes photos and diagrams.

Cheap antenna to make from 160m - 6m  ^pop - The antenna is nothing more than a simple 2.4 metre square loop drawing pinned to the internal brick wall of the spare bedroom. Yep, thats right, the inside wall of the spare bedroom - ideal for flat dwellers, hotel rooms or whinging neighbours, The loop has a simple switched inductance at the top of the square loop and uses a simple coaxial stub to tune the antenna. An additional variable capacitor placed across the feedpoint can be used to fine tune the resonance of the antenna, by Andy G0FTD

AERO ham radio club - W3PGA - middle rivermaryland, established in 1946 in cooperation with the Glen L. Martin Aircraft Plant in Middle River

Frequency Counter for VHF/UHF - DFD4A for bench top test equipment, has a built-in prescaler good to more than 3 GHz.

Digital Voice in Amateur Radio - John DeGood NU3E, explain priciples of trasmitting digital voice using ham radio devices

CW Command Post - Replace four separate accessories keyer, keyermemory, audio filter, and audio amplifier-- with one box containing allfour and providing for multiple inputs and outputs. N1FN CW CommandPost A not very original CW operating accessory "put together" by N1FN

An HF Packet Tuning Indicator - This article describes the use of a PSK31 soundcard program's "waterfall" display as great tuning indicator for any HF packet TNC

An Introduction to FlexNet - Features and operation of FlexNet packet networking software are discussed. Details of the software architecture, RMNC and MS-DOS hardware platforms, applications, user interface, adaptive parameters, and routing techniques are presented.

KN4LF LF/MF/HF Radio Propagation Theory Notes - Layman level explanations of "seemingly" mysterious LF MF and HF propagation occurrences.

Handbook on grounding - U.S. Government's military handbook on grounding in pdf format

Hamradioindia Shopping - on-line shopping of rf components, ICOM replacement boards, marine modules, kits and more

WR International - WR International “Europe’s Nostalgia station” Playing all the songs that you grew up with and radio has now long forgotten.

Radio joystick - Funky Homepage: History, News, Playlist, etc.

ADDX Schedule - Search for schedule of radio programs by selecting the language

SV2AGW AGWCluster - The program can display DX Spots from Internet telnet from packet if you connect to a Packet DX Cluster or from unproto dx spots.

Satscape  ^updated - Satscape is a freeware program for the PC Macintosh and Linux. It produces real-time displays of where any Satellite is, and predicts passes for your locale. There are about 8000+ satellites in orbit, a lot of these are just junk and debris such as discarded rocket bodies, but quite a few are working Satellites.

RodLog HAM radio logging system - A site about RodLog, a HAM Radio logging system to replace the paper logbook and allow fast searching and analysis of the data.

Radio Mobile - Excellent, very detailed radio path mapping software, vhf uhf propagation predictor This software is a tool used to predict the performance of a radio system.

Home Planet Release 3.1 - Comprehensive astronomy / space / satellite-tracking package for Microsoft Windows 95/98/Me and Windows NT 4.0/2000/XP

Satbuster - SATBUSTER for Windows is especially designed for satellite visual observers and trackers. Its users, mainly amateur astronomers and radio amateurs, appreciate both the accuracy and the simple to use graphical interface.The software is aimed to hobbysts. However a growing number of plain folks are starting to use this tool to recognize and look at the International Space Station and the Space Shuttle during its missions too

Satellite tracking with GPS - The program calculates the actual position of the satellites using the NORAD 2LINE-element set, which is available via the Internet, for nearly all satellites. The position is then displayed in 3D-view as well as in 2D (mercator) view, where the footprints are also be shown.

GorbTrack - GorbTrack or Geostationary Orbit Tracker is a freeware program intended to be an aid in finding geostationary satellites. It produces output helpful in aiming dishes for receiving television broadcast satellites. The program also displays several astronomical values like the positions of the sun and moon

Grounding Concepts - What is ground?RF ground and the ground plane, how can I tell if I have a good ground? ground loops