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FTM-3100R/E Operating Manual
Rear Panel Connectors
Rear Panel
ANT Coaxial Socket
Connect a 144 MHz antenna to this type-M (SO-239) socket using 50-Ohm coaxial
cable and a type-M (PL-259) plug. Make sure the antenna is designed specifically for
use on the operating frequency.
EXT SP Jack
This 2-contact 3.5-mm mini phone jack provides receiver audio output for an optional
external speaker. The audio impedance is 4 Ohms, and the level varies according to
the setting of the front panel
VOL
control. Inserting a plug into this jack disables audio
from the transceiver’s internal speaker.
13.8 V DC Cable
Connect the provided DC power supply cable (with fuse attached).
DATA Jack
Use this jack when updating the firmware. When a new firmware update for the FTM-
3100R/E is available, go to the YAESU website to download the programming data
and update the FTM-3100R/E to its newest state.
Cooling Fan
