On 8-Sep-2006, "Robert M. Gary" wrote:

What could cause the KX-155 to put static through the headsets
even when its not the selected radio?


Could be a lot of things. I suggest more troubleshooting and providing more
info.

Are the headsets connected through an intercom?

Are the headsets the same make/model? Are they passive or ANR? If you use
different headsets does the problem go away?

Does the -155 seem to work properly otherwise?

Does changing the frequency on the -155 (both com and nav) have any effect?
How about changing the -155's volume settings?

On the possibility that the problem resides in the -155's display (that is,
the display is generating electronic noise) , try setting it so that few
"segments" are lighted on all four frequency indications, then with as many
as possible, and see if that has any effect.

Is the static present If you route audio to the cabin speaker?

Ther are probably a lot more simple tests you can do. Record what you try
and the results. If nothing else, the info will help an avionics tech track
down the problem more quickly, saving you some bucks.

-Elliott Drucker