I've made a few improvements since my earlier patches. The FM Hell receiver now produces "fuzzy" output, which will no doubt be much more readable under heavy QRM. With that, I'm considering the FM Hell modem "done", and hopefully won't have to make any more changes to it.
Perhaps more importantly, I have made it possible to freely select the audio frequency in Olivia mode (it is no longer glued to 500 Hz). I am still working on the reverse mode, I've got transmit working but receive is proving much more difficult.
Apply the patch to a clean copy of gmfsk-hkj-48.
So, any thoughts about this?
-Joe, KD8ATU
