Yaesu FT-767GX Operating Manual page 13

(7) MARK & LINEAR AMP Switches
The MARK switch activates a calibrating
carrier at multiples of 25 kHz throughout
the HF range of the receiver. This switch
should be OFF (undepressed) for normal
operation.
The LINEAR switch, when depressed (posi-
tion 1) enables QSK transmit/receive swit-
ching control by an external linear
amplifier which is designed for full
break-in operation, such as the Yaesu FL-
7000. When operating the FT-767GX without
a linear amp, or with a non-QSK linear
amp, this switch must be in the undepres-
sed position (position 2).
(8) KEY Jak
This 4-inch, 3-contact stereo jack accepts a
CW key or keyer paddles (for the built-in
electronic keyer), or your external electronic
keyer. DO NOT USE A 2-CONTACT PLUG in this
jack. Pinout is shown below. Key up voltage
is 45V, and key down current is 2 mA.
(9) BAND DATA & CAT DIN Jacks
The 8-pin BAND DATA jack provides control
and band selection data to the FL-7000
Linear Amplifier. Pinout is shown below.
Pins 4 - 7 are 500 kHz band selection data
in parallel BCD format, TTL levels. Pin 8
in connected in parallel with the LINEAR
switch. Pinout is shown below,
The 6-pin CAT jack includes serial 1/0,
AGC and PTT data for external computer
control. Data rate is 4800 bits/sec, TTL
level. Pinout is shown below.
1 ai
"Ro -
KEY PLUG PINOUT
(10) PTT Jack
(12) IF Unit Jacks
EXT SPKR is a 2-contact mini phone jack
for connection of an external 4- to 8-ohm
speaker, such as the SP-102.
DATA IN/OUT is a 3-contact mini stereo
jack which allows direct connection to the
FM receiver demodulator and FM transmitter
modulator, for digital terminal equipment
such as a packet radio TNC on VHF or UHF.
No pre- or de-emphasis is added to the
signals at this jack. Input impedance
(ring contact) is 600 ohms (for FM mode
only) and input signal level should be 30
mVrms.
Output (center contact, all modes)
level is 800 mVrms maximum at 10 kilohms.
1+3v
1 GND (common)
2 SO (serial output)
3 Si(serial input)
PTT (push-to-talk line)
5 AGC(O to-4V HiZ)
NC
4
TX GND
TUN CNTL
e
LINEAR
BAND DATA PLUG PINOUT
BAND DATA
E
DATA IN/OUT PLUG PINOUT
CAT PLUG PINOUT
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