I have a Garmin SL40 comm 1 and a Garmin 430W as comm2. For as long as it has been in the plane, the SL40 would frequently break squelch. It seems to occur on random frequencies. It may be immediately stopped by changing to a different (non occurring) frequency, and will immediately return on the original frequency or various other frequencies which it happens on.
I got fed up with it today and started pulling breakers in flight. Turns out the squelch break on the SL40 immediately and completely goes away when the 430W is powered off.
The 430W gps antenna is located in close proximity to the SL40 antenna; not sure if that may be relevant...
Where should I look to narrow down the cause?
I got fed up with it today and started pulling breakers in flight. Turns out the squelch break on the SL40 immediately and completely goes away when the 430W is powered off.
The 430W gps antenna is located in close proximity to the SL40 antenna; not sure if that may be relevant...
Where should I look to narrow down the cause?