Yaesu FT-767GX User manual

FT-767GX
OPERATING
MANUAL
YAESU MUSEN CO., LTD.
roxvo sapam

Section
81.0 SPECIFICATIONS .............
1.1 General
1.2 Transmitter
1.3 Receiver
CONTENTS
82.0 CONTROLS, SWITCHES & CONNECTORS 4
2.1 Front Panel Controls
2.2 Rear Panel Jacks & Switches
83.0 INSTALLATION
3.1 Preliminary Inspection
3.2 Power Connection
3.3 Transceiver Location and Grounding
3.4 Antenna Considerations
3.5 Interconnection of Accessories
3.6 Memory Backup
3.7 Tuning Knob Steps
84.0 OPERATION
4.1 Preliminary Steps
4.2 Initial Power Up, Band Selection
4.3 Mode Selection
4.4 Tuning Methods
4.5 Keypad Frequency Entry
4.6 Controls for Enhancing Reception
4.6.1 Noise Blanker
4.6.2 RF Gain Control
4.6.3 NARrow IF Filter Selection
4.6.4 RF AMP Switch
4.6.5 ATTenuator Switch
4.6.6 APF (Audio Peak Filter)
4.6.7 IF Passband Shift
4.6.8 IF Notch Filter
4.6.9 AGC (Automatic Gain Control)
10
coocoocosorra cacos 16
Section
4.7 Transmitter Operation: General
4.7.1 SWR Measuring & Ant. Matching
4.7.2 SSB Transmission
4.7.3 CW Transmission
4.7.4 FM Transmission
4.7.5 AM Transmission
4.7.6 RTTY, HF Packet & SSTV
Transmission
4.8 Programmable Tuning Steps
4.9 Memory Operation
4.9.1 Memory Storage
4.9.2 Memory Recall
4.9.3 Changing Memory Frequency
4.10 Scanning
4.10.1 Memory Channel Scanning
4.10.2 Programmable Memory Scanning
4.11 Split Frequency Operation
4.11.1 Offset Frequency Memory
4.12 Tone Squelch Operation
4.13 Tips for SSB (LSB/USB) Operation
4.13.1 Weak Signal SSB Reception
4.13.2 Strong Signal SSB Reception
4.13.3 Suppressing Interference
4.13.4 Miscellanea
4.14 Tips for CW Operation
4.15 Tips for AM Broadcast Reception
4.16 Tips for FM Communications
4.17 VHF Packet (F2 Mode) Operation
4.18 CAT System Computer Control
Page
21
2
22
24
24
24
25
25
26
26
26
26
27
2”
27
27
28
29
29
essss
32
32
33
3

FT-767GX
ALL-MODE, ALL-BAND TRANSCEIVER
The FT-767GX is a solid-s
ting automatic antenna tuner, power supply and provisions for up to three optional
internal VHF and UHF band modules. The standard model provides 100 watts RF power
output on all hf amateur bands in SSB, CW, FM and FSK modes (and 25 watts AM carrier
power). Optional band modules provide 10 watts output on the 6m, 2m and 70cm bands.
tate, all mode synthesized amateur transceiver incorpora-
The die-cast top half of the chassis incorporates the Duct Flow Cooling system
originated for amateur radio by Yaesu, where air is circulated over the circuit
boards and throughout the chassis by a quiet internal cooling fan when operating
temperature rise
Four internal microprocessors with a custom gate array provide the highest level of
digital integration and control ever offered to radio amateurs: including features
previously unknown in a transceiver, such as freely user-programmable independent
tuning steps for each mode, an auto-calculating digital
g step:
SWR meter, digital RF watt-
meter, synchronous tracking VFOs and autospeed AGC (when tuning or scanning).
Popular operating conveniences such as dual (A-B) independent VFOs, ten memories
storing both frequency and mode, all mode squelch and range/step programmable scan-
ner, continuously variable noise blanker threshold, IF shift and IF notch are
included with recent improvements in response to operators! requests.
