Yaesu FT dx 1200 Operating Manual page 32

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REC Jack
This 3.5-mm, 3-contact jack provides low-level
receiver audio output for recording. It also outputs
voice audio during transmission if the
turned on.
Peak signal level is 300 mVp-p at 10 k-Ohms. The
front panel [AF] knobs do not affect the signals at
this jack.
REM ( REMOTE ) Jack
By plugging the optional FH-2 Remote Control
Keypad into this gold-plated jack, direct access to
the FT 1200 CPU is provided for control functions
DX
such as contest memory keying, plus frequency and
function control.
EXT SPKR Jack
This 3.5-mm, 2-contact, gold-plated jack provides
variable audio output for an external loudspeaker.
The audio output impedance at this jack is 4 - 8
Ohms, and the level varies according to the setting of
the front panel [ AF ] knob. Inserting a plug into this
jack disables the internal loudspeaker.
Page 30
KEY Jack
This 1/4-inch 3-contact jack accepts a CW key or key-
er paddle. A two-contact plug cannot be used in this
"MONI" is jack.
rent is 4 mA. This jack may be configured for keyer,
"Bug", "straight key", or computer keying interface
operation via Menu item "020 R KEYER TYPE".
µ-TUNE Jack
This covered 10-pin mini-DIN jack is used for con-
trol of the optional RF µTuning Kit.
CAT Jack
This 9-pin serial DB-9 jack allows external computer
control of the FT
here and to the RS-232C COM port on your personal
computer (no external interface is required).
Key-up voltage is +3.3 V DC, and key-down cur-
1200. Connect a serial cable
DX
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