User & Installation manual
VHF- Communication Transceiver
Doc.-Nr.:
DE-3000-800100e
KRT2, KRT2M, KRT2RC
Revision 13.0
Jul. 2016
24 / 67
For engine driven airplanes an initial setting of 3-5 is recommended. For
gliders a setting of 2 is recommended. The lower the Squelch level value
the higher is the input sensitivity. A high sensitivity setting is susceptible to
noise from other sources like ignition strobe-lights etc.
Standard SQ-level is 3...5. Higher setting will suppress weaker
input signals. 01 = Squelch off, 02 = for long range. Squelch
does not influence the intercom system.
4.4.3 VOX
– Intercom Voice Trigger Level Setting
Pressing the AUD button twice enables the turning knob to change the
voice level which triggers the intercom.
The intercom voice trigger level must be set to a value which prevents
normal cockpit noise from being heard in the earphones. The intercom
system should only be activated when talking at a normal voice level into
the microphone.
The higher the trigger level the louder the voice must be in order to trigger
the intercom system.
VOX on condition is indicated by flag “v”.
VOXnn
Range: 01
– 10
The larger the value, the louder one must speak in order to
activate the Intercom connection.
VOX on condition is indicated by flag “v”.
For installation with loudspeakers set VOX to 10 to switch it
off.
4.4.4 Manual Intercom
With cockpit loud background noise or with uncompensated microphones
the Intercom can be controlled manually by using an external switch.
Therefore the VOX system must be activated permanently by selecting
VOX: 01.
To turn off the Intercom the talk switch (default closed) must be opened,
which will be indicated by “e”.
