Yaesu FT-450D Manuale Utente

Pagina di 102
Page 54
FT-450D O
PERATION
 M
ANUAL
PHONES
KEY
B
ASIC
 O
PERATION
1. Press the [BAND
]/[BAND] buttons to select
the 28 MHz or 50 MHz.
Note: FM is only used in the 28 MHz and 50 MHz
Amateur bands covered in the FT-450D. Please
do not use FM on any other bands.
2. Press the [MODE
]/[MODE] buttons to select
the FM mode.
3. Rotate the [MAIN DIAL] knob to adjust the oper-
ating frequency.
If you use the MH-31
A8J
 (or MD-100
A8X:
 option),
you may adjust the operating frequency by the
[UP]/[DWN] buttons on the microphone.
4. Press the microphone’s PTT (Push To Talk)
switch to begin transmission. Speak into the mi-
crophone in a normal voice level.
The “
” icon will appear in the display, con-
firming that transmission is in progress.
5. Release the PTT switch at the end of your trans-
mission. The transceiver will return to the receive
mode.
FM M
ODE
 O
PERATION
N
OTE
:
 In the FM mode, the squelch circuit is set to the
threshold point automatically.
However, when turn the [SQL/RF GAIN] knob
counter-clockwise, the squelch circuit is turned
off.
Keep the [SQL/RF GAIN] knob always clockwise
position.
You may change the [SQL/RF GAIN] knob from
the RF GAIN function to the squelch function via
Menu item SQL/RFG.
 At the factory, a microphone gain has been pro-
grammed that should be satisfactory for the sup-
plied MH-31
A8J
 Hand Microphone. If you use an
after-market microphone, you may wish to set a
different Microphone Gain Level, described pre-
viously (Microphone Gain Level Adjustment: see
page 39)
[MAIN DIAL] knob
[BAND
]/[BAND] button
[MODE
]/[MODE] button
N
OTICE
Regarding of the [DSP/SEL] knob
The [DSP/SEL] knob is used for operating
various functions depending on the situation.
If you can not change the frequency/memory
channel by tuning the [DSP/SEL] knob, the
[DSP/SEL] knob is selected to operate of one
of the DSP functions.
In this case, press the [DSP] button several
times until the “>” icon disappears from the
DSP Graphic Display.