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FT-257 OperaTing Manual10
Transmission
Once you have set up an appropriate frequency inside the 430 MHz Amateur band on
which the
FT-257
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 right-hand corner of the speaker grille) in a normal voice level. The
TX
indicator will appears on the LCD 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 indication confirms
High Power” operation, while a display of two bars indi-
cates Low Poweroperation. Six bars indicate Medium
Poweroperation. Additionally, the
LOW
icon will ap-
pear at 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 430 MHz amateur
band.
Changing the Transmitter Power Level
To change the power level:
Press the
[
LOW
]
key. The LCD shows the current power output level.
Press the
[
LOW
]
key (repeatedly, if necessary) to select the desired power output
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-257 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/MW] key, then press the PTT switch, to cause the FT-257 to transmit (tem-
porarily) on High power. After one transmission, the power level will revert to the
previously-selected (“Low” or “Medium” power) setting.
Operation
Low Power
Mid Power
HigH Power
honbun_130313.indd 10 2013/03/13 20:29:51
12


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