HXr altitude readout fluctuation with PTT radio
Posted: Mon Feb 21, 2022 5:09 pm
I have an Arion Lightning I purchased recently with GRT HRx PFD and autopilot installed in 2013 at Arion Factory. Each time I push the PTT on either control stick, the altitude readout jumps into a wild descent, then a climb. I am also getting quite a bit of static on the COM with squelch off especially at altitude.
The autopilot disconnects as expected when the altimeter misbehaves.
I have attempted to modulate any RF from the alternator by placing ferrite beads around the alternator cable and battery grounds as per Clouddodger. No success, in fact, I then developed a whine in the headsets at 1600 rpm and above, so I removed them (they did not correct the apparent interference with the PTT and the altitidue readout).
Any suggestions?
Thanks,
Scott
The autopilot disconnects as expected when the altimeter misbehaves.
I have attempted to modulate any RF from the alternator by placing ferrite beads around the alternator cable and battery grounds as per Clouddodger. No success, in fact, I then developed a whine in the headsets at 1600 rpm and above, so I removed them (they did not correct the apparent interference with the PTT and the altitidue readout).
Any suggestions?
Thanks,
Scott