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Antennas : 20M- W5GI Mystery Antenna
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- W5GI Mystery Antenna is a multi-band wire antenna that performs exceptionally well even though it confounds antenna modeling software.
This antenna covers 80 to 6 meters with low feed point impedance and will work with most radios, with or without an antenna tuner. It is approximately 100 feet long, can handle the legal limit, and is easy and inexpensive to build. It is similar to a G5RV but a much better performer especially on 20 meters.
[ Hits: 139383 | Votes: 123 | Rating: 7.55 ]
- 80-10 Meters Doublets antennas
- All band doublet antenna based on NB6Zep's design and an 88 foot flatop version
[ Hits: 7843 | Votes: 3 | Rating: 9.33 ]
- The Monoband HF dipole antenna
- If you are looking for an easy antenna for your favorite band, you can't go wrong with an halfwavelenght dipole, all you need is 3 insulators and some wire
[ Hits: 3480 | Votes: 4 | Rating: 8.75 ]
- Build An LF Antenna Analyzer
- A Portable Low Frequency Antenna Analyzer, For those of us who like to play with antennas on the ham bands, one of the handiest tools to have around the shack is an "antenna analyzer". These gadgets combine a signal generator and standing-wave ratio (SWR) sensor in a small battery-powered unit.
[ Hits: 4567 | Votes: 2 | Rating: 5 ]
- A 16 Turn S-Band Helix
- This design represents the smallest practical antenna for Oscar-13 mode-S. Perfect beacon reception at all times is possible, and acceptable SSB even at 43,000 km range.
[ Hits: 8908 | Votes: 4 | Rating: 7.5 ]
- W4TI - Installing the Hexbeam
- HX-B5i five band HexBeam installation
[ Hits: 2078 | Votes: 2 | Rating: 8.5 ]
- A 5 band log periodic dipole array
- Modified version of the Telerana antenna which was orginially featured in the July 1979 issue of QST. The array is suspended within a framework made of fiberglass poles emanating from a central hub with the ends tied together with light weight rope around the perimeter. 10-15-20-30-40 meter band coverage
[ Hits: 10004 | Votes: 12 | Rating: 6.59 ]
- The full-wave loop antenna
- These omnidirectional antennas offer Horizontal polarization, and about 2.1 dbd of gain. They are much quieter than a dipole or a vertical, have a broader bandwidth and will usually out perform a dipole antenna.
[ Hits: 5052 | Votes: 4 | Rating: 6.5 ]
- M1IOS - Wonder Whip antenna and tuner
- M1IOS Wonder Whip antenna - The M1IOS Wonder Whip A 10 dollars QRP Portable Multiband Antenna for HF, VHF and UHF A variation on the Miracle Whip and Wander Wand. This antenna tuning unit will get your SWR really low on telescopic whips, mobile 3/8th antenna and long wires. A remarkable little tuner that really works!
[ Hits: 14510 | Votes: 24 | Rating: 9.04 ]
- BiQuad 802.11b Antenna
- BiQuad 802.11b Antenna 11dBi, wide band by Trevor Marshall
[ Hits: 8287 | Votes: 9 | Rating: 6.12 ]
- Narrow-bandwidth Television Association
- Narrow-bandwidth Television Association devoted to all aspects of early television.
[ Hits: 259 | Votes: 0 | Rating: 0 ]
- GlobalTuners.com
- GlobalTuners provides access to web controlled receivers. Listen to Ham radio, Tune Shortwave radio, Listen to Air traffic control, experience Airband receptio including ACARS and Airports. Tune remotely controlled receivers all over the world with your browser and get live audio.
[ Hits: 8976 | Votes: 44 | Rating: 5.79 ]
- LF Sound Gallery
- Sounds from the 136 kHz band
[ Hits: 1014 | Votes: 4 | Rating: 3.25 ]
- Larry's Antennas LLC
- All bands HF mobile antennas manufacturer
[ Hits: 2182 | Votes: 6 | Rating: 7.17 ]
- ZeroFive Antennas
- Vertical antennas for all HF bands, expecially 80 40 20 meters bands
[ Hits: 7083 | Votes: 40 | Rating: 9.24 ]
- Eliminate QRM from 6 meters band
- The circuit described below will substantially reduce or completely eliminate interference from almost any local source whilst leaving the wanted signal relatively unaffected, even though it may be on the same frequencey by TREVOR, G3ZYY
[ Hits: 1568 | Votes: 1 | Rating: 10 ]
- WinDRM - HF Digital Radio Mondiale
- WinDRM is the hottest digital mode on HF today! Nothing else exists where you can transfer data at almost 1KB/s without using proprietary hardware. HF Digital Radio Mondiale allow fast data, pictures, and voice over a 2.5Khz bandwidth
[ Hits: 18089 | Votes: 22 | Rating: 7.81 ]
- Modifications for the Yaesu VX-5R
- VX-5R Loose antenna cure, Vx-5r Free Band, VX 5 R modification for German, VX-5R expanded frequency mod, VX-5R MARS/CAP & freeband mod
[ Hits: 3439 | Votes: 2 | Rating: 4 ]
- Hombrewing an HF Transceiver
- This page will describe the construction of a multi band SSB transceiver with all its components Band Pass Filter, Oscillator/Modulator unit, RX/TX Mixer TX Amp I.F. Amplifier AGC VFO Driver amplifier Receive audio amplifier Final amplifier Low pass filter Digital display and VFO stabiliser
[ Hits: 4366 | Votes: 6 | Rating: 8.33 ]
- Rainbow Antenna Analyzer
- A small and inexpensive measurement device designed to determine antenna performance across the amateur bands through use of automatically collected SWR readings
[ Hits: 6767 | Votes: 7 | Rating: 5.57 ]
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