For CW operators, the FT-767GX operates QSK and includes (as standard) an iambic
keyer with linear speed control, selectable sidetone and carrier offset (600/700/800
Hz), 3-speed AGC (plus OFF), and tunable audio peak filter, all adjustable from the
front panel. A narrow (600 Hz) CW crystal filter is also included as standard.
For especially convenient VHF and UHF operation with the optional band modules, an
FM discriminator center tuning meter is provided, and to facilitate repeater opera-
tion, a split-frequency and clarifier offset display function plus the mode-
dependent programmable tuning steps and tracking VFOs are particularly useful. An
optional subaudible Tone Squelch Unit can be programmed from the front panel, and a
Burst Tone Generator is installed as standard in European versions.

An expanded CAT System with enhanced command set allows practically unlimited addi-
tion of features and user-designed controls from an external computer.
The FT-767GX
also includes connections for automatic control of the FL-7000 Solid-State HF QSK
Linear Amplifier, and digital i/o connection directly to the FM modulator for high
performance packet radio tnc interfacing (personal computers and packet tncs not
supplied by Yaesu).
Please read this manual carefully before operating the FT-767GX.
1.0 SPECIFICATIONS
1.1 GENERAL
Receiving frequency ranges:
100 ktz to 29.99999 MHz (continuous)
50 to 53.99999 MHz — (option)
144 to 145.99999 (or 147.99999*) MHz (option)
430 to 439.99999 (or 440 to 449.99999*) MHz (option)
Transmitting frequency ranges:
1.5 to 1.99999 MHz
3.5 to 3.99999 MHz
7.0 to 7.49999 MHz
10.0 to 10.49999 MHz
14.0 to 14.49999 MHz
18.0 to 18.49999 MHz
21.0 to 21,49999 Miiz
24.5 to 24.99999 MHz
28.0 to 29.99999 MHz
50 to 53.99999 MHz (option)
144 to 145.99999 (or 147.99999”) MHz (option)
430 to 439.99999 (or 440 to 449.99999*) MHz (option)
Emission types:
LSB/USB (J3E); CW (ALA); AFSK (JB, FIB);
AM (A3E); FM (F3E)
Reference oscillator stability:
better than <3 ppm (-10 to +50ºC)
after 15 minutes warmup
Antenna impedance:
Receive, and transceive above 50 MHz:
50 ohms, unbalanced
Transmit - 40, 30, 20, 17, 15, 12 &
10m amateur bands: 20 - 150 ohms
Transmit - 160 & 80m: 25 - 100 ohms
Supply voltage:
100, 110, 117, 200, 220 or 234 VAC,
50/60 Hz
Power consumption (approx.):
Receive: 55 VA
Transmit: 650 VA
Dimensions (WHD):
368 x 129 x 295 mm
Weight (with/without options):
15.5/13.5 kg (35/30 Ibs)
* per local requirements and Band Module

1.2 TRANSMITTER
Power output:
HF (al! modes except AM): 100W
HF (AM carrier): 25W
VHF/UHF (all modes except AM): 10W
VHF/UHF (AM carrier): 2.5W
Modulation types:
SSB Balanced, | filtered carrier
AM Low level (early stage)
FM Variable reactance (+5 kHz deviation)
FSK Audio frequency shift
Harmonic radiation:
HF: better than -50dB below peak output
VHF/UHF: better than -60dB
Carrier suppression (SSB):
better than -40dB below peak output
Undesired sideband suppression (SSB):
better than -50dB below peak output
Audio response (SSB, with TX Shift off):
not more than -6dB from 350 - 2900 Hz
3rd order IMD (vs single tone, W100W PEP,
14MHz):
better than -35dB below peak output
Microphone impedance:
500 - 600 ohms
1.3 RECEIVER
Circuit type:
triple-conversion superheterdyne
Intermediate frequencies:
45.03 MHz, 8.215 MHz and 455 kHz
Sensitivity:
see chart below
Image rejection:
1.5 to 30 MHz:
VHF/UHF:
70dB or better
60dB or better
IF rejection:
1.5 to 30 MHz:
VHF/UHF:
70dB or better
60dB or better
Selectivity (-6/-60dB):
SSB, CW, AMIN): 2.7/4.5 kHz
CWIN) (optional): 600/1300 Hz
AMIW): 6/16kHz
FM: 15/30 kHz
Notch filter rejection:
better than -30dB
Variable IF shift:
=1kHz
Audio output power:
1.5W into 4 ohms with 10% THD
Audio output impedance:
4 to 16 ohms
FT-767GX Sensitivity Chart
100 to | 200 to | 0.5 to Sto | Gina mt || Tienie
200 kHz | 500 kHz | 1.5 MHz| 20.9 MHz
[10dB S+N/N (uV)]
SSB/CW/FSK 25 1 4 0.25 0.25 | 025 | 0.25
AM 25 4 20 1 1 1 1
[12dB SINAD (uV)]
EM = a - 05 0.32 | 0.32 | 0.32
[Squelch sens]
SSB/CW/FSK/AM | 20 10 20 2 1 1 1
EM - - - 032 | 032 | 0.32 | 0.32
* with optional unit

2.0
CONTROLS,
SWITCHES
&
CONNECTORS
26 S U
23/22
1
FRONT
PANEL
CONTROLS
(1) POWER
This
button
turns
the
transceiver
on
and
off.
