Setting power to 1 removed most of the noise and also the jump when switching to harmonics mode disappeared but it also resulted in yet another different oscillation pattern above 600MHz.
For measurements till about 400MHz power level 1 is for sure the best as the cable attenuation for both cables is very lineair, even for the RG58
Above 400MHz there is still a ghost hiding somewhere
The oscillation seems to be faster then the rotation speed from the cable length so there could be some capacitive factor involved.
For the cable model I use only a first order rotation with frequency. Should I add somewhere a cable specific capacity that accelerates and amplifies the rotation impact at higher frequencies?
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Erik, PD0EK
