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Antennas : 17M Antennas : 20M
  • W5GI Mystery Antenna  updated  pop - 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: 127600 | Votes: 111 | Rating: 7.89 ]
Antennas : 2M
  • 2m VHF antennas with high gain - 2m SSB/CW-12.5 Ohm Yagis with extrem high gain and small bandwidth. These Yagis were constructed as ultra-light, portable Yagis with extrem high gain. They have small bandwidth and are working from 144,0-144,8MHz with good SWR.
    [ Hits: 7850 | Votes: 9 | Rating: 7.23 ]
Antennas : 40M : 40 meter Loop Antennas
  • Receiving antenna for low bands  pop - K9AY loop antenna installed at PA6Z Contest group. This is a receiving antennas for the low bands (160m, 80m and 40m). Include schematics and info on a building the control box, preamplifier and low-pass filter
    [ Hits: 18263 | Votes: 9 | Rating: 8.33 ]
Antennas : 80M
  • 80-10 Meters Doublets antennas - All band doublet antenna based on NB6Zep's design and an 88 foot flatop version
    [ Hits: 7599 | Votes: 3 | Rating: 9.33 ]
Antennas : EH
  • Small Multiband IEK Antenna - A multi band version of the EH antenna by Emilio S. Campus IS0IEK
    [ Hits: 2358 | Votes: 2 | Rating: 9.00 ]
Antennas : Loop
  • 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: 4847 | Votes: 4 | Rating: 6.50 ]
Antennas : Multiband
  • Levy F9HJ Antenna - A small multiband antenna for vacation in french
    [ Hits: 5434 | Votes: 13 | Rating: 7.38 ]
Antennas : Shortwave
  • AMANDX Dipole - The longwire antenna is a very effective antenna for the listener who wants to cover all of the shortwave bands from 530 KHZ to 30 MHZ.a
    [ Hits: 3648 | Votes: 4 | Rating: 9.75 ]
Antennas : Stealth
  • The Notebook Antenna - the multiband Notebook Antenna, so called because the entire antenna will fit easily inside a 1" thick 3-ring binder
    [ Hits: 4616 | Votes: 5 | Rating: 6.20 ]
Antennas : Windom
  • The FD4 (FD3) Windom Antenna  pop - The 4-band Fritzel model FD4 is a special version of a Windom antenna. It is a half-wave long on the lowest frequency, and is fed from a coax cable through a transformer inserted in the wire at one-third from one end
    [ Hits: 50945 | Votes: 83 | Rating: 5.33 ]
Antennas : ZS6BKW
  • ZS6BKW variant of the G5RV - The ZS6BKW variant of the G5RV claims to offer multi-band coverage without the need for a tuner. This article looks at whether or not these claims are valid in a real life installation.
    [ Hits: 6434 | Votes: 5 | Rating: 7.80 ]
Manufacturers : Amplifiers
  • HA1YA Mechanics & Electronics Inc. - Specializes in manufacture of middle and high power RF decks and high quality linear amplifiers with metall ceramic tubes for HF, 6m, 2m and 70 cm bands. Transverters, power supplies and control units
    [ Hits: 5196 | Votes: 14 | Rating: 7.64 ]
Manufacturers : Antennas : HF : Small & Stealth Antennas
  • ZeroFive Antennas - Vertical antennas for all HF bands, expecially 80 40 20 meters bands
    [ Hits: 6679 | Votes: 40 | Rating: 9.24 ]
Operating Modes : 50 Mhz
  • 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: 1217 | Votes: 1 | Rating: 10.00 ]
Software : Beacon Monitoring
  • Faros - Windows shareware, automatic NCDXF beacon monitor for Radio Amateurs, SWL'ers and HF communication engineers. by Alex VE3NEA. It continuously monitors 18 NCDXF beacons on five bands, automatically detects the presence of the beacon signals, even in QRM and noise.
    [ Hits: 1143 | Votes: 3 | Rating: 10.00 ]
Software : Contesting
  • VHFCtest4Win - VHFCtest4Win is software for contest logging QSO's on VHF bands (50MHz and up). It is build for all windows versions from Windows 95 and up. by S52AA
    [ Hits: 813 | Votes: 4 | Rating: 10.00 ]
Software : Navtex
  • DSCdecoder - DSCdecoder decodes the DSC digital signals from ships and coast stations using the sound card in your PC. You need a suitable MF, HF or VHF band radio receiver tuned to one of the DSC distress and calling channels or to one of the Navtex channels
    [ Hits: 5180 | Votes: 7 | Rating: 6.14 ]
Software : Utilities
  • Voice descrambler - This program descrambles band inverted encrypted transmissions, usually found on VHF/UHF. It uses a NCO (numerical controlled oscillator) to re-produce the originally inverted audio band. Use it only if legally permitted in your country. I assume no responsabilities deriving from its use. Standard disclaimer applies
    [ Hits: 11960 | Votes: 32 | Rating: 6.00 ]
Technical Reference : Amplifiers : HF Amplifiers
  • 11 KW Linear amplifier by I0JX  pop - Use 4CX10000D / 8171, RF output power of 11 KW in key-down carrier on all bands. Power was measured with a Bird 4712 wattmeter and a 25 KW slug
    [ Hits: 23520 | Votes: 28 | Rating: 7.79 ]
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