Fausto,
as the length of the line (20m) is only a very small part of the wavelength (less than 1% at 137kHz) the impedance does not matter too much.
But after the variometer you will have a very high voltage (can be 10kV or more, depending on antenna capacitance, loss resistance and power), so the line must be capable to handle this voltage.
73, Rik ON7YD - OR7T
Hello,
A question for RF expert:
you think that i can connect a Marconi antenna and relative gound system to the variometer with a high impedance ladder line?
This because i need to have all the tuning equipment indoor and the tower that support the vertical part
of the antenna is about at 20 meters to the home.
Thanks in advance for answer
Fausto IK4NMF
