Page 27FT-950 OPERATING MANUAL
TO
1
ANT
DC IN
2
FROM
GND
ROT LINEAR TUNER PTT REC REM KEY
DMU CAT
EXT
SPKR
-TUNE
-TUNE
INPUT
22 A
: DC 13.8 V
REAR PANEL
ANT 1/2 Jacks
Connect your main antenna(s) here, using a type-M
(PL-259) connector and coaxial feed lines. The inter-
nal antenna tuner affects only the antenna(s) connected
here, and only during transmission.
DC IN Jack
This is the DC power supply connection for the trans-
ceiver. Use the supplied DC cable to connect directly
to a DC power supply, which must be capable of sup-
plying at least 22 A @13.8 VDC.
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 for making ground
connections, and please refer to page 9 for other notes
about proper grounding.
μ-TUNE Jacks
These jacks are used to connect the optional RF μTun-
ing Kit, signal in and signal out.
ROT
(
ROTATOR
)
Jack
This covered 6-pin MINI-DIN Jack accepts a cable to
connect to a YAESU Antenna Rotator Control, G-
800DXA, 1000DXA, or 2800DXA (listed models are
current as of middle 2007). You may control the an-
tenna azimuth, rotation, and rotation speed, using the
[
BAND
]
buttons on the front panel.
LINEAR Jack
This 10-pin output jack provides band selection data,
which may be used for control of optional accessories
such as the VL-1000 Solid-state Linear Amplifier.
Pinout is shown on page 15.
TUNER Jack
This 8-pin output jack is used for connection to the
FC-40 External Automatic Antenna Tuner. Pinout is
shown on page 15.
RTTY/PKT Jack
This 6-pin input/output jack accepts AFSK input from
a Terminal Node Controller (TNC); it also provides
fixed level (100-mV @600 Ohms) receiver audio out-
put, and FSK keying line. Pinout is shown on page 15.
PTT Jack
This RCA input jack may be used to provide manual
transmitter activation using a footswitch or other
switching device. Its function is identical to the
[
MOX
]
button on the front panel. The same line is available at
the RTTY/PKT jack for TNC control. Open-circuit
voltage is +5 VDC, and closed-circuit current is 1 mA.
REC Jack
This RCA jack provides low-level receiver audio out-
put and transmit (monitor) audio output (requires the
[
MONI
]
button is turned on), for recording or external
amplification. Peak signal level is 30 mVp-p at 10
kOhms.
REM
(
REMOTE
)
Jack
By plugging in the optional FH-2 Remote Control Key-
pad to this gold-plated jack, direct access to the FT-
950 CPU is provided for control functions such as con-
test memory keying, plus frequency and function con-
trol.
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