(2) MOX
This
button
manually
activates
the
transmitter
when
depressed.
This
button
must
be
in
the
undepressed
position
for
reception,
and
for
automatic
transmitter
activation
via
the
VOX
and
semi
break-in
or
QSK
systems.
(3) MIC Jack
This
8-pin
jack
accepts
the
MD-IB8
Desktop
Microphone,
MH-1B8
Handie
Scanning
Microphone,
or
the
YM-48A
Handie
DTMF
Scanning
Microphone.
Mic
pinouts
are
shown
on
page
9.
Acceptable
microphone
input
impedance
is
500
to
600
ohms.
(4)
PHONES
Jock
This
3-contact
jack
accepts
either
stereo
or
monaural
headphones
with
a
2-
or
3-contact
plug.
When
a
plug
is
inserted
the
internal
or
external
loudspeaker
is
disabled.
(5)
MIC
-S
DRIVE
The
inner
MIC
control
sets
the
transmitter
audio
amplifier
gain
during
SSB
and
AM
trans-
mission.
Output
power
for
SSB
transmission
and
modulation
level
for
AM
transmission
are
set
by
this
control
when
the
speech
processor
is
off.
The
DRIVE
control
sets
the
transmitter
carrier
level
for
CW, AM,
FSK
and
FM
transmission.
Also,
when
the
speech
processor
is
used
in
SSB
or
AM
modes,
this
control
sets
the
processor
drive
level.
2 19 18
(6) SQL o NB
The
inner
SQL
(squelch)
control
sets
the
sig-
nal
threshold
level
at
which
receiver
audio
is
muted,
in
all
modes.
When
the
optional
FTS-8
Tone
Squelch
Unit
is
installed,
turning
this
knob
fully
counterclockwise
into
the
T
SQL
position
activates
tone
squelch
(FM
only).
Set
this
control
counterclockwise
but
not
into
the
click-stop
for
unsquelghed
reception.
The outer NB (Noise Blanker) control adjusts
the width of the blanking pulse when the noise
blanker is activated during reception. If set
very far clockwise receiver audio may be dis-
torted.
(7) AF o RF
The inner AF gain control adjusts the audio
volume of the receiver output in the speaker
or headphones.
The outer RF gain control adjusts the gain of
the receiver RF and IF amplifiers. This con-
trol is normally set fully clockwise for
maximum sensitivity. When rotated counter-
clockwise from maximum, the
meter minimum
le. The
peak deflection for a particular signal will
remain the same if it is greater than the
level set by this control, but the receiver
will be insensitive to weaker signals. This
control also affects the SQL setting, and
should be preset fully clockwise when setting
the squelch threshold.
deflection point will move up the

(8) 2-Position Pushbutton Switches
VOX: enables automatic voice-actuated
transmit/receive switching in SSB, AM and
FM modes; semi break-in keying in CW mode;
and tone-actuated transmit/receive swit-
ching in FSK mode. This button must be
pressed together with the Full BK-IN but-
ton for QSK operation.
