3-9
Recommended procedure:
The squelch taper on a dual conversion receiver looks as follows:
Squelch knob position Squelch setting
12 o’clock
0.5uV
3 o’clock
1.2uV
3:30 position
2.5uV
4 o’clock
3uV
Fully clockwise
9uV
It is recommended that the squelch be set to at least 2.5uV (3:30 knob position) at
busy airport locations. If ACARS signals are present on adjacent or nearby channels the
squelch level should be at least 3uV (4 o’clock) to prevent ACARS bleed through.
(4)
The VOLUME control can then be adjusted in a clockwise direction to increase the
audio level, or in a counter-clockwise direction to decrease the audio level which can
be heard on the internal loudspeaker.
NOTE
When an external loudspeaker or headset is connected
to the SPEAKER/PHONE jack of the transceiver, the
internal loudspeaker is automatically disconnected. The
VOLUME control will now control the audio level
applied to the external loudspeaker or headset, as
applicable.
(5)
Refer to paragraph 3.4 for Front Panel Keypad Operation and additional Operating
modes.
3.3.4 Switching OFF
To switch off the transceiver:
(1)
Set the POWER ON/OFF on transceiver to switch to OFF.
(2)
Verify that all indicator LED's on the front panel are OFF.
NOTE
When the transceiver is switched OFF there is no
current drain in the External DC operating mode.
Unless unit is set to charge batteries there is no current
drain in the AC operating mode (Refer to Paragraph
3.7.1).
There is no current drain if unit is left in battery mode
and unit is not set to charge.
Summary of Contents for TiL-91-DE/S
Page 6: ...1 2 Figure 1 1 TPS 250 Portable Transceiver General View Closed Open View...
Page 7: ...1 3 Figure 1 2 Transceiver Front Cover Assembly...
Page 14: ...2 2 Figure 2 1 Battery Installation and Removal...
Page 18: ...2 6 Figure 2 2 Fixed Channel Jumper Locations...
Page 20: ...2 8 Figure 2 3 Remote Operation Jumper Locations...
Page 25: ...3 2 Figure 3 2 Transceiver Front and Rear Panel Layout...
