Yaesu FT-736R User manual

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OPERATING
MANUAL
FT-736R
YAESU MUSEN CO., LTD.
C P 0 BOX 1500
TOKYO JAPAN

FT-736R
MULTIMODE,
MULTIBAND
VHF & UHF BASE STATION
tr-73
60
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The FT-736R is a solid-state, frequency-synthesized VHF and UHF amateur transceiver
incorporating up to four band modules covering the 50, 144, 220, 430 and 1200
MHz
amateur bands. The standard model provides 25 watts RF power output on the 144 and 430
MHz
amateur bands in SSB, CW, and FM modes, with any two of the remaining three
bands installable as
options (10 watts output on
the 50 and
1200 1v1Hz
bands/.
An 8 -bit CMOS main microprocessor and 4 -bit i/o coprocessor provide exceptional digital
in
tegratiOn and control: including selectable tuning rates or mode-dependent channelized
tuning
in selectable
steps for each mode;
and the
widest
variety
of advanced
scanning
methods ever offered. Operating conveniences usually
found only on HF transceivers, such
as front panel adjustable
1F shift
and IF
notch, a noise blanker, all -mode
VOX and three-
speed selectable AGC
are inciuded. GaAs FET receiver RF amplifiers are provided in the
430 and 1200 MHz band modules, and a
high-stability TCXO reference oscillator is
incorporated for all bands to meet the
stringent demands of the higher bands.
The
innovacive
memory system
includeS one hundred
genera' purpose
memories plus ten
full duplex cross -band
memories, one global cal/ channel memory that can be
recalled from
any band or mode and up co four
band-specific cal/ channel memories, all of which store
mode and receive and transmit
frequencies independently. That gives you one
hundred and
fifteen
memories storing up to two
hundred and thirty frequencies. In
addition, fourteen
vfos
are provided: two
general
purpose plus one PMS
(Programmable
Memory limit
Scanning) on
each band, two special-purpose full
duplex vfos, and up to four clarifier
(receiver offset) memories, one
per band.
Each of the two
full duplex
vfos can be
selected so
that
its receive
and
transmit
frequencies
and modes can be
displayed and tuned
independently, or linked to tune
synch-
ronously in opposite
directions for
satellite
operation.
You can
retain
twelve
satellite

uplink/downlink
modes in the special vfos and ten
full duplex memories at all times. Of
course, metering of either
transmitter or receiver parameters is
selectable during full
duplex
communications. For CW operators,
the FT-736R offers quick-changeover
semi
break -in and includes
provisions for an optional
internal electronic keyer and
narrow (600
Hz) CW crystal filter.
Naturally, with FM
the predominant mode on
the VHF and UHF
bands, the FT-736R
includes all manner of convenient
features for both FM simplex and
repeater operation,
like a
discriminator center tuning
meter, special narrow FM
mode (to cut adjacent
channel
inter ference in
crowded areas)
and Automatic
Repeater Shift when
tuned to 2 -meter
repeater
subbands. 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
1750 or 1800 Hz
Burst Tone Generator
is installed as
standard.
An enhanced
CAT (Computer
Aided Transceiver)
System allows
addition and
customization
of features
and user-designed
controls from
an external
computer. The
FT-736R also
includes
a t/r-switched DC
supply line for
masthead preamplifiers,
activated from the
front
panel, and digital
input connection
directly to the
modulator for high
performance
packet radio
tnc interfacing
(preamps, personal computers
and packet
tncs not
supplied by
Yaesu).
An
efficient built -in switching-mode power
supply provides 13.8VDC to power the trans-
ceiver from the AC
mains, without the
hearing
and
weight of a heavy power
transformer.
Inside
the transceiver high-grade
modular design ensures
easy servicing.
Optional add-on
accessories include the TV -736
Amateur Television
Modulator/Demodulator
for ATV
operation, FIF-series CAT Interface
Units, SP -767 External
Loudspeaker, FMP-1
AQS Message
Processor, and FVS-1A Voice
Synthesizer and FTS-8 CTCSS Tone
Squelch
Unit (both
mount internally).
This manual is
organized in four parts:
(1) General Description and Specifications
(2) Controls and Connectors
(3) Installation
(4) Operation
We
recommend reading them in order; parts 1 and 2
will give you an idea of the functions
and capabilities of the
transceiver, and part 3 will guide you
through installing and
connecting the transceiver, and any
options you may have. After
reading these parts and
installing the
transceiver you will be ready for part
4, which should be read while sitting
at the
controls.
Note: For
purposes of clarity in this manual, some words
and abbreviations appear in
lower-case typeface when used for
general terms, and in upper -case when referring
to
specific control names. For example,
"vfo" (variable frequency oscillator) is used when
referring to the - frequency-tunable
function in general, while "VFO" refers specifically to
keys so
labelled and the four
switches under that
label on the panel.
2

SP
ECIFICATIONS
1.1
GENERAL
Operating
frequency ranges
(MHz):
50-53.99999*
144-145.99999 (or 147.99999)
220-224.99999*
430-439.99999 (or 449.99999)
Modulation methods:
SSB Balanced, filtered carrier
FM Variable
reactance (±5 kHz or
±2.5 kHz maximum
deviation)
ATV* low level carrier
Spurious radiation:
1240 or 1260-1299.99999* better than -60dB
Emission types:
LSB/USB (J3E voice),
CW (A1A)
FM (F2D FSK, F3E voice)
TV (A3F optional, for 1.2 GHz*)
Carrier suppression (SSB):
better
than -40dB
below peak output
Undesired sideband suppression (SSB):
better than -40dB
below peak output
Operating temperature range:
-10 to +60°C
Audio characteristic (SSB):
within
6dB from 300 to 2700 Hz
Reference oscillator stability:
better
than ±1 ppm
(+10 to +40°C),
and ±5
ppm (-10 to
+60°C),
after 15 minutes warmup
Microphone impedance:
600 ohms nominal (200 ohms to 10k)
Antenna impedance:
1.3
RECEIVER
50 ohms,
unbalanced
Circuit type:
Supply
voltage:
50*, 144 MHz bands:
double-conversion
85 - 132 or 170 - 264
VAC, 50/60 Hz,
Other
bands: triple-conversion super
-
or 13.8 VDC ±
10%, negative
ground
heterodyne
Power
consumption/current
req. (Approx.):
Intermediate
frequencies:
Maximum: 250 VA
13.69 MHz
and 455 kHz, plus
Receive: 1.5 A
47.75 MHz on 220*,
47.43 MHz on 430,
Transmit: 8
A
or 133.91 MHz on
1200 MHz band*
Dimensions
(WHD):
368 x 129
x 286 mm
Weight
9 kg
(19.8 lbs)
1.2
TRANSMITTER
Power
input
30
watts DC © 50 MHz*
60 watts
DC ® 144, 220*,
430 MHz
45 watts DC
® 1.2 GHz*
Sensitivity:
SSB/CW:
better than -15dBu for
12dB
S+N:N
FM:
better
than -9dBu for 12dB SINAD
Squelch sensitivity:
SSB/CW: better
than OdBu
FM: better
than -12dBu
Image
rejection:
60dB
or better
*
requires optional unit
3

Selectivity
(-6/-60dB):
SSB,
CW:
CW-N
(optional):
FM:
FM
-N:
2.2/4.5 kHz
600/1200
Hz
12/25 kHz
8/19
kHz
Audio
output power:
1.5W
into 8 ohms
with 5% THD
Audio output
impedance:
4 to 16
ohms
1.4 SUPPLIED
