ulti band radio

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ulti band radio

76 links

Antennas : 160M
  • Invisible DX antenna for the low bands - Article by DK5WL describes a multi-band DX antenna for the 160m-40m amateur radio bands with low visibility but great performance for long distance communication.
    [ Hits: 7004 | Votes: 8 | Rating: 6 ]
Antennas : 20M
  • W5GI Mystery Antenna  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: 139317 | Votes: 123 | Rating: 7.55 ]
Antennas : 20M : 20 meter Vertical Antennas
  • Vertical antenna for 20-15-10 m - This is a vertical multiband antenna made up of several aerial elements lambda/4 length, feeded with just a coaxial cable in French.
    [ Hits: 23550 | Votes: 20 | Rating: 5.2 ]
Antennas : 40M : 40 meter Loop Antennas
  • Multi-Band Super Mini Loop Antenna - How to make the Super antenna. To build this antenna you need a lot that is at least 100 feet across. Antenna covers all bands 80-10 meters + 30, 17, 12 meter WARC Bands This antenna works as a Full Wave Loop on 80 Meters and also works as a 2 wavelength open loop or Bi-Square on the 40 Meter band
    [ Hits: 23204 | Votes: 8 | Rating: 6.95 ]
Antennas : CobWeb
  • CobWeb multiband folded dipole - The cobweb antenna it is basically a 5 band antenna comprising of 5 full half wave dipoles for each band - between 10 meters and 20 meters, the antenna is also resonant on 6M and can be modeled even for VHF frequencies.
    [ Hits: 8620 | Votes: 0 | Rating: 0 ]
Antennas : Dipole
  • An Improved Multiband Trap Dipole Antenna - This improved multiband trap dipole introduces a new trap design and a change in trap location. The antenna features double-coaxial-cable-wound traps having lower reactance and a higher quality factor (Q) than earlier coax-cable traps by W8NX
    [ Hits: 8726 | Votes: 5 | Rating: 6 ]
Antennas : Multiband
  • W4JOH Cobra Antenna - The original Cobra antenna, is a multiband 160 or 80 to 10 meter, designed by W4JOH is built using standard insulated wire of about 14 gauge and fed with 450 ohm ladder line down to the shack into a tuner.
    [ Hits: 1709 | Votes: 1 | Rating: 10 ]
  • CQ amateur radio - W5GI Mystery antenna - Review of the W5GI Multiband Mystery Antenna by July 2003 Issue of CQ Amateur Radio
    [ Hits: 6445 | Votes: 7 | Rating: 6.14 ]
  • Levy F9HJ Antenna - A small multiband antenna for vacation in french
    [ Hits: 5736 | Votes: 13 | Rating: 7.38 ]
  • Some plain facts about multiband vertical antennas - There is considerable confusion as to what exactly a multiband vertical antenna is. The confusion concerns the method of feed, how much mismatch one can expect, how many radials are required, how the particular antenna is built for multiband use, plus some other points.
    [ Hits: 1910 | Votes: 1 | Rating: 7 ]
Antennas : Portable
  • 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: 14505 | Votes: 24 | Rating: 9.04 ]
Antennas : Traps
  • Coaxial Traps for multiband antennas - A new perspective on the analysis and design of this popular antenna element. By Karl-Otto Muller, DG1MFT
    [ Hits: 14632 | Votes: 8 | Rating: 5 ]
  • Building Coaxial Traps - This page describes the design and construction materials W8WWV used to build a coaxial cable trap. A coaxial cable trap is a parallel resonant circuit that is usually inserted in an antenna element to enable multiband operation.
    [ Hits: 10267 | Votes: 5 | Rating: 8.2 ]
Antennas : VHF UHF Antennas : Vertical Antennas : W3DZZ
  • W3DZZ multiband dipole - The multi-band trapped dipole is resonant on approx 3.7, 7, 14, 24 7 28.5 Mhz. The overall top length needs to be approximately 32.9 Meters
    [ Hits: 10466 | Votes: 20 | Rating: 6.9 ]
Antennas : ZS6BKW
  • The ZS6BKW Multiband HF Antenna - Antenna design from ZS6BKW (G0GSF), similar to the G5RV, but it actually resonates on five bands It's only 90 ft long 27.51 m, with a 40 ft 12.2 m downlead
    [ Hits: 6505 | Votes: 8 | Rating: 6.88 ]
Propagation : MUF Indicators
  • Near-Real-Time F2-Layer Critical Frequency Map - This map can be used to determine the frequencies that will always be returned to the Earth. Transmitted frequencies higher than the indicated contours (which are given in MHz) may penetrate the ionosphere, resulting in lost power to space. The map shows the radio auroral zones as green bands near the northern and southern poles.
    [ Hits: 5270 | Votes: 24 | Rating: 4.84 ]
Shopping and Services : Marine Radio
  • Malux - El-Tele-Data - Accessories, Antennas and Battery chargers. Radiators, Repeaters, Yagi, Mag, Car, Tetra, Marine, Multiband, Brackets, Mounting accessories, cables and connectors, radiokits, special cables etc. Based in Finland
    [ Hits: 780 | Votes: 1 | Rating: 8 ]
Software : Internet Linking
  • Ipox5 radio link system - Ipox5 is the freeware version of a commercial radio linking system, designed for amateur, nhw, emergency communications etc. It is optimised for mobile broadband and difficult IP links. It allows PC access, and up to 100 users on your link at one time. Usefull for multiple PMR446 use on very large sites. Works under Windows 98, XP, Vista, and Linux (under Wine)
    [ Hits: 1421 | Votes: 1 | Rating: 10 ]

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