PK-7 The mounting point is either

The mounting point is either a standard 5/8"-27 (RB2200) or 7/8"-27 (RB2200AT) threads

The sound quality of the CMIT 5 remains consistent even if the microphone is rotated on its axis

and square wave forms with pulse width modulation

Twist the frequency knob for smooth retro synth sweeps

brushed 2U faceplate sporting custom-milled aluminum control knobs

PK-7 The mounting point is eitherThe PK 7 power supply is housed in a rugged metal chassis and has the capacity to power up to 12 RS 701 headsets. It supplies 24 volts DC at 0. 4 amp to the system. The fully regulated, current limited unit also provides proper termination for the intercom system. The PK 7 features both short circuit and reverse polarity protection.