Wickedstick173
Member
So the other day I taxied from the T-hangar across the field (towered airport) to a local FBO to have them do a compression check. All radio communications with the tower/ground controller were fine, no issues.
When I picked it up the next day and called ground to request taxi back to the T-hangars, I noticed a sort of squeal/buzzing in my headset when I keyed the mic to request taxi clearance. It wasn't super loud, but enough so that the Ground controller mentioned it to me in his reply. ODD, it wasn't there the day before.
Anyway, today I removed the cowl to check for any loose or broken connections to the alternator or plug wires since it just had the compression test done. Note: The pitch of the noise goes up and down with rpm. Anyway, I found nothing apparent in the engine area. Next I did a few transmit tests outside my hangar and noticed that it only occurs when I use the front seat push to talk button/trigger regardless of if its running or not running, BUT, transmission is perfectly clear with no noise whatsoever if I used the rear seat push to talk on the rear stick. (RV-8)
So, seems I have narrowed it down to the front stick's push to talk as a culprit, but so very odd that it showed up after picking it up from the fbo.
Sorry for the long winded explanation but what might be a good place to start looking into... wiring or ground to the front sticks connections? Is the switch on it's way out ?? I have Infinity Sticks with the trigger as the transmit.
Thank you in advance for any thoughts on how to fix it.
When I picked it up the next day and called ground to request taxi back to the T-hangars, I noticed a sort of squeal/buzzing in my headset when I keyed the mic to request taxi clearance. It wasn't super loud, but enough so that the Ground controller mentioned it to me in his reply. ODD, it wasn't there the day before.
Anyway, today I removed the cowl to check for any loose or broken connections to the alternator or plug wires since it just had the compression test done. Note: The pitch of the noise goes up and down with rpm. Anyway, I found nothing apparent in the engine area. Next I did a few transmit tests outside my hangar and noticed that it only occurs when I use the front seat push to talk button/trigger regardless of if its running or not running, BUT, transmission is perfectly clear with no noise whatsoever if I used the rear seat push to talk on the rear stick. (RV-8)
So, seems I have narrowed it down to the front stick's push to talk as a culprit, but so very odd that it showed up after picking it up from the fbo.
Sorry for the long winded explanation but what might be a good place to start looking into... wiring or ground to the front sticks connections? Is the switch on it's way out ?? I have Infinity Sticks with the trigger as the transmit.
Thank you in advance for any thoughts on how to fix it.