u dipole

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u dipole

497 links - and 2 categories

Antennas : 10M
  • 10 meter DiPole - 10 Meter Easy to build wire dipole antenna
    [ Hits: 635 | Votes: 1 | Rating: 10.00 ]
Antennas : 160M
  • Antennas for 160m - The best results work when you have an antenna with a large vertical component. It is difficult to get a horizontal antenna (dipole) high enough to be an effective antenna on 160. However, there are several easy things you can do with your present antenna to initially get on the best amateur radio band
    [ Hits: 757 | Votes: 0 | Rating: 0.00 ]
Antennas : 4M
  • A centre-fed co-axial dipole for 4-m - This design has the following advantages low-cost components, Easy to set-up - nothing to adjust, no metalwork required, and only four soldered joints!
    [ Hits: 321 | Votes: 0 | Rating: 0.00 ]
Antennas : Antenna Calculators
  • Amateur Dipole Antenna Calculator - This calculator is designed to give the horizontal length of a particular dipole including Tees, antenna, or one side of it, for the frequency chosen. Enter the desired frequency and select the desired calculation from the drop box
    [ Hits: 524 | Votes: 4 | Rating: 7.75 ]
Antennas : Baluns
  • Antenna Theory : Baluns - This article describe the principles of baluns when referred to devices used to balance unbalanced systems, like a coax cable and a dipole antenna
    [ Hits: 473 | Votes: 1 | Rating: 8.00 ]
Antennas : Dipole
  • Bent Dipoles reference website - Antenna modeling discussions about What happens if... a dipole is bent horizontally, laterally, vertically. Zig-zag, meander, catenary curve. Effect of sag, elevation, radials. OCF off-center feed, harmonics. Includes 4NEC2 antenna models for each study.
    [ Hits: 416 | Votes: 0 | Rating: 0.00 ]
  • A 10-6-4 three band dipole antenna - A home made dipole antenna for 10m, 6m, 4m bands made with two sections of 450 and 300 Ohm ladder lines, cut to achieve acceptable SWRs on all bands
    [ Hits: 534 | Votes: 1 | Rating: 10.00 ]
  • QRO No-Tuner Multiband Dipole - Construction details of a multiband dipole that can can operate at high power levels, and match its 50-ohm coax feedline without a tuner
    [ Hits: 1230 | Votes: 2 | Rating: 4.50 ]
  • Paper Clip Dipole Antenna - A HF dipole antenna made with 1212 paper clips to make a 40,000mm chain with an overall weight of 538g, mostly a funny experiment
    [ Hits: 542 | Votes: 1 | Rating: 10.00 ]
  • Vertical Antenna 10 through 80 Meter - A Vertical Zepp Dipole HF antenna
    [ Hits: 601 | Votes: 4 | Rating: 9.75 ]
  • A simple 20-40 dipole - A simple to build full length 20/40 dipole antenna to be used in inverted vee configuration
    [ Hits: 706 | Votes: 3 | Rating: 5.67 ]
  • HF Linked Dipole Antenna Calculator - An online link dipole antenna designer allow calculate up to five elements of a linked dipole simply by deciding the desired frequency and defining the support dimensions.
    [ Hits: 1267 | Votes: 6 | Rating: 5.67 ]
Antennas : Portable Antennas : Theory Antennas : Theory : Impedance matching
  • The Gamma Match - The gamma match was originally invented as a means of feeding vertical monopole antennas for medium wave broadcasts, which were earthed at the base for lightning protection- Hams are more likely to use a gamma match to feed a dipole or loop element, but the basic theory is easier to understand for the case of a quarter wave monopole.
    [ Hits: 524 | Votes: 1 | Rating: 8.00 ]
Antennas : VHF UHF
  • VHF UHF Coaxial Dipole Antenna - A base station antenna you can easily build for 146,220 or 440 MHz, with performance similar to a J-pole but smaller and less obstrusive
    [ Hits: 1374 | Votes: 6 | Rating: 8.17 ]
Antennas : Wire
  • Basic Wire Antennas Part I - A presentation of popular wire antenna models like Dipoles, half size, full size, doble zepp, ocf dipoles, G5RV
    [ Hits: 1180 | Votes: 0 | Rating: 0.00 ]
Radio Equipment : HF Portable Antenna : Buddipole
  • Buddipole Deluxe Review - A review of the Buddipole Deluxe Antenna portable HF VHF ham radio antenna
    [ Hits: 511 | Votes: 0 | Rating: 0.00 ]
  • The Buddipole Deluxe Antenna Review - The Buddipole antenna is a very compact lightweight antenna that covers from 40 meters to 2 meters as standard and can be homebrewed to work on 80m and 160m or larger coils can be bought for 80m operation.
    [ Hits: 308 | Votes: 0 | Rating: 0.00 ]
Technical Reference : Coax Cables and Connectors
  • PL259 Surge Arrestor - Limiting static surges on dipoles, verticals or end fed antennas
    [ Hits: 659 | Votes: 0 | Rating: 0.00 ]
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