So I'm trying to use APRSdroid in AFSK Speaker/Mic mode to send/receive APRS packets over VHF. I managed to get to where I can send packets from the phone, but the phone is completely incapable of receiving them. I suspect this is because of all of the fancy DSP that is attached to the microphone input (via the headset jack), so I wanted to try to disable these functions.
Oddly if I use the aural microphone it works just fine, but much to the detriment of everyone around (including me) who must listen to 1200 baud AFSK all day long.
Long story short, is there a way to disable any DSP magic that might be going on with the headset microphone input?