[TowerTalk] Need help with A3S lookalike

[Yo3ctk]

Hi, I have a Czech antenna that looks exactly like an A3S. It is probably a 
clone. The problem is that this antenna is resonant about 200kHz down from 
CW band edge ON ALL THREE BANDS (14, 21 and 28). I got this antenna second 
hand.

I tried to shorten the elements as far as they go but it seems that the 
effect on resonance is marginal at best.

Now, I realize that few, if any of you have any experience with the exact 
model, but, given the resemblance with A3S mode, thought to ask for any 
hint. Thanks in advance.

73 de Mike, YO3CTK
YR7M team