FCC ID: K66FT-857
Operating Manual
Vertex Standard Co., Ltd.
88
3. Fold the top cover centering around the carrying hand side from the main chassis.
4. 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).
5. Replace the top cover and its eight screws (remember to replace the internal speaker’s plug), then connect the DC
cable to the INPUT jack when operating the FT-857 with a DC power supply or optional FP-30 AC power supply.
6. Press the MEM/VFO CH knob momentarily, then rotate the DIAL knob to change the setting of menu to “2.3” (if you
installed the YF-122S) or “500” (for YF-122C).
7. Press and hold in the [F] key for one second to save the new set-up and exit to normal operation.
8. Filter installation is now complete.
To use the optional filter, press the [B](2.3 or 500) key (in Multi Function Row “n” [CFIL, 2.3 or 500, 2.3 or 500]) to
activate the optional filter which is installed in the “FIL1” slot. Press the [C](2.3 or 500) key (in Multi Function Row “n”
[CFIL, 2.3 or 500, 2.3 or 500]) to activate the optional filter which is installed in the “FIL2” slot.
Note: If you wish to use the optional filter for the TX IF filter while operating in the SSB mode, change the setting of
Menu Mode No-086 [TX IF FILTER] to “FIL1” or “FIL2” (the slot into which you installed the optional YF-122S filter).
Optional High Stability Reference Oscillator TCXO-9
Optional High Stability Reference Oscillator TCXO-9
The TCXO-9 provides high stability over a wide range of ambient temperatures, so as to enhance digital-mode operating.
1. Turn the transceiver’s power off by pressing and holding in the POWER switch for one second, then disconnect the
DC cable from the INPUT jack on the rear panel of the transceiver, when operating the FT-857 with a DC power
supply or optional FP-30 AC power supply.
2. Referring to Figure 1, remove the eight screws affixing the top cover of the transceiver then disconnect the speaker’s
connector from the MAIN Unit.
3. Fold the top cover centering around the carrying hand side from the main chassis.
4. Referring to Figure 2, locate the factory-installed REF UNIT on the board. Remove the factory-installed REF UNIT
from the board, then position the TCXO-9 so that its connectors are aligned with the mounting pins on the board, and
push it into place.
5. Replace the top case (remember to replace the internal speaker’s plug).
6. TCXO-9 installation is now complete. Connect the DC cable to the INPUT jack when operating the FT-857 with a DC
power supply or optional FP-30 AC power supply.
Appendix
Setup of Memories for Low Earth Orbit (LEO) FM Satellite Operation
Although the FT-857 is not capable of “full duplex” operation (simultaneous transmission and reception), its flexible