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Superloop III Antenna
The Superloop is the 30' length of ladderline hanging down from the center insulator. This length has been tuned so that appears to be a open circuit stub on 40 meters; thus the antenna becomes two full wave wires at 40 meters and is commonly referred to as the Bi Square antenna
post 24 Apr 2024
Antenna Delta Loop Links →
40 Meter Parasitic Delta Loop Array
On 40 meters, my experience is that you need at least 20 dB of F/B ratio in order to be able to turn down European broadcasters enough to be able to hear the west coast stations, especially the west coast stations with dipoles and 100 watts
Delta Loop per 50 Mhz
we will use the formula: L = 306.6 / F Mhz = 306.6 / 50.150 = 6.11 m. in practice we will have that each of the three sides will measure 2.04 m
Delta loop various configurations
The wave emitted by the vertical loopmay be polarized vertical or horizontaldepending on the feedpoint location vertical polarization is preferred when the antenna is low
55
On 40 meters, my experience is that you need at least 20 dB of F/B ratio in order to be able to turn down European broadcasters enough to be able to hear the west coast stations, especially the west coast stations with dipoles and 100 watts
we will use the formula: L = 306.6 / F Mhz = 306.6 / 50.150 = 6.11 m. in practice we will have that each of the three sides will measure 2.04 m
The wave emitted by the vertical loopmay be polarized vertical or horizontaldepending on the feedpoint location vertical polarization is preferred when the antenna is low
Take off angle of horizontal antenna For horizontal polarization, the electric field will move sideways on a horizontal plane, while for vertical polarization it will oscillate up and down on a vertical plane
Rx antennas 4Square Rx Vertical Array My frequency design of 1.825 MHz a 90 degrees line would be 33,70 metersinstead of the previously calculated 33,27 m
Calculo da Antena Bazooka A double bazooka antenna is a combination that has a complete coaxial wave multiplied by its velocity factor and a total end-to-end length of 1/4 wave for each side affected by another driver shortening facto