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Antennas : 17M
- KK5BL How To Build A G5RV Antenna
- How to build a G5RV Transmitting antenna
Originally posted to the packet bbs system by KC6CFF. The G5RV is an easy-to-build 80-10 dipole requiring no traps. All bands are covered, including 30, 17, and 12. The G5RV has high SWR, by design, on most bands and a tuner is required
[ Hits: 24321 | Votes: 7 | Rating: 6.15 ]
- Antennas and Feedlines
- Long article on antennad and feed lines
[ Hits: 7407 | Votes: 10 | Rating: 8.60 ]
- The G5RV Antenna System Re-Visited
- The original G5RV antenna system consists of a center-fed horizontal 102' wire plus a 34' length of open-wire 525-Ohm feeder. Louis Varney, the antenna system's developer, intended two other features. Learn more at Cebik website
[ Hits: 4269 | Votes: 0 | Rating: 0.00 ]
- Low reactance multiband center feed wires
- An antenna system is more easily interfaced to a radio when the input reactance at the feedline terminals is low or close to series resonance
[ Hits: 2871 | Votes: 5 | Rating: 8.80 ]
- J-Pole theory
- The J-Pole antenna is an omnidirectional antenna that can be used for base, mobile and field day stations. It does not need a ground plane, radials or a complicated matching system. The J-Pole can be cheaply, simply and quickly constructed using a variety of techniques, some of which are discussed in this article.
[ Hits: 29689 | Votes: 25 | Rating: 6.74 ]
- MOXON Antenna Project
- The MOXON antenna can provide radio amateurs with an excellent antenna system that is easy to homebrew and usually does not require any adjustment if made according to the dimensions specified by its designer. A typical MOXON rectangle can be built in a few hours, using X type of spreaders arrangement as discussed on this web site.
[ Hits: 3965 | Votes: 7 | Rating: 9.14 ]
- SWL antenna distribution system
- A methodology for connecting multiple LF/MF/HF receivers to a single antenna via readily available and inexpensive 75-ohm TV cable. Custom made baluns and splitters provide impedance matching and prevent interaction between receivers.
[ Hits: 1238 | Votes: 1 | Rating: 8.00 ]
- SSA - Non-Directional Beacon
- Airport Locator Beacon, The NDB-SS05 is a complete Dual Non-Directional Navigational Beacon system built to ICAO Annex 10 requirements. It is designed for continuous duty, outdoors operation, easy maintenance and is supported by a full complement of accessories and spare parts.
[ Hits: 1089 | Votes: 0 | Rating: 0.00 ]
- NAVAIDs and Real Property Requirements
- The Impact of navigation aid systems on Air Force Real Property requirements
[ Hits: 1598 | Votes: 3 | Rating: 3.67 ]
- QRZ Ham Radio Exam Test
- This testing system serves as a training aid to help amateurs and prospective amateurs in passing the FCC exams neccessary to obtain US amateur radio licenses.
[ Hits: 2227 | Votes: 15 | Rating: 5.27 ]
- 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.
[ Hits: 1484 | Votes: 5 | Rating: 4.00 ]
- 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
[ Hits: 443 | Votes: 2 | Rating: 5.50 ]
- Wholesale Solar
- Solar panels, solar and wind home power systems, pre-wired power panels. Wholesale prices for everybody. Free solar design.
[ Hits: 547 | Votes: 1 | Rating: 10.00 ]
- About AMTOR
- AmTOR may be considered as the next development from RTTY. AmTOR was introduced to overcome the problems with RTTY. As a result of its performance, it has become popular on the HF bands because it gives more reliable communication, especially when interference is present. It achieves this by using a coding system that allows errors to be detected and corrected.
[ Hits: 237 | Votes: 0 | Rating: 0.00 ]
- USCG Navigation Center DGPS
- Differential Global Positioning Service (DGPS) is a land-based augmentation system that receives and processes signals from orbiting GPS satellites, calculates corrections from known positions and broadcasts these corrections via a Medium Frequency (MF) Transmitter to DGPS users in the Broadcast Site’s coverage area.
[ Hits: 1809 | Votes: 2 | Rating: 4.50 ]
- Albuquerque Transmitter Hunting
- An active group of Amateur Radio operators who locate hidden transmitters for fun and in times of need, such as determining the source of interference to local repeater systems or individuals who use the Amateur Radio bands illegally.
[ Hits: 338 | Votes: 0 | Rating: 0.00 ]
- Wolverine Power Systems
- Wolverine Power Systems provides generators, rental, service and repair located in Holland, Michigan.
[ Hits: 628 | Votes: 0 | Rating: 0.00 ]
- 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. *
[ Hits: 5314 | Votes: 4 | Rating: 3.75 ]
- Radio Management Software for the Radio Shack® PRO-92, PRO-93, PRO-2067, PRO-2053, PRO-95 and PRO-96 multi-system trunking scanners.
[ Hits: 2038 | Votes: 0 | Rating: 0.00 ]
- Cellular Phone Interference
- Cellular Phone Interference and 800 MHz Public Safety Radio Systems: An Unforeseen and Dangerous Problem
[ Hits: 848 | Votes: 0 | Rating: 0.00 ]
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