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Bending the antenna "arms" won't change feedpoint impedance unless the two 1/4 lengths become parallel to each other, then the system may start to act as a transmission line instead. Can you provide a better description. I suspect you are looking at the 3 to 30 MHZ region and I suspect...
The bandwidth of simple antennas, even with a good width to length ratio at VHF is not going to be sufficient to cover 20 MHZ. Broadcast TRANSMIT antennas are fixed frequency and their bandwidth goal is
determined by the width of the transmitted signal. Broadcast receive antennas with wide...
In the states it is called "BPL" and we over the air users have made sure it won't be deployed without protecting the HF spectrum from pollution. The power companies claimed "notch filters"would work. They didn't.
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