Communications Support Forums

Has anyone seen this. We had a XPR4550, VHF, 1-25 watt mobile that was transmitting spurious power throughout the 120-130 MHz band. Traces it down to a GPS antenna cable pinched/abraded such that it was shorted.

We thought it was a one off, but recreated it on other 4550 and 5550 mobiles. The 5550's weren't as bad. They displayed a synthesizer lock error, but still transmitted off frequency.

Anyone else seen this?