Yaesu FT-270R, Руководство по эксплуатации

Страница: 19 / 88

FT-270R 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
FT-270R
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 transmission.
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 oper-
ating 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/L
] 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 FT-270R 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/L] key, then press the PTT switch, to cause the FT-270R to transmit (temporarily) on
High power. After one transmission, the power level will revert to the previously-selected
(“Low” or “Medium” power) setting.
“ L
OW
” P
OWER
“ M
ID
” P
OWER
“ H
IGH
” P
OWER