FULL BK-IN: activates full break-in CW
(QSK) on the hf bands. When activated,
the receiver will be audíble between dits
and dahs. The VOX button must be depres-
sed for this switch to function.
PROC: enables the rf speech processor in
SSB and AM modes. Processing level is set
by the control with the same name,
MONI: enables the CW sidetone monitor in
CW mode, and the transmit (IF) monitor in
other modes. Volume is set by the control
with the same name,
TX SHIFT: enables custom setting of the
transmitter IF bandpass in SSB modes,
using the control of the same name.
T ENC: activates either the Burst Tone
generator (when the FTE-2 Burst Unit is
installed), or the CTCSS (subaudible) tone
generator on FM transmissions when the
optional FTS-8 Tone Squelch Unit is
installed.
NAR: selects narrow IF filtering in CW
and AM modes. Narrow AM -6dB bandwidth is
2.7 kHz, and narrow CW is 600 Hz.
RF AMP: activates the receiver front-end
RF amplifier for extra sensitivity on HF
bands, when needed.
ATT: adds a 20dB attenuator between the
antenna and the receiver front end for
extra immunity to overload on the HF
bands, when needed. The 'ATT' indicator
LED below the display window is lit when
this button is depressed.
(9) Pushbuttons with LED Indicators
D LOCK (with red LED): disables the
tuning knob to prevent inadvertent fre-
quency changes.
MUTE (with yellow LED): disables receiver
audio, for keeping the receiver on in
standby.
NB (with green LED): activates the noise
blanker.
APF (with green LED): activates the audio
peak filter (for CW reception).
NOTCH (with green LED): activates the IF
notch filter.
(10) Tuning Knob
Controls displayed frequency in selectable 10
Hz or 100 Hz steps.
(11) VDOWN A UP PROGRAM Keys
Tune displayed frequency in programmable
steps, which may be different for each mode.
Pressing and holding one of these keys for
more than one half second activates multiple
stepping in the programmed steps. Steps are
originally preset at the factory to 5 kHz for
all modes.
(12) SHIFT -S TONE
The inner SHIFT control allows the center of
the receiver IF passband to be positioned
above or below that of the received signal, to
eliminate interference from signals on adja-
cent frequencies. Normal setting is the 12
o'clock position.
The outer TONE control adjusts receiver audio
characteristics in all modes.
(13) BAND / MCH Keys
Use thes keys to select operating frequency
band or memory channel (according to the oper-
ating status selected by the keypad). The key
on the left steps down, and the key on the
right steps up. Press and hold for a half
second for multiple stepping. In General Cov-
erage mode, steps are 500 kHz. In Ham mode,
steps are in 500 kHz ham band segments. If
the FTS-8 Tone Squelch Unit is installed,
these keys also select tone frequency.
(14) NOTCH -S-APF
The inner NOTCH control adjusts the frequency
of the IF notch within the receiver passband
when the NOTCH button is depressed, except in
the FM mode.
The outer APF (Audio Peak Filter) control ad-
justs the frequency of the filter passband
during CW operation when the APF button is
depressed.
Eu E =

(15) FAST, MIC U/D and KEYER pushbuttons
Press the FAST button to select coarse tuning
steps for the tuning knob, PROGRAM DOWN and
UP keys, microphone up/down keys; and PMS
(Programmable Memory Scan) function. When
this button is pressed the 10 Hz digit on the
frequency display is blanked.
The MIC U/D key selects the step size of the
microphone UP and DWN keys on the optional
scanning microphone. When this key is in the
NOR (undepressed) position, the microphone
buttons will duplicate the tuning steps of the
tuning knob. When in the PROG (depressed)
position, microphone tuning steps are the same
as the PROGRAM DOWN and UP keys.
The KEYER button turns the internal CW keyer
on and off.
(16) KEYER 9 PITCH
The inner KEYER control sets the speed of the
internal CW keyer.
The outer PITCH control is a 3-position
switch, selecting 600, 700 or 800 Hz CW car-
rier offset and sidetone pitch. Set to the
most comfortable sidetone frequency.
