Leo O'Farrell
Pre-Flight
On the past few flights the following issue emerges, usually after 20 or minutes of flight:
The sidetone is lost on all transmissions to the tower or center. They seem able to receive my broadcast transmission, but my voice doesn't seem to broadcast loudly. Calling up ground, tower, or NorCal is usually OK but after a while, I'm fiddling with the squelch to try and hear myself, even testing the intercom without an actual transmission.
Equipment: Old Cessna 172 with 50 Amp alternator; Cheapo push to talk; David Clark ANR headset; PS engineering audio panel; comm 1 is SL40; comm 2 XL250 GPS comm. This issue seems to occur using either radio but only after 20 or more minutes of flight.
I'm thinking I'll swap out the push to talk on the next flight, to see if that makes any difference.
Other troubleshooting ideas?
The sidetone is lost on all transmissions to the tower or center. They seem able to receive my broadcast transmission, but my voice doesn't seem to broadcast loudly. Calling up ground, tower, or NorCal is usually OK but after a while, I'm fiddling with the squelch to try and hear myself, even testing the intercom without an actual transmission.
Equipment: Old Cessna 172 with 50 Amp alternator; Cheapo push to talk; David Clark ANR headset; PS engineering audio panel; comm 1 is SL40; comm 2 XL250 GPS comm. This issue seems to occur using either radio but only after 20 or more minutes of flight.
I'm thinking I'll swap out the push to talk on the next flight, to see if that makes any difference.
Other troubleshooting ideas?