dx system75 links
Antennas : 40M : 40 meter Magnetic Loop Antennas
- A magnetic loop antenna for HF
- Able to cover all frequencies between 3.5 and about 10 MHz, the loop described here is directional, does not require a radial system, and stands just 1.8 metres tall. The antenna can be put together in a short time and is cheap by Peter Parker VK3YE ex VK1PK
[ Hits: 95163 | Votes: 37 | Rating: 7.05 ]
- Short Vertical Antennas and Ground Systems
- This article describes how an effective ground system can be produced for a short vertical antenna.
[ Hits: 23070 | Votes: 11 | Rating: 6.08 ]
- QSL INFO SYSTEM by IK4LZH
- QSL database lookup provided by IK4LZH
[ Hits: 943 | Votes: 1 | Rating: 10.00 ]
- RT Systems
- Online shopping, Programming Software, Icom, Yaesu, Kenwood, Istron, HyGain, MFJ, cat cables interfaces and other radio control cables.
[ Hits: 2428 | Votes: 2 | Rating: 1.00 ]
- Andrew Corporation
- Communications products, communication systems products, fiber optic cables, global messaging service, gyroscope and navigation systems
[ Hits: 1521 | Votes: 1 | Rating: 2.00 ]
- Connect System
- Controllers and Telephone interconnects.
[ Hits: 1685 | Votes: 1 | Rating: 1.00 ]
- USNO Mater Clock Time
- Time reference from USNO, USNO Time in Standard Time Zones,USNO Master Clock Time Animated GIF Clocks, Analog Java Clock, Compute Local Apparent Sidereal Time, Check your local System Clock vs. our Master Clock!
[ Hits: 1649 | Votes: 9 | Rating: 5.89 ]
- The National Traffic System
- ARRL National Traffic System for routing formal written message traffic
[ Hits: 1307 | Votes: 2 | Rating: 8.50 ]
- SPRE Home Page
- The Spartan Packet Radio Experiment (SPRE) is an Amateur Radio (Ham radio) communications experiment. The primary mission was to test satellite tracking using amateur packet radio and Global Positioning System (GPS). SPRE was developed and built by the University of Maryland Amateur Radio Association (UMARA) with assistance from NASA, volunteer engineers, and volunteer software professionals.
[ Hits: 802 | Votes: 1 | Rating: 4.00 ]
- NAVSTAR GPS Timing Operations
- NAVSTAR GPS Timing Operations, USNO GPS Data & Information Files Global Positioning System Overview Current GPS Constellation, GPS Time Transfer Operations, GPS & Glonass Satellite Visibility
[ Hits: 700 | Votes: 2 | Rating: 6.50 ]
- Satellite Tutorial
- A good starting point to setup an Amateur Radio Satellite receiving system.
[ Hits: 2105 | Votes: 7 | Rating: 5.43 ]
- Optical Research Programme
- Auroral Large Imaging System, ALIS
[ Hits: 578 | Votes: 0 | Rating: 0.00 ]
- National Weather Service
- Some little known facts about the NOAA Weather Radio system
[ Hits: 883 | Votes: 0 | Rating: 0.00 ]
- Real-time, schedule of the transmitting times, frequencies, short-path and long-path beam headings for each beacon from your QTH. BeaconClock is for Windows 9x/NT/2k systems.
[ Hits: 1776 | Votes: 3 | Rating: 4.67 ]
- RXCLUS is a free windows amateur radio software especially designed for the DX'ers and SWL's wanting to receive the informations transmitted by packet radio on the DX-cluster system. It supports also telnet protocol.
[ Hits: 5927 | Votes: 17 | Rating: 7.99 ]
- GcmWin : Great Circle Map
- GCM is a freeware great circle map plotting software for windows, you can choose colours, scale, meridians, fields and or squares from the maidenhead locator system.
[ Hits: 24487 | Votes: 74 | Rating: 6.54 ]
- Macintosh shareware, contains the full pool of questions for each of the five exams, and creates sample tests that will vary each time you take them and it will grade your exam.
[ Hits: 1013 | Votes: 2 | Rating: 8.00 ]
- XMLOG freeware Logbook
- XMLog is an amateur radio logbook system for Windows and Windows NT.
[ Hits: 12585 | Votes: 34 | Rating: 7.51 ]
- AREPS propagation programs
- Collection of various propagation software by Space and Naval Warfare Systems Center, San Diego, Atmospheric Propagation Branch
[ Hits: 7896 | Votes: 32 | Rating: 4.64 ]
- EMI Calculator
- Does your Amateur Radio system comply to the EMI rules ? (German values implemented)
[ Hits: 1283 | Votes: 7 | Rating: 7.15 ]
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