gps system

160 meters long wire antenna - The Ladder-line Twin-lead Marconi Antenna system for 160 meters band

Top-Loaded Wire for 80 and 160 Meters - Operating on 160 meters from a city lot is always a challenge. Here's how K9YC does it.

Online Antenna Calculator - Java script antenna calculators for ground planes, half wave verticals, quad antenna, 5/8th wave vertical antenna, dipole and inverted vee antennas

G0KSC Revolutionary Yagi Antenna Feed System - New feed system for the Yagi directional beam antenna, that suppress unwanted side lobes within longer Yagi designs by G0KSC

The Joystick Antenna - The Joystick antenna was used many years ago as an all band vertical HF antenna under restricted space situations that would cover from 80 meters thru 10 meters with a tuner and was a great commercial success Some hams even had success with it on 160 meters.

Earth Systems - In order to resonate at a particular frequency, an antenna needs to be at least one half wave length long. Antennas below a 1/2 wave are dependent on a ground system for resonance as well.

Argent Data Systems - OpenTracker+ and Tracker2 series APRS devices for real-time vehicle tracking, weather monitoring, and remote telemetry, aprs tracker manufacturer.

DMsolar - Solar Panels, Grid Tie Systems, Solar Power Kits, Solar Cells and more. DMsolar carries solar energy products for your needs.

Antennas Store - antennas.us - All types of Military Antennas, Law Enforcement Antennas, Mobile Radio Antennas, GPS Antennas, Satellite Antennas, WLAN/Wi-Fi/WiMax Antennas, Cell Phones, TV, HDTV Antennas available and sold

Combo Antenna - Manufacturer and exporter of GPS equipment including GPS antennas

QHtenna - The QHtenna Turnstyle antenna system offers horizontal omni-directional antennas for the Ham frequencies in the VHF/UHF range of 50 Mhz to 432 Mhz. The Crossed Field Antenna" (CFA) by QHtenna offers a small antenna for limited space, maritime mobile, and seasonal DX work.

Spectrum Microwave Inc - Spectrum Microwave is a market leader in the world of RF & Microwave components and system

Wire Harness Assemblies - Printed Circuit Board, Custom Overmold Cable Assembly, Box Build, System Integration, Sheet Metal

How the Hellschreiber works - Hellschreiber is a teleprinting system based on low-resolution character-level facsimile. Learn how it works with animations and graphics.

Radio Direction Finding - introduction - History of Radio Direction Finding, performance and limitation of RDF Systems, RDF for non professional use

KQ2H Repeater live stream - Repeater system in the New York metro area Service provided by W2LIE.NET

Real time F2 Map - Global real time ionospheric foF2 map

The N6QAB TH D7A GPS compatibility page - This page only applies to TH D7A's that have a S/N below 010xxxxx and have not had their firmware upgraded by a Kenwood Service Center.

Train's Towers - Maintenance of Antenna Tower Systems, Antenna tower foundation analysis and repair, Tower troubleshooting and repairing

Antenna Systems & Solutions, Inc. - Antenna Systems & Solutions, Inc. carries antenna mounts, antenna guyed towers, antenna self-supporting towers, four legged towers, BX towers, poles, tower hardware, and wall mounts.

D-PRS - D-PRS is GPS for ham radio. Includes DStarTNC2, javAPRSSrvr, DStarInterface, and TNC-X. D-PRS is the act of converting Icom GPS information generated by Icom D-STAR radios in GPS mode into TNC2 fomatted APRS strings.

D-STAR Gateway Software - ICOM software to interconnect D-Star systems

CWCom - CWCom is a morse code chat progam for Windows and NT operating systems. You can use CWCom to transmit and receive morse code and text messages over a LAN or across the internet! CWCom can translate morse code to text and text to morse code or flashing light, so you don't have to know morse code to use it.

Making the right connection - The humble connector plays a very important role in the communications chain. It can make or break your system - and often does.

Batlabs - Motorola two way systems technical documents