Yaesu FT-950, Руководство по эксплуатации, Страница: 59 / 132

Page 57 FT-950 O
PERATING
M
ANUAL
SSB/AM M
ODE
T
RANSMISSION
A
DVICE
:
ˆ ALC meter deflection may be caused by excessive drive
power, but also by reflected power detected in the an-
tenna system. If the impedance presented to the trans-
ceiver is different from 50 Ohms, ALC meter action
may be observed that is not related to the proper set-
ting of the [
MIC GAIN
] knob. Therefore, we recom-
mend that you make the [ MIC GAIN
] knob adjustments
into a dummy load or antenna system presenting im-
pedance very close to 50 Ohms.
ˆ In the SSB mode , you may set the desired power out-
put via the Menu item “
111 TGEN TX PWR 111 TGEN TX PWR
111 TGEN TX PWR 111 TGEN TX PWR
111 TGEN TX PWR
”. The
adjustment range is between 5 Watts and 100 Watts.
You should always use the minimum power necessary
to maintain reliable communications.
ˆ When performing “on air” tests (such as the setup of
microphone gain), be sure to check the frequency be-
fore transmitting, to avoid interference to others who
may already be using the frequency.
ˆ Four techniques for exercising Transmit/Receive con-
trol are provided on the
FT-950 . You may choose the
technique(s) that best suit your operating needs:
€ Pressing the microphone PTT switch will engage
the transmitter.
€ The rear panel PTT jack may be connected to a
foot switch or other manual switching device in
order to engage the transmitter.
€ Pressing the front panel [ MOX
] button will lock
the transmitter on. Press the [ MOX
] button again
to return to receive.
€
The VOX (Voice Operated Xmit) circuit will en-
gage the transmitter automatically when you speak
into the microphone. For details of VOX opera-
tion, see page 66.
Adjusting the AM Carrier
[CLAR/VFO-B] Knob [MENU] Button
[SELECT] Knob
1. Press the [
MENU
] button to enter the Menu mode.
2. Rotate the [ SELECT
] knob to select Menu item
“
112 TGEN AM CAR 112 TGEN AM CAR
112 TGEN AM CAR 112 TGEN AM CAR
112 TGEN AM CAR
”.
A
DVICE
:
Press the [ SELECT
] knob to toggle the Menu item
display between “
112 TGEN 112 TGEN
112 TGEN 112 TGEN
112 TGEN
” and “
AM CAR AM CAR
AM CAR AM CAR
AM CAR
”.
3. Close the
PTT
switch. Do not speak into the mi-
crophone. Rotate the [ CLAR/VFO-B
] knob to ad-
just the PO meter reading is “
25 W 25 W
25 W 25 W
25 W
”.
4. Press and hold in the [ MENU
] button for one sec-
ond to save the new setting and exit to normal op-
eration.
PO Meter
[CLAR/VFO-B] Knob [MENU] Button
[SELECT] Knob
PO Meter
Adjusting the SSB TX Power Output
1. Press the [
MENU
] button to enter the Menu mode.
2. Rotate the [ SELECT
] knob to select Menu item
“
111 TGEN TX PWR 111 TGEN TX PWR
111 TGEN TX PWR 111 TGEN TX PWR
111 TGEN TX PWR
”.
A
DVICE
:
If necessary, press the [ SELECT
] knob to toggle
the Menu item display between “
111 TGEN 111 TGEN
111 TGEN 111 TGEN
111 TGEN
” and
“
TX PWR TX PWR TX PWR TX PWR TX PWR
”.
3. Close the PTT switch, and then rotate the [ CLAR/
VFO-B
] knob to adjust the desired power output
on the PO meter.
A
DVICE
:
A carrier will be transmitted regardless of the op-
eration mode setting.
4. Press and hold in the [ MENU
] button for one sec-
ond to save the new setting and exit to normal op-
eration.
A
DVICE
:
The TX Power Output setting cannot be stored in any
of the memory channels.
A
DVICE
:
The AM TX Power Output setting cannot be stored in
any of the memory channels.