58
3. If the
c
key is pressed before the time-out, the squelch level will not be
updated and the original value will be restored.
NOISE BLANKER OPERATION
A noise blanker feature is available in the low band (29-50 MHz) version of
the Orion radio, which provides ignition noise filtering. The feature can be
enabled through either the pre-programmed menu selection or a pre-
programmed key on the control unit. The noise blanker state is remembered
through a power cycle and its state will be displayed at power-up (i.e.,
NB
ON
or
NB OFF
). The menu selection or the pre-programmed key will toggle
the state of the noise blanker and display the new state.
Menu Selection
Press
m
and then use the RAMP control
,
or
.
to scroll through the
selections until
NB ON
or
NB OFF
is displayed. Then press
m
to toggle
the noise blanker state (
NB ON
or
NB OFF
). After the display time-out (2
seconds) then press
m
again to save the new noise blanker state and return
to normal operations.
Pre-Programmed Keypad Key
Press the pre-programmed key and the display will indicate
NB ON
or
NB
OFF
. Press the key again to toggle the function.
TYPE 99 DECODE (Conventional Only)
If the Type 99 Decode Option has been pre-programmed, individual selective
calling is possible. The radio can now decode individual, group or super group
paging calls. Two sets of Type 99 paging codes must be pre-programmed into
the radio. When the radio decodes an appropriate Type 99 code sequence, an
alert tone and visual indicator is provided to the user. The receiver then
operates as a noise squelched unit until Type 99 is reset. Type 99 decode
continues to operate during this noise squelched period. The appropriate Type
99 alert tone will sound again if it detects a valid two-tone sequence.
Type 99 operation may be reset manually or automatically (pre-programmed).
Manual reset is achieved by briefly pressing
c
, if programmed. Automatic
reset, if enabled, occurs after a 30 second interval following the most recent
decode of a Type 99 tone sequence. Hook switch (pre-programmed) may also
enable or disable Type 99 decode. The pre-programmed key light will blink
when Type 99 is disabled by the hook switch.