Automatic Antenna Tuner Operation - Yaesu FT-857 Operation Manual

FC-30 A
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-
c a l l M e n u M o d e N o - 0 8 5
[ 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.
FT-857 Operating Manual
T
RANSMITTER
A
UTOMATIC NTENNA
O
PERATION
T O
UNER PERATION
Contral Cable
(Supplied with FC-30)
Coaxial Cable
(Supplied with FC-30)
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