About The Rear Panel - Yaesu FT-891 Operating Manual

About the Rear Panel

① ②
⑨
GND
Use this terminal to connect the transceiver to a good earth ground, for safety and
optimum performance.
Use a large diameter, short braided cable to make the ground connections.
Firmware update switch
Use this switch when updating the firmware. When a new firmware update for the
FT-891 is available, go to the YAESU website to download the programming data and
update the FT-891 to its newest state.
To update the firmware, connect the USB Jack
TUN/LIN
Connect the optional external antenna tuner "FC-50", "FC-40" or the linear amplifier
"VL-1000".
Connect a Linear Amplifier "VL-1000" with an optional "CT-58" Linear Amplifier
Connection Cable.
Connect an External Automatic Antenna Tuner FC-40,FC-50 with the control cable
supplied with the tuner.
NOTE: For details, refer to the Advanced Manual ( download from the Yaesu website ) .
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③ ④ ⑤ ⑥ ⑦
②
①
③
⑥
④
⑦ ⑧
⑤
⑧
to a computer.
① TX INH
② RESET (BAND D)
③ BAND C
④ RX D (BAND B)
⑤ TX D (BAND A)
⑥ GND
⑦ TX GND
⑧ +13V OUT
FT-891 Operating Manual
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