Becker Avionics
Operating Instructions
Menus
0638.420-071 Issue 06 02/2021
VHF Transceiver
33
•
A long push (>2 s) on "MDE" key starts the user menu.
•
The menu has two pages:
o
BRIGHTNESS
o
SQUELCH TRH
•
A short push on "MDE" key or the rotary encoder changes the
pages.
BRIGHTNESS:
•
The display shows the active frequency in the top line.
•
The adjustable value is shown as bar graph and as numerical
indicator in the bottom line.
•
The brightness is adjustable from 0…100 (rotary encoder).
o
0, illumination is off.
o
100, maximum brightness.
Notice:
This page is not available if the dimming input is set to 14 V or 28 V in the
configuration setup*.
For this adjustment, the dimming circuit controls the brightness
parameters.
SQUELCH TRH:
•
The display shows the active frequency in the top line.
•
The adjustable value is shown as bar graph and as numerical
indicator in the bottom line.
•
The squelch threshold is adjustable from 6…26 (rotary
encoder).
o
6, very weak signals are audible with high noise content;
squelch opens at about -105 dBm.
o
26, only quite strong signals are audible with low noise
content; squelch opens at about -87 dBm. The receiver
sensitivity is very decreased.
Cancel the menu:
•
Automatically after 5 seconds timeout.
•
Another long push (>2 s) on "MDE" key.
•
A short push on the rotary encoder when the "SQUELCH
TRH" page is started.
* For details please refer to related manual:
http://www.becker-avionics.com/manuals/
Communication
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VHF Transceiver
