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Antenna A and B mixup on RSP 2

Posted: Sat Dec 16, 2017 6:38 am
by Ambrose Wolfinger
Hello everyone, I have an RSP 2 Pro I recently purchased. I have been using a long wire antenna plugged into the hi z port. However, as an experiment, I plugged a hand held antenna into the antenna B port. With antenna B selected in SDR Uno I don't receive anything, but if I select antenna A, I can receive signals on HF and VHF. Likewise, if I plug the antenna into port A, I have to select antenna B in SDR Uno.

Re: Antenna A and B mixup on RSP 2

Posted: Sun Dec 17, 2017 11:15 am
by DF1KZ
Hello Ambrose,

Did you terminate Input A with 50 Ohms or did you leave it open?
Imho there is some (weak) internal coupling between the ports.

Wolfgang

Re: Antenna A and B mixup on RSP 2

Posted: Sun Dec 17, 2017 3:43 pm
by Ambrose Wolfinger
I left it open, however last night I was able to measure 6.4 volts across the antenna a terminal with the Bias T activated. I contacted the support team and they offered several options including me opening the unit and swapping the terminals without affecting the warranty. This seems to be the simplest solution.