I think you may find , the new 'Chat' application , quite novel, in that it gives access to the modem at all speeds , but , I for one cannot type that fast ! , running the 'chat app , calls the vara modem ,
Chat provides the Rig control , via CAT or Com-ptt and the modem , the audio interface and tune button , now a single 1500 Hz test tone .The new modem has improved low signal performance , this with the arq function , makes for low power error free qso's , at power levels much reduced from the days of amtor
Though not intended , the unlicensed [free for all] modem runs to 175 baud level 3 , min being 40 baud , ample for qso , but notably , for the qrp users , the modem remains MFSK as is the ACK frame , being phase continuous , allows it to be passed via non linear systems , ie , class E/D power stages , which will be of interest to the low power / battery emergency situations ,
Entering a valid key , enables the faster levels, which are ofdm and require linear handling.
Might be of wider interest to list possible watering holes for 'vara chat' ? first over the pond might be a start !