Optional Filters:yf-122S, Yf-122C, And Yf-122Cn - Yaesu FT-857D Operating Manual

I
NSTALLATION OF
O F
PTIONAL
1. Turn the transceiver's power off by pressing and holding in the PWR switch for one
second, then disconnect the DC cable from the INPUT jack on the rear panel of the
transceiver.
2. Referring to Figure 1, remove the seven screws affixing the top cover of the transceiver
then disconnect the speaker's connector from the MAIN Unit.
3. Refer to Figure 2 for the mounting locations for the optional filters. Position the filter so
that its connectors are aligned with the mounting pins on the board, and push it into place
(these slots does not distinction for the installed filter).
4. Replace the top cover and its seven screws (remember to replace the internal speaker's
plug).
5. Filter installation is now complete. Connect the DC cable to the INPUT jack.
To use the optional filter, press the [ B ]( 2.3, 500, or 300 ) (in Multi Function Row "n") to
activate the optional filter which is installed in the "FIL1" slot. Press the [ C ]( 2.3, 500, or
300 ) key (in Multi Function Row "n") to activate the optional filter which is installed in the
"FIL2" slot.
Note: If you wish to use the optional filter for transmission while operating in the SSB mode,
change the setting of Menu Mode No-086 [ TX IF FIL-
TER ] to "FIL1" or "FIL2" (the slot into which you in-
stalled the optional YF-122S filter).
120
O
PTIONAL
: YF-122S, YF-122C,
ILTERS
DSP
DWN UP
TX/BUSY
MODE
BAND
Figure 1
A
CCESSORIES
YF-122CN
AND
Optional Filter
ê
MAIN UNIT
FIL-2
FIL-1
DSP
DWN
TX/BUSY
MODE
Figure 2
FT-857 Operating Manual
UP
BAND