Stryker radio interference with garmin gps

I have a Stryker 497 hpc and for some reason while only in the RECEIVE mode it intermittently knocks out the satellite signal to my garmin gps.
If I transmit it has no negative effect at all.
It only shows up intermittently in the receive mode.
If I shut the radio off with in 3 or 4 seconds the signal returns.
I have tried it with3 different garmin gps all running at the same time and get the same results from all three?
Anyone have any ideas on how to fix this issue?

 

Never does it transmitting even under high power?
Just out of the blue on receive it loses satellite signal?
It’s the oddest thing…
Shut the radio off and everything comes back on.

 

Radio is hard wired in the over head and gps plugs in to the lighter socket so I don’t know?
I guess I will have to pull the lighter fuse and see if the radio goes out…

 

I can try it ?
But it never does it when I key up the mic
only when on receive and intermittent?
My other thought is to increase the space between the windshield mounted gps and the radio.