Yaesu FT-857D Mode D’Emploi

The optional FC-30 Automatic Antenna Tuner provides automatic tuning of a coaxial line
so as to present a nominal 50 

W impedance to the FT-857’s HF/50 MHz antenna port.

Before operation can begin, you must instruct the FT-857’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-857 per the illustration,

then turn on the transceiver’s power again. Do not
set up the FC-30 and FT-857 before changing
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-

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[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.

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Coaxial Cable

(Supplied with FC-30)

Contral Cable

(Supplied with FC-30)

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