Walter Drake SW8 - Manual (Page 24)

AUTOMATIC BANDWIDTH SETTING WITH MODE
SELECTION DISABLE (ENABLE)
The SW8 permits automatic setting of the bandwidth
appropriate for each mode of detection. For example,
the 6.0 kHz bandwidth would be selected automatically
for AM mode operation; the 2.3 kHz bandwidth would
be selected for SSB mode. Of course, pressing the
BW
6
button temporarily overrides the automatic
setting until a mode change is made. The setting,
automatic or manual bandwidth selection with mode, is
held in nonvolatile memory and is not lost during
power loss or during battery changing. To disable the
automatic bandwidth with mode,
With POWER OFF,
Press and hold the
BW
6
button while pressing the
POWER button to put the SW8 in the POWER ‘ON’
mode.
To enable the automatic bandwidth selection with
mode operation, repeat the same procedure.
The SW8 has several special features that are referred
to in the main body of this Owner’s manual but may
require additional explanation.
LOCK ALL ENTRY TO KEYPAD
The receiver keypad and tuning control may be locked
or disabled by pressing and holding the
F
button for
3 seconds.
Press the
F
button and hold for 3 seconds. Ac-
knowledge beep will indicate that the keypad and
tuning control are locked.
Repeat the procedure to unlock the keypad and tuning
control.
10 kHz/9 kHz BROADCAST BAND TUNING STEP
SIZE
In the AM broadcast band, the SW8 increments the
frequency in 10 kHz steps when pressing the
or
buttons.
The 10 kHz step size is practical for tuning the U.S. and
Canadian broadcast bands. The step size can be
changed to 9 kHz to permit practical tuning of Euro-
pean broadcast stations. The tuning step size is held in
nonvolatile memory and thus is not lost during power
failure or battery changing. To select the alternate step
size,
With POWER OFF
Press and hold the
BCB
1
button while pressing the
POWER button to put the SW8 in the POWER ‘ON’
mode.
If the step size was 10 kHz prior to performing the
above procedure, then the 9 kHz step size for the
broadcast band is now programmed. To change back
to 10 kHz, repeat the same procedure.
DELETE ALL MEMORY CHANNELS
If it is desired to delete all programmed memory
channels, perform the following procedure:
With POWER OFF,
Press and hold the
DEL
0
button while pressing the
POWER button to put the SW8 in the POWER ‘ON’
mode.
Hold the
DEL
0
button until a confirmation beep is
heard to indicate that ALL memory locations have been
cleared.
18 Special Use Features and Functions