loop feed

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loop feed

14 links

Antennas : 2M

  • 14el 144MHz Plus2 LFA Antenna - 1 plus2 LFA Yagi 14 normal elements plus 2 additional reflectors. Loop feed means 50Ohm perfect match for minimal losses
    [ Hits: 1297 | Votes: 0 | Rating: 0.00 ]
Antennas : 30M
  • 30m vertical dipole - The 30 Meter Vertical Dipole is constructed from #10 stranded insulated wire available in most hardware stores. The feedpoint uses a T-section of PVC pipe. The coax loops through the PVC pipe to provide strain relief. by W1TR
    [ Hits: 1150 | Votes: 1 | Rating: 8.00 ]
Antennas : 40M : 40 meter Loop Antennas
  • 40 Meter Horizontal Loop - The 40 meter horizontal loop is constructed from #10 stranded insulated wire available in most hardware stores. The feedpoint uses PVC a pipe T-section. The coax loops through the T-section to provide strain relief by W1TR
    [ Hits: 1026 | Votes: 0 | Rating: 0.00 ]
Antennas : 80M
  • 80 Meter Vertical Loop - The 80 meter vertical loop is constructed from #10 stranded insulated wire available in most hardware stores. The feedpoint uses a 6 inch section of half inch diameter PVC pipe Article by W1TR
    [ Hits: 684 | Votes: 2 | Rating: 10.00 ]
Antennas : Antenna Calculators
  • Small Transmitting Loop Antenna Calculator - A free online calculator for making all of the calculations required to design and build small transmitting loop antennas, also known as magnetic loops by 66pacific.com
    [ Hits: 4547 | Votes: 14 | Rating: 8.07 ]
  • Circular Loop Antenna Calculator - This free online circular loop antenna calculator uses a wire grid method of moments formulation to model a single circular loop with a single feed point. The electric current is computed and used to construct the far zone radiation power pattern. The input impedance and directivity are also computed.
    [ Hits: 955 | Votes: 18 | Rating: 4.28 ]
Antennas : Delta loop
  • Full Wave Delta Loop at Low Height - Article using a full wave delta loop antenna at low height, feeding methods, performance reports on 1984 QST article by W1FB and W1SE
    [ Hits: 982 | Votes: 2 | Rating: 5.00 ]
  • Vertical Delta Loops - A excellent 31 pages presentation of how to build and setup vertical delta loops, giving attantion to performance, loop shape or optimal feeding point, includes many pictures and comparison vs dipoles or monopole antennas
    [ Hits: 888 | Votes: 1 | Rating: 10.00 ]
  • 70 MHz Delta Loop - A delta loop antenna project for 70 MHz, 4 metre band and the matching section to feed to 50 Ohm coax feed line
    [ Hits: 536 | Votes: 1 | Rating: 6.00 ]
Antennas : Feed Lines
  • Feeder Radiation - Connecting centre fed antennas, dipoles, yagis, rhombics, loops to coaxial cable, unless care is taken, it is not difficult to end up with feeder radiation resulting in power loss and the radiation characteristics changes
    [ Hits: 1651 | Votes: 1 | Rating: 1.00 ]
Antennas : Loop
  • Cheap antenna to make from 160m - 6m  pop - The antenna is nothing more than a simple 2.4 metre square loop drawing pinned to the internal brick wall of the spare bedroom. Yep, thats right, the inside wall of the spare bedroom - ideal for flat dwellers, hotel rooms or whinging neighbours, The loop has a simple switched inductance at the top of the square loop and uses a simple coaxial stub to tune the antenna. An additional variable capacitor placed across the feedpoint can be used to fine tune the resonance of the antenna, by Andy G0FTD
    [ Hits: 41504 | Votes: 21 | Rating: 7.67 ]
  • N6RK Loop Antennas - An improved feed network for loop-type receiving antennas article published in NCJ October 2009 issue
    [ Hits: 576 | Votes: 0 | Rating: 0.00 ]
Antennas : Magnetic Loop
  • CT1ETT Magnetic loop antenna - This magnetic loop is 78cm diameter, with the smaller Hertz loop for tuning. Feeding is by gamma match.
    [ Hits: 1895 | Votes: 1 | Rating: 10.00 ]
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: 491 | Votes: 1 | Rating: 8.00 ]
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