gps system

Interference Cancelling System - The use of interference signal cancellation has been around for some time. The idea is to use an auxiliary antenna almost any random length of wire in addition to the main receiving antenna

Transmitting Antennas For HF Broadcasting - This paper discusses a number of common used HF transmitting antenna systems and corresponding reference antenna codes. The latter was developed in close consultation with regional coordination groups ABU-HFC, HFCC-ABSU.

Elko Amateur Radio Club - An ARRL Special Service Club located in Northeast Nevada. Operates one of the largest linked repeater systems in the State of Nevada.

TX RX Systems Inc - TX RX Systems Inc. manufactures signal boosters, rf antennas, transmitter combiners, cell enhancers, land mobile radios, duplexers, receiver multicouplers, bidirectional amplifiers, bda, rf amplifiers, rf filters, rf cavity filters, rf combiners, rf components, in building rf coverage, repeaters, repeater amplifiers, rf management equipment, rf systems, and rf solutions. TX RX Delivers Reliable Solutions.

CES Wireless Technologies - CES Wireless Technologies manufacturer of Mobile information Systems including Dispatch and Mapping Software, GPS, AVL, Mobile Data Display Terminals, ANI, CTCSS, and Microphones

Radiowavz Antennas - Double Bazooka, G5RV, W5GI, NVIS, Fan Dipole antenna systems. Custom antnna Builder.

Malaysia Surge Protection - Global Lightning Technology - Malaysia lightning Malaysia surge protection system

Taoglas antennas - Antennas for asset tracking, navigation and remote monitoring GPS, GSM, GPS/GSM, Satellite Radio, WLAN

The One Man Tower - Complete tower system incorporates rotator mount, and lateral support collars. You never have to climb again - and forget the hassle of tilting over to work on large arrays. The "One Man Tower" is the strongest dmall footprint free standing self erecting tower in the world

IRC D-STAR - Independent Radio Club's D-STAR repeater system

NI4CE Repeater System Online Stream - Listen to NI4CE when you're outside the coverage of the network.

ACARS VHF Data - The first of a series of articles that provide an introduction to the latest ICAO defined digital communication modes, including VDL modes 2, 3 and 4. In this edition we begin with the current ACARS application then bring this up to date with AOA.

QSL Card Trac - A new way to display your QSL cards,you can display your Cards with a wall mounted, easy to use track system.

Spy Stations and Cryptography - This article first appeared in the October 1998 issue of Monitoring Times

JACARS - Tthe ultimate program designed to connect you to ACARS systems around the world via the Internet

AFU Knoppix - The AFU Knoppix CD contains software for the operating modes of PSK31, RTTY, SSTV, FAX, APRS and packet radio. Additional applications for Sat tracking, logging, locator referencing and antenna computation are also included. The CD is targeted for radio enthusiasts, the Linux operating system and the applications on this CD are structured so that they can run from the CD without effecting the installed existing system software. *

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.

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.

Predict - Satellite Tracking/Orbital Prediction Program an open-source, multi-user satellite tracking and orbital prediction program written under the Linux operating system by John A. Magliacane, KD2BD. PREDICT is free software

Gpredict - Gpredict is a satellite tracking program for Unix-like operating systems. In the begining (v. 0.1.x) Gpredict was just a GUI client to John Magliacane's excellent satellite tracking program, Predict, but due to performance problems it has been decided to include the tracking code directly into Gnome Predict (v. 0.2.0 and later).

TrackingSat - Wayana software has a commercial and freeware version of trackingsat, satellite tracking systems.

APRS on your phone - iBCNU is an APRS GPS position reporting and text-messaging application for the Apple iPhone. When position reporting is enabled, the application will periodically send out location of your iPhone using either 3G or WiFi network and iPhone's built in GPS receiver

Ground Problems - RF ground systems

Station Lightning Protection - This website outlays the basic knowledge, safe design and installed equipment that are employed in the lightning protection system of a US Coast Guard Auxiliary Radio Facility. This should also be relevant to the Civil Air Patrol, MARS, and Amateur Radio stations who provide emergency communications capability for public safety or the military