(17) FUNCTION Keypad
These 15 keys each have dual functions: the
default function labelled on the upper half of
each key, and the alternate function that be-
comes active after the orange key is pressed
(labelled in reverse letters/symbols on the
lower half of each key). Througiout this man-
val, the alternate key functions will be indi-
cated by parentheses () following the default
function name: e.g., the default function of
the H/G (ENT) key toggles Ham/Gen states,
while the alternate function ENTers programmed
data into a VFO or memory.
TRACK (PD)
The default function of this key toggles
simultaneous tracking of the two VFOs (A
and B), so that when the frequency of one
is changed, the frequency of the other
changes by the same amount. The green
TRACK indicator below the display lights
when this function is active. This is
convenient for tuning repeater sub-bands
where the repeaters all have the same off-
set. The alternate function of this key
(right arrow) causes the blinking display
digit selected for keypad frequency entry
to shift one place to the right. Keypad
frequency entry is described later in the
*Operation' section.
PMS (V/U)
The default PMS (Programmable Memory Scan)
function sets memory channels as the
limits for the scanner, when activated by
the SCAN button. A 'P! appears in the CH
position on the display when PMS is
active. The alternate V/U function
selects the VHF and UHF bands (if the op-
tional Band Modules are installed), and
multiple presses also cause the blinking
display digit selected for frequency entry
to shift one place to the left (the con-
verse of the preceding key, not labelled
on this key).
SCAN (7)
The default SCAN function starts the scan-
ner, scaming either the VFO; memory chan-
nels (if the memory recall (MR) mode is
active); or between the frequencies stored
in preset adjacent channels (if the PMS
function is active). The alternate func-
tion enters the digit 7 in place of the
blinking display digit selected for fre-
quency entry.
MpP-VFO (8)
The default function transfers the data
stored in the selected memory to the sel-
ected VFO, overwriting previous VFO data.
The alternate function enters the digit 8
in place of the blinking display digit
selected for frequency entry.
vFODM (9)
The default function transfers the data
stored in the selected VFO to the selected
memory channel, overwriting previous mem-
ory channel data. The alternate function
enters the digit 9 in place of the blin-
king display digit selected for frequency
entry.
VFO AB (CE)
The default function causes exit from mem-
ory mode to a VFO, or the alternate VFO (A
or B) to be selected. The currently sel-
ected VFO or memory is indicated on the
display. The alternate "Clear Entry!
function is enabled only after keying in
other digits on the keypad, before pres-
sing the (ENT) key: the entered digits
are cleared, and the blinking display
digit is reset to the far left so that you
can reenter data.

FUNC (T SET) (Orange Key)
This is the special key that activates
(with one push) the alternate functions of
all other keys. If this key is pressed
twice in succession, the subaudible tone
frequencies for the (optional) FTS-8 Tone
Squelch Unit can be selected by the
BAND/MCH keys.
MR (4)
The default function causes exit from the
VFO mode and recalis the last-used memory
channel (indicated to the right of the
operating frequency on the display). The
alternate function enters the digit 4 in
place of the blinking display digit selec-
ted for keypad frequency entry.
SPLIT (5)
When operating on a VFO, the default func-
tion causes the other VFO frequency to
become the transmitting frequency, while
the displayed VFO then serves as receive
frequency only. The alternate function
enters the digit 5 in place of the blin-
king display digit selected for frequency
entry.
VFO BaM (6)
The default function exchanges the memory
and mode of the selected VFO with the
memory and mode of the selected memory
channel. No data is overwritten. The
alternate function enters the digit 6 in
place of the blinking display digit selec-
ted for frequency entry.
H/G (ENT)
The default function toggles the selected
VFO between Ham bands and General Coverage
on HF. When General Coverage is selected
the green LED beneath the display window
is lit. The alternate (ENT) function
causes whatever digits have been selected
by the numeric keys and displayed (with
one digit blinking) to be entered into the
VFO, at which time operation shifts to the
new frequency and the functions of all
keypad keys return to their default
states. Once the orange FUNC key is pres-
sed, this key must be pressed to return
the display and keypad to normal (default)
operation.
