SWR values for some bands are strange

Rolandas LY0NAS All Messages By This Member #3365 I'm using automatic tuner in the balcony to long wire antenna. Coax is ~10m. After tuning in different bands it shows higher than usual SWR value (close to 3:1), when tuner (Z-11ProII) shows it is less 2:1. I'm using chock balun after tuner and other (1:1 current) before tuner. Mostly SWR shown wrong in higher bands (17,15,12,10m). Antena wire is ~32m and counterpose ~7.5m. I checked with external SWR meter (newr HL2) - it shows <2:1.
Rolandas LY0NAS All Messages By This Member #3379 Probably common mode current problems. :-(

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