Gregory's Server@dtelder it's 50 ohms but it is longer, so the calibration plane needs to move.
|
2 comments
 @dtelder i'm not 100% sure myself about why it caused a frequency shift, but you may be right about it being part of the antenna. the ferrite beads along the thin coax are supposed to prevent RF currents from flowing along it, but it's not perfect. |
@tubetime
There is magic involved. I understand that not including the thin cable will affect levels and propagation delays.
But I don't understand why it changes the frequency with lowest swr.
Perhaps the cable is to be considered a part of the antenna?