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Yaesu FT-857D Manual

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71FT-857D Operating Manual
FC-30 AUTOMATIC ANTENNA TUNER OPERATION
The optional FC-30 Automatic Antenna Tuner provides automatic tuning of a coaxial line
so as to present a nominal 50 Ω impedance to the FT-857D’s HF/50 MHz antenna port.
Before operation can begin, you must instruct the FT-857D’s microprocessor that the FC-
30 is being used. This is done using the Menu Mode:
1. Press and hold in the
[
FUNC
]
key for one second to activate the Menu mode.
2. Rotate the SELECT knob to recall Menu Mode No-001
[
EXT MENU
]
, then rotate the
DIAL to change the setting to “ON” to enable the extended Menu Mode.
3. Rotate the SELECT knob to recall Menu Mode No-020
[
CAT/LIN/TUN
]
. The default
setting for this Menu is “CAT.” Rotate the DIAL to change the setting to “TUNER.”
4. Press and hold in the
[
FUNC
]
key for one second to save the new setting and exit, then
turn the transceiver off.
5. Set up the FC-30 and FT-857D per the illustration,
then turn on the transceiver’s power again. Do
not set up the FC-30 and FT-857D before chang-
ing the Menu Mode, item No-020
[
CAT/LIN/TUN
]
.
6. Press and hold in the
[
FUNC
]
key for one sec-
ond to activate the Menu mode.
7. Rotate the SELECT knob to re-
call Menu Mode No-085
[
TUNER/ATAS
]
. The default set-
ting for this Menu is “OFF.” Ro-
tate the DIAL to change the set-
ting to “TUNER.”
8. Press and hold in the
[
FUNC
]
key
for one second to save the new
setting and exit.
Operation is similar to the procedure for the ATAS-100/-120:
1. Press the
[
FUNC
]
key, as needed, to recall Multi Function Row “k”
[
TUNE, DOWN,
UP
]
.
2. Press the
[
A
](
TUNE
)
key to turn the FC-30 on. The “TUNE” will appear on the LCD.
3. Press and hold in the
[
A
](
TUNE
)
key to initiate automatic tuning. The FT-857 transmit-
ter will be activated, a carrier signal will be sent out, and the coils and capacitors in the
FC-30 will be selected/adjusted for optimum SWR. When tuning is complete, the trans-
mission will cease, and you will be ready for operation on this frequency.
Tuning data will be stored in the FC-30’s Memory system. See the discussion at
the nect page for details on how this works.
TRANSMITTER OPERATION
TRX
CAT
/LINEAR
CTRL
144MHz/430MHz
Coaxial Cable
(Supplied with FC-30)
Contral Cable
(Supplied with FC-30)
HF/50MHz
ANT
… 73 …


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