So I bought one of these:
JL Audio CL-SES CleanSweep
The theory was pretty good, I think. I wanted to use my XM satalite radio, and my Garmin Nuvi on the same Aux input. With the above anytime my Nuvi made a sound the "clean sweep" would automatically switch over to the nuvi. My main reason for the purchase was to use the Nuvi as a hands free device, and have it go through my stereo and return to Sat radio when done.
It works flawlessly.....when the other person is talking. The audio signal sent from while the otehr party talks causes the input to change, unfortunatly while i'm talking there is no audio signal sent so it switches back to the SAT radio.
Does anyone have any ideas to keep a constant audio signal sent while connected to a call, and then have it stop when i hang up?