My Arrow radios are so noisy I can't hear the transmissions. Both radios, all frequencies. Not a squeal, but kind of like very loud egg frying. Strangely, it's ok on the ground with the engine running. But it starts about 5 minutes after leveling off at 3,000 ft and doesn't quit until reducing the power to land.
What should I be looking for?
What should I be looking for?
