1- The 40m calling freq has been in use for some time this eve- I am guessing someone did not QSY and is chatting/messaging/transferring files. Is there a way to decode and identify the stations?
2- When you broadcast is it decoded only on calling freq or chan you are tx on or do all channels rx the broadcast?
Clifford - KK6QMS
The broadcast is sent on the slot you are on.
The only way to (occasionally) see traffic is by using a 2nd copy of vara-hf in monitor mode, as explained in the docs.
Since VarAC limits traffic on the calling freq to 3 minutes, you may have been experiencing qrm from WINLINK stations which are also on or near that freq, often with WIDE signals, caused by the fact that they use faster transfer rates.
Enable a monitoring VARA. Look under VarAC settings and follow the instructions.