Thanks for your encouraging remarks.
Wifi is a possibility (although serial-to-wifi adapters are fairly pricey -- around $100) I belive they provide a telnet-like interface, so only the connection code would need to be modified. It also should be possible to make this work over serial usb, if your devices supports it. I probably will not be supporting iOS, though.
I've got a bluetooth audio transmitter on order, should be here this weekend. It cost about $30. I'll post a link later. My plan is to record the audio, but it should also be able to play the sound through the phone. I'm sure you'll still be able to use handsfree devices in serial mode, but adding audio will preclude using any other A2DP connections.
I definitely need to add a volume control and mute. I was fiddling around with the scanner at home last night and had the volume turned way down so as not to annoy my wife. Got it back in the car this morning and guess what? I had to pull over and fish it out of the glove box to turn it back up.
The million dollar question with audio/A2DP is the will the phone actually receive A2DP or another form of audio?? Most of the phones transmit audio in some form, not receive it.
I wish you success, I have Android and a few 396XT, 996XT and HP1 and would be interested in seeing how this all works out.
Assume you could also support the HP1, however, not sure if the HP1 display layout would be a bit of a challenge.
Maybe if you are lucky, Uniden will hire or bring you on as a consultant??
Or they may hate you because you are possibly cutting into their x36HP product line up?
Anyway, keep up the good work.
You may find this is a stepping stone to your big $$$$ making App on the Play Store that controls the WiFi refrigerator or microwave or some other thing you have not even considered yet!
If you could develop an Android App that could emulate AirPlay and work with all the iProducts capable home theater gear, you could possibly make the big $$$.