220 meter

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220 meter

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Antennas : Four Square

  • TX Four Square Antenna - A 220-ft tower that has five catenary lines, each about 500 feet long. Four of these lines, running NE, SE, SW, and NW support four 1/4-wavelength wire verticals used in a 160-meter four-square antenna.
    [ Hits: 787 | Votes: 0 | Rating: 0 ]
Antennas : J-Pole
  • 3 band J-Pole Antenna - Pictures of a 2 meter, 220, 440 copper J-Pole antennas
    [ Hits: 2607 | Votes: 12 | Rating: 6.08 ]
Manufacturers : Antennas : HF : Magnetic Loop
  • W6LVP Loop Antennas - Magnetic loop receive antennas manufacturer. W6LVP loops cover 2200 through 10 meters (135 kHz through 30 MHz) with no tuning or adjustment.
    [ Hits: 144 | Votes: 1 | Rating: 4 ]
Operating Modes : Longwave
  • Low Frequency Transmission Modes - Article by W1TAG on operating modes used on low-banding. The 2200 meter band (135.7 - 137.8 kHz) is only 2.1 kHz wide, so voice work on SSB or AM is out. Find out the best modes on LF
    [ Hits: 437 | Votes: 0 | Rating: 0 ]
Propagation : Resources
  • Propagation on 630 Meters and 2200 Meters - This is a theoretical look at propagation on 630-Meters and 2200-Meters using ray tracing software. It expands on the brief discussion in the ARRL Handbooks. The Earth's magnetic field affects 630-Meter and 2200-Meter band propagation. Lower ionization reduces absorption, aiding low-frequency propagation. Differences exist between bands, limited daytime sky-wave propagation. Sunrise/sunset show promise, yet mechanisms are unclear. Ducting possible at night in specific conditions. Negative ions enhance propagation. Inefficient antennas and high man-made noise are anticipated. Groundwave propagation is significant on 2200-Meters.
    [ Hits: 30 | Votes: 1 | Rating: 10 ]
Radio Equipment : HF Amplifiers : Heathkit SB-220 Radio Equipment : VHF-UHF Mobile : Icom IC-2300H
  • Icom IC-2300H Review - ICOM IC-2300H 2 Meter FM Transceiver A worthy successor to the IC-2200H, a popular high power 2 meter mobile rig QST review
    [ Hits: 442 | Votes: 1 | Rating: 10 ]
Technical Reference : QRP Projects : QRP CW Transceiver
  • 2N2/20 CW Transceiver - 2N2/20 - A 20 Meter, Discrete Component CW Transceiver Built Manhattan-style
    [ Hits: 363 | Votes: 0 | Rating: 0 ]
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