Yaesu VX-170, Руководство по эксплуатации

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VX-170 O
PERATING
M
ANUAL
15
O
PERATION
T
RANSMISSION
Once you have set up an appropriate frequency inside the 144 MHz Amateur band on
which the
VX-170 can transmit, you’re ready to go on the air! These are the most basic
steps; more advanced aspects of transmitter operation will be discussed later.
To transmit, press the
PTT
switch, and speak into the
front panel microphone (located in the lower left-hand
corner of the speaker grille) in a normal voice level.
The
TX/BUSY indicator will glow red during trans-
mission.
To return to the receive mode, release the PTT switch.
During transmission, the relative power level will be
indicated on the bar graph at the bottom of the LCD; full scale
deflection confirms “
High Power ” operation, while deflection
of two bars indicates “
Low Power
” operation. Five bars indicate
“ Medium Power ” operation. Additionally, the “ LOW ” icon will
appear at the bottom of the display while operating on the “
Low
Power ” and “ Medium Power ” settings.
1) If you’re just talking to friends in the immediate area,
you’ll get much longer battery life by switching to Low
Power operation, described in the next chapter. And don’t
forget: always have an antenna connected when you transmit.
2) Transmission is possible only on the 144 MHz amateur band.
Changing the Transmitter Power Level
To change the power level:
Press the [ F
] key, then press the [
3
(
LOW
)] key. The
LCD shows the current power output level.
Rotate the DIAL knob to select the desired power out-
put level. Available selections are “
HIGH
” (5 W), “
MID
”
(2 W), and “ LOW ” (0.5 W).
When you have made your choice, press the
PTT
switch
to save the new setting and return to normal operation.
1) The VX-170 is smart! When you store memories, you can store the power
output settings separately in each memory, so you don’t waste battery power
when using very close-in repeaters!
2) When you are operating on the “Low” or “Medium” power setting, you can press the
[F] key, then press the PTT switch, to cause the VX-170 to transmit (temporarily) on
High power. After one transmission, the power level will revert to the previously-se-
lected (“Low” or “Medium” power) setting.
“ L
OW
” P
OWER
“ M
ID
” P
OWER
“ H
IGH
” P
OWER