Yaesu FT-950 Operating Manual page 30

R P
EAR ANEL
ANT
1
-TUNE
TO FROM ROT
GND
EXT SPKR Jack
This 3.5-mm, 2-contact, gold-plated jack provides vari-
able audio output for an external loudspeaker. The au-
dio output impedance at this jack is 4 - 8 Ohms, and
the level varies according to the setting of the front
panel [ AF GAIN ] knob. Inserting a plug into this jack
disables the internal loudspeaker.
KEY Jack
This 1/4-inch 3-contact jack accepts a CW key or keyer
paddle. A two-contact plug cannot be used in this jack.
Key-up voltage is +3.3 V DC, and key-down current is
0.3 mA. Plug wiring is shown on page 15. This jack
may be configured for keyer, "Bug", "straight key", or
computer keying interface operation via Menu item
"039 A1A R-TYPE
039 A1A R-TYPE 039 A1A R-TYPE
039 A1A R-TYPE 039 A1A R-TYPE".
μ-TUNE Jack
This covered 10-pin mini-DIN jack is used for control
of the optional RF μTuning Kit.
Page 28
DC IN
2
INPUT : DC 13.8 V
22 A
LINEAR TUNER PTT
EXT
REC REM SPKR KEY
DMU Jack
This covered 8-pin mini-DIN jack accepts a cable to
connect an optional DMU-2000 Data Management
Unit.
CAT Jack
This 9-pin serial DB-9 jack allows external computer
control of the FT-950. Connect a serial cable here and
to the RS-232C COM port on your personal computer
(no external interface is required).
PGM-SW Switch
This slide switch is used for updating the transceiver's
firmware. The update software and instructions are
available for download from the Vertex Standard
website (http://www.yaesu.com/).
FT-950 O
-TUNE DMU CAT
M
PERATING ANUAL