O. Sami Saydjari wrote:
I learned today that they do not make the KX-155A for 14 volt planes. My
installer said they could just pout a filter on the KX-155 radio to
prevent the interference with GPS. Does that make sense?

I am about to purchase a used KX-155/KI-209 Combo and have it installed.
I have a Garmin 430, so I want to make sure I am not going to run into
problems with my GPS.

Hi Sami,

I must have missed the posting to which you are replying, so I don't have the
context. I can say, however, that the KX-155 in my airplane certainly does
interfere with my handheld Garmin 196. Tuning the NAV side to either the FAY or
GSO VOR means a "lost satellite reception" message on the GPS. Perhaps a
certified GPS is less susceptible to interference.

If you installed radio first and then the GPS, the GPS would be tested for
interference during the installation, or at least that's how it used to be, I
think they've relaxed some of the installation requirements. It might be
worthwhile to ask the shop to do the interference test as if they were
installing the GPS.

Dave