Yaesu VX-177, Руководство по эксплуатации

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VX-177 O
PERATING
M
ANUAL
66
C
HANGING THE
TX D
EVIATION
L
EVEL
In many areas of the world, channel congestion has required that operating channels be
closely spaced. In such operating environments, it often is required that operators use
reduced deviation levels, so as to reduce the potential for interference to users on adjacent
channels. The
VX-177
includes a simple method of accomplishing this:
1. Press the [ F
] key, then press the [
0
(
SET
)] key to enter the Set mode.
2. Rotate the DIAL knob to select Set Mode Item 51:
WID.NAR
.
3. Press the [
F
] key momentarily to enable adjustment of this Set
Mode Item.
4. Rotate the
DIAL
knob to set this Set Mode Item to “
NARROW
.”
In this configuration (HALF DEVIATION active), the
transmitter’s deviation will be approximately ±2.5 kHz, and the
received audio output level will be increased, for easier listen-
ing on the narrow signal.
5. When you have made your selection, press the
PTT
switch to save the new setting and
exit to normal operation.
The “normal” setting for the deviation (when this Menu Item is set to WIDE) is ±5 kHz.
M
ISCELLANEOUS
S
ETTINGS