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QRP Indoor Loop
For qrp operation with limited space
post 14 Feb 2024
Antenna Loop Links →
Receiving loop arials for 1.8 MHz
Localised noise in the receiver can be reduced by using a small loop aerial. Shielded coax loops
Sensitivity of Multi Turn Receiving Loops
The octoloop in the following example is a length of 25 pair telephone wire inside an octagonal loop shield of 3/4 hard copper pipe
Shielded Loop Antenna
The inner conductor travels from the feed tee around the loop and is connected to the outer conductor adjacent to the feed tee
Ham Radio Loop Antenna
In the space between the two ends a variable capacitor is placed and tuned to resonate at a specific frequency
Tableantenna invisible loop antenna
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Localised noise in the receiver can be reduced by using a small loop aerial. Shielded coax loops
The octoloop in the following example is a length of 25 pair telephone wire inside an octagonal loop shield of 3/4 hard copper pipe
The inner conductor travels from the feed tee around the loop and is connected to the outer conductor adjacent to the feed tee
In the space between the two ends a variable capacitor is placed and tuned to resonate at a specific frequency
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