AC (0)
The default function requires two presses
of this key in succession, and cancels
clarifier and/or split ofísets. The al-
ternate function enters the digit O in
place of the blinking display digit selec-
ted for frequency entry.
CLAR (1)
The default function toggles the clarifier
on and off, which causes the transmit fre-
quency to remain fixed while the tuning
knobs and buttons control only the recei-
ving frequency. Note that once a clarifier
offset is tuned, it is stored in a special
memory even when this key is used to turn
the clarifier off (only the 'AC! key
erases the clarifier memory). The alter-
nate function of this key enters the digit
1 in place of the blinking display digit
selected for frequency entry.
MCK (2)
The default (memory check) function allows
display of the contents of the memory
channels without disturbing operation.
When this key is pressed the MR indicator
at the left of the display and the CH
indicator at the right of the display both
blink. The contents of each memory chan-
nel can be checked by pressing the
BAND/MCH keys to step through the memo-
ries. Press this key again to return the
display to normal. The alternate function
enters the digit 2 in place of the blin-
king display digit selected for frequency
entry.
OFFSET (3)
When the clarifier or split operation is
active, the default function of this key
causes the difference between the transmit
and receive frequencies to be displayed
(with a preceeding !-' if the transmit
frequency is lower). Press this key again
to return the display to normal. The al-
ternate function enters the digit 3 in
place of the blinking display digit sel-
ected for frequency entry.

(18) ANTENNA TUNER
TUNER Pushbutton
This switch places the antenna tuner in
the line between the transmitter and the
HF antenna (the receiver comection to the
antenna is unaltered). When depressed,
the
tuner
status
is
indicated
in
the
win-
dow above the switch:
READY (green) indicates the tuner is
matched and ready for transmission.
WAIT (yellow) indicates the tuner is
readjusting itself. Wait until the
READY indicator lights before trans-
mitting.
WARN (red) indicates the tuner cannot
match the antenna to a low enough
SWR. Check the antenna and feedline
for a problem.
START Momentary Pushbutton
This pushbutton causes the antenna tuner
to readjust itself for minimum SWR. The
transmitter must be sending a steady car-
rier while the antenna tuner is readjus-
ting itself.
(19) DIGITAL SWR, RF PWR Pushbuttons
These momentary buttons toggle the digital SWR
and wattmeter functions of the display on and
off. Transceiver operation is not disturbed.
The selected function is indicated by 'SWR! or
*W'
(watts)
to
the
right
of
the
displayed
par-
ameter.
(20)
MODE
Selector
Pushbuttons
These
six
momentary
buttons
select
the
oper-
ating
mode
of
emission.
(21) Display
The diagram below shows the various segments
of the display.
(22) CAT ATT TRACK GENLEDs
These indicators glow when their respective
functions are active:
CAT = external control via the CAT System,
ATT = HF frontend receiver attenuator,
TRACK = VFO A/B tracking tuning,
GEN = General Coverage.
(23) ON AIR and BUSY LEDS
The
red
ON
AIR
indicator
glows
while
transmit-
ting.
The
green
BUSY
indicator
glows
when
the
main
squelch
is
open
while
receiving.
(24) -Multimeter
The meter indicates either relative received
signal strength (S scale) or FM discriminator
center tuning (DISC scale) while receiving;
and relative transmitter power output (PO
scale), final transistor current (IC scale),
transmitter automatic level control (ALC
scale), or speech processor compression level
(COMP scale) while transmitting. Also, the
VCC scale may be used to check power supply
voltage (at the final transistors), at any
time.
ends
Ecos
pd
|
Ee
RE
Power
IWatts]
displaved—
SWR dispiayed:
Digyt
for
Memory
Channel
|
ERES
ga
GE
==]
o
ea
ve
7
7
RR
[RA
Ea)
En)
Tigre for SWR
Dxgns for Frequencr
| À
Ciarifier active
= for Tome Frequency
ve
Last
dig
is
Memory
Ch
No.)
CTCSS
Tone
displaveé