Hi all, Hoping someone has seen this before
Did the first flight of my RV-3 today. With the egine running I'm getting a lot of static/crackling. The squelch, VOX and radio volume adjustments work normally but have no effect on the crackling. Interestingly, its the headset volume that lowers /raises the crackling volume ?
This crackling seems to be independant of the radio ? Can it have something to do with the headphone jack wiring ? I have used the shielded wiring. I've used plastic washers between the panel and the mic and phone jacks..should the body of the headphone jack be grouned ?
Switching mags off one at at time, alternator and boost pump off have no effect. The jacks are within 3-4 inches of the radio with the antenna mounted in the belly fwd of the spar. Coax is about 2 feet long.
Any help would be much appreciated.
Thanks
Mike
Did the first flight of my RV-3 today. With the egine running I'm getting a lot of static/crackling. The squelch, VOX and radio volume adjustments work normally but have no effect on the crackling. Interestingly, its the headset volume that lowers /raises the crackling volume ?
This crackling seems to be independant of the radio ? Can it have something to do with the headphone jack wiring ? I have used the shielded wiring. I've used plastic washers between the panel and the mic and phone jacks..should the body of the headphone jack be grouned ?
Switching mags off one at at time, alternator and boost pump off have no effect. The jacks are within 3-4 inches of the radio with the antenna mounted in the belly fwd of the spar. Coax is about 2 feet long.
Any help would be much appreciated.
Thanks
Mike