Yaesu FT-1000 Operating Manual page 21

3. Controls & Connectors - Rear Panel
(7) IF OUT Phono Jack
This output jack provides a low level sample of the
73.62-MHz first IF signal of the main receiver, for use
by a monitorscope. Peak output level is approximately
8 mVims @ 50-Q impedance.
(8) BAND DATA DIN Jack
This 8-pin output jack provides control signals for
the FL-7000 Solid-State Linear Amplifier or FC-1000
Remote Controlled Tower Mounting Antenna Tuner,
including band selection data to automatically set the
Linear or Tuner to the same band as the main display of
the transceiver. Pinout is shown on page 7.
(9) PACKET DIN Jack
This 5-pin input/output jack provides receiver audio
and squelch signals, and accepts transmit (AFSK)
audio and PTT control, from an external packet tnc.
Pinout is shown on page 7. The receiver audio level at
this jack is at a constant 100-mV level (@600Q), preset
by VR3005 on the AF Unit (see Beeper Volume Setting
on page 9 for how to gain access to this trimmer, if
necessary).
(10) AF OUT Mini Phone Jack
This 3-contact jack provides dual-channel low level
receiver output, for recording or external amplification.
Peak signal level is 200 m Vrms at 600 Q. Main receiver
audio is on the left channel, and sub receiver audio is
on the right channel. A stereo amplifier or recorder is
recommended, to record each receiver separately when
dual reception is enabled. The front panel AF and RX MIX
controls and the PHONE switch setting in the top access
panel do not affect the signals at this jack. Pinout is
shown on page 7.
(11) PATCH IN Phono Jack
This input jack accepts transmitter audio — either
AFSK or voice, for transmission. This line is mixed
with the microphone audio input line, so the micro-
phone should be disconnected if using this jack and
mixing is not desired. Impedance is 500 — 600 Q.
(12) EXT ALC Phono Jack
This output jack provides ALC (Automatic Level
Control) voltage to control a linear amplifier. The volt-
age range is 0 to +4 VDC.
(13) PTT Phono Jack
This input jack may be used to control 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 PACKET and RTTY jacks for tnc/tu control. Open-cir-
cuit voltage is +13.5 VDC, and closed-circuit current is
1.5 mA.
(14) CAT DIN Jack
This 6-pin input/output jack allows external com-
puter control of the FT-1000. Signal levels are TTL (0
and 5V DC). Pinout is shown on page 7, and the
signalling protocol and data formats are described in
the CAT chapter, starting on page 36.
(15) rTTY DIN Jack
This 4-pin input/output jack provides connections
for an RTTY terminal unit. Pinout is shown on page 7.
The receiver audio level at this jack is at a constant
100-mV (@600 &) level, preset by VR3006 on the AF
Unit (see Beeper Volume Setting on page 9 for how to
gain access to this trimmer).
(16) DYS-2 DIN Jack
This 7-pin input/output jack is for connection of the
DVS-2 Digital Voice Recording option, described on
page 33.
(17) EXT SPKR Mini Phone Jack
This 2-contact output jack provides mixed receiver
audio for an external loudspeaker, such as the SP-5.
Inserting a plug into this jack disables the internal
loudspeaker. Impedance is 4 to 16 Q.
(18) key 3-Contact Phone Jack
This '/4-inch phone jack accepts a CW key or pad-
dle manipulator. It is connected in parallel with the jack
with the same name on the front panel (either or both
may be used). A 2-contact plug cannot be used in this
jack. Keyup voltage is +5 V, and keydown current is 0,5
mA. Pinout is shown on page 7.
(19) Ac Line Cord Socket
Connect the supplied AC line cord to this socket
after ensuring that your AC mains voltage matches that
on the label. See the Installation section for instructions
on how to change the power transformer voltage, if
necessary.
(20) FuSE Holder
This holder requires a 15-A fuse for operation from
AC voltages below 125 V, and an 8-A fuse for AC
voltages of 200 V and above. Only normal fast-blow
type fuses should be used here.