On 3/15/2019 7:08 PM, Holger Hannemann wrote:
Does anyone has experience with potential distortion when operating parallel
running open feeder lines?
Distortion requires a non-linear element in the signal path.
Transmission lines are inherently linear. There IS the possibility of
distortion in a ferrite core device used to transform impedance at
either end of the line. Air core transformers would not have this problem.
I think you're right to be concerned about crosstalk between multiple
lines running parallel to each other for these long distances, which
will be in addition to the crosstalk between antennas. In any event, you
will need serious filtering for amplifier harmonics just as with any
other multi-transmitter station.
73, Jim K9YC
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