Hi,
I had similar behavior when changing to FW 017. I had to go back to 15 then made a factory reset then made a power cycle. I then reboot the FW rev 17, made a factory reset and made a power cycle again to get workig everything. Hm... But it works well afterwards. I suppose it is due to the different data format which was changed between FW revisions.
About the AGC:
AGC is needed only in CW. In digi modes we need all the dynamic range without changing to work properly.
--
73 Bojan S53DZ
