operating systems

Coaxial Transmitting Chokes - Understanding Common Mode and Differential Mode Currents on Transmission Lines by K9YC

Coaxial or Open Wire - Coaxial or Open Wire Transmission Systems at HF Broadcast Stations

SARL Beacon Project on 40 Meters - The beacon project is a South Africa national system of beacons on the 40 meter band operating on a single frequency

F5ZWE Beacon station - Operating in 28.243 Mhz as F5ZWE/B

10 Meter Synchronized Propagation Beacon Project - Project started by several 10 meter beacon operators in an ad-hoc fashion to experiment with operating 10 meter beacons similar in concept to the IARU beacon project

VA3GRR - Radio Beacon - VA3GRR is a radio beacon, operating on the 10 meter amateur band. Its frequency is 28.205.5 MHz. It runs just under 5 watts of power into a vertical half-wave ringo style antenna

Summits On The Air - Republic of Ireland - Summits on the air, sota. an exciting new award scheme for radio amateurs. the scheme encourages lightweight portable ham radio operating in mountainous and wilderness areas areas.

K7JM Amateur Radio Blog and Web Site - radio.McDougallsHome.net The Web site and Blog of Amateur Radio Station K7JM. Homebrew, Construction, Operating, and Discussion

W7GDY TriCity Amatuer Radio Association - Emergency communication is the cornerstone of this organization with the development of operating teams to provide volunteer backup emergency communications support to the cities of Goodyear, Avondale, Litchfield Park and surrounding areas

WCARS - Wright County Amateur Radio Society - The Wright County Amateur Radio Society meets monthly in the city of Buffalo and has several operating events each year including Field Day and the Heart Of The Lakes Triathlon.

Digital Operating Modes - Description, frequencies and sound samples of most popular amateur radio digital modes by DG8FBV

Penninger Radio - Portable Base Systems, Mast Clamps, Aluminum Tubing

CWKtiny - The microprocessor module CWKtiny allows operating CW with a standard PC keyboard.

Ultrasonic Systems - Manufactures high performance spray coating equipment based on patented ultrasonic spray coating technology.

XYtronic - Soldering and de-soldering professionals. Provide quality stations, irons, and rework systems

Latchways - fall protection systems - Latchways are the world leaders in fall protection and the manufacturers of the mansafe range of products for working at height.

Operating NVIS - Near Vertical Incidence Sky Wave (NVIS) Propagation, PPT presentation by Marc C. Tarplee, Ph.D. N4UFP

The Complete Bozo's Guide to HF JT65A - Operating JT65A with WSJT, guide by Andy K3UK

Bike mobile - HTs on a bicycle. Operating ham radio bile mobile

Operating CW while Bicycle mobile - VE3JC use CW while riding along on his bicycles

Radio Frequency Beacon Finder - This project is a radio frequency receiver that will help the user the trace the direction and distance of transmitter beacon(s) operating at 433MHz frequency by Cornell Univerity

Prestigecom - Australian dealer for UHF CB radios, Amateur Radio HF VHF Radios, GPS navigation systems, two-way radio, cordless telephones, radar detectors, marine electronics, amateur radio gear and many other consumer electronic products.

Test Tone Generator - This Test Tone Generator (TTG) turns your PC into a function generator and enables you to demonstrate, test and tune sound systems, create sound effects and a whole range of other uses to suit your needs. It can also be used for educational purposes.

Lightning Protection for the Amateur Radio Station - Article on lightning protection for the ham radio station, Lightning Characteristics, Identify What is to be Protected, Establishing a Good Ground, Coax Cable Grounding, Operating Safety by wrblock.

Lightning Protection Specifications - Materials, installation, inspections and certification