[op25-dev] rx.py Airspy MASTER GAIN Setting option?????

Trying to test out an AIRSPY R2 and the signal level v. an RTL is not even close. I've got -N options for LNA, MIX, IF, but what is the option for the MASTER GAIN? I've tried MAS, MASTER in the -N option, no change in the signal. I've tried -g as well no joy. Example: ./rx.py --args 'airspy' -N 'MASTER:50,IF:10,MIX:5,LNA:50' -S 2500000 -f 769.55625e6 -v 7 -T P25PC.tsv -q 2 -V -2 -U -x 2 2>> airspy.log ./rx.py --args 'airspy' -N 'IF:10,MIX:5,LNA:15' -S 2500000 -f 774.55625e6 -v 7 -T P25PC.tsv -q 2 -V -2 -U -x 2 2>> airspy.log What is the CORRECT method to set the MASTER GAIN of the Airspys, using something else its set to 14 for a good signal. Thanks.