Cub Crafters CC18-180 Pilot Operating Handbook page 190

SECTION 9.1 CUB CRAFTERS
SUPPLEMENTS-PM1000II CC18-180
9.1.7.1 Volume Control (1, 3)
Both pilot and copilot may transmit over the radio. The
PM1000II allows only the person who presses their PTT
(push to talk) to be heard over the aircraft radio. If both
pilot and copilot press the PTT at the same time, the
copilot will override. The pilot will regain priority by
switching the unit off.
The pilot's volume control knob (1) adjusts the loudness
of the intercom and music for the pilot's headset only. It
has no effect on aircraft radio volume level. The copilot's
volume control (3) adjusts the volume for the copilot.
9.1.7.2 Squelch Control (2, 4)
The PM1000II provides individual VOX circuits for the
pilot and copilot. The ability to adjust the trip level of
these VOX circuits (squelch control) allows the use of
dissimilar headsets without the frustration of clipping the
first syllables. The PM1000II has individual squelch
circuits for the pilot and the copilot. With the engine
running, set the squelch control by slowly rotating the
knob(s) (2) and (4) clockwise until you no longer hear the
background noise in the earphones.
When the microphone is positioned properly near the lips,
normal speech levels should open the channel. When the
crew member stops talking, there is a delay of about one
second before the channel closes. This prevents squelch
closure between words, and helps eliminate choppy
intercom conversations.
9.1.7.3 Mode Selector
REPORT TC10000AFM
Issued: 5/31/05
Page number 9-1-4 Date of revision: 12/06/05