Operation
Becker Avionics
Brightness
56
RCU6512
DV17551.03 Issue 03 June 2020
3.7 Squelch (SQL)
This function operates independently of the selected operation menu.
•
A short push on "SQL" key changes the function to "ON" or "OFF".
+
Squelch "ON"
•
If the squelch function is active ("ON") the audio noise is muted.
Squelch "OFF"
•
If the squelch is "OFF" the audio noise is audible as long as the signal is
received.
Squelch Threshold
The squelch threshold is adjustable* to an applicable trigger level.
* For details please refer to: "Start Configuration Mode" page 37
→ Squelch threshold level
("RT SQL_LEVEL").
3.8 Channel Spacing
The transceiver can operate in 8.33 kHz and 25 kHz frequency channel spacing.
* For details please refer to: "Start Configuration Mode" page 37
→
"Channel spacing
("CU SPACING").
25 kHz
channel spacing
•
In 25 kHz mode, 5 frequency digits are shown.
o
Only operating frequencies with a channel spacing of 25 kHz are selectable.
o
This mode has a faster tuning, because it does not show the 8.33 kHz
frequency steps.
8.33 kHz
channel spacing
•
In 8.33 /25 kHz mixed mode 6 frequency digits are shown.
o
The transceiver tunes to all possible frequencies in the aviation
VHF frequency band.
•
The selection of 8.33 kHz channels is possible up to 136.99166 MHz
(channel name 136.990).
•
For frequencies > 136.99166 MHz only 25 kHz channels are selectable.
3.9 Brightness
The brightness of the LCD and push-button illumination can be adjusted in "Configuration Mode"*.
* For details please refer to: "Start Configuration Mode" page 37
→ "BRIGHTNESS"
127.000
118.005
SQL
127.000
118.005
127.
00
118.00
SQL
127.0
00
118.000
SQL
