(if it lights steadily, the battery has less than 2 hours of power remaining and should be replaced). If your system contains either a CR77 receiver,
one of the "A/B Receiver" LEDs will light, showing you whether the (left) "A" or (right) "B" receiver is currently being used. The CR77 meter will also
indicate the strength of the incoming RF signal.
9.
Level or AF Level knob on the receiver fully clockwise; this is unity gain.