Great but the beep at the beginning. 2nd Review after a while of use: While the transmission stream sounded fine, I don't quite get why there is a beep at the preamble of the transmission, couldn't it sound like the rest of the TX stream or could it be omitted? It seems to bother me because a actual radio TX I know if don't usually have a distinct sound at the beginning—in fact, it kind of sounds like my notification beeping sound.
One of a kind App. I like the idea very much. Could this be modified to act as a coupling to the Phone Audio so that a Smartphone could be used to connect with a Fax machine? If so you could add a RIP interface for documents and have the worlds first true Direct Smartphone Fax !!! Much money $$$ :-D
So much potential! Can't wait to connect this to an fm xmtr or walkie talkie to see if it works. Kinda wish you didn't have to press receive every time but not a big deal. I'm sure I'll be use the python code anyway.
I have a few ideas here, but.. My only limit is that it only allows text up to 250 bytes. It would be much nicer if I could transfer files, or at least an unlimited amount of text! I would support this any day!
Not working Tested the application with multiple phones, keep getting bad checksum error.
Works great and is reliable at up to 40 cm between two phones.
Initial version for Audio MODEM Android application.