ATR833S / P/N 833S-(Cxxx)-(Cxxx)
Operation and Installation
17
Document-Nr.: 01.142.010.71e / Revision:1.03
Range 0 - 9
The setting for the squelch depends on different factors. For motor
aircraft an initial higher setting is typically appropriate, gliders may use a
lower value. A lower number means higher input sensitivity. This allows
reception of weaker signals (radio stations at greater distance), but can
also result in pickup of own-aircraft radio interference sources (engine,
strobe lights etc.).
2.5.3 VOX
– Voice Activated Intercom
By briefly pressing the
SET
key twice, and then using the rotary knob,
the threshold volume
VOX
for intercom voice detection can be adjusted.
(Note: This is not related in any way to radio reception or squelch.)
VOX
defines the crew’s speech volume that is required to activate the
intercom functionality. The higher the value, the louder you need to
speak in order to activate the intercom.
Exception: VOX 0 corresponds to “always on”
The internal filter circuitry has the ability to distinguish between engine
noise and speech.
Range 0
– 9
The default squelch setting is 05. At higher values weak
signals will be suppressed.
