ground plain

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ground plain

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Antennas : 80M

  • 80 Meter Shortened Ground Plain Antenna - This antenna is a vertical loop antenna mounted on a 8 meters high grounded mast with an input impedance of 50 Ohms without a matching device
    [ Hits: 443 | Votes: 1 | Rating: 5 ]
Antennas : Dipole
  • Horizontal Half-wave Dipole above a Counterpoise - All antennas that are situated close to the ground are affected by that ground to some extent. This article explain effects and benefits of counterpoise.
    [ Hits: 1271 | Votes: 0 | Rating: 0 ]
Antennas : Portable
  • Portable Vertical Antenna - A home made portable vertical antenna, that with a single 1/4 wave counterpoise wire is possible to achieve less than 1.5:1 SWR on 40, 30, and 20 meter bands. It is basically a center load, shortened ground plain vertical antenna.
    [ Hits: 362 | Votes: 0 | Rating: 0 ]
Antennas : Vertical
  • Modified Ground Plane Antenna Adds Second Band - This article explains the trick of how to shorten and lengthen pairs of radials to make a 2-band ground plane antenna. Included is a "Table of Multi-Band Possibilities" covering the range of 6 to 40 meters.
    [ Hits: 53 | Votes: 0 | Rating: 0 ]
Radio Equipment : VHF-UHF Handhelds Technical Reference : Grounding
  • Grounding HF Transceiver using Coax Cable - Improper grounding or earthing system can cause several unwanted RF interferences (RFI) to television sets, broadcast receivers, hi-fi sets and telephone sets. In this Article the author explain how to setup a proper radio shack grounding using coaxial cable and ceramic disc capacitor
    [ Hits: 1283 | Votes: 4 | Rating: 7.75 ]
Technical Reference : RF Design
  • SNR Signal to Noise Ratio - Signal-to-noise ratio is defined as the ratio between the desired signal, and the background noise. In this article, SNR is explained in the deep
    [ Hits: 357 | Votes: 2 | Rating: 2.5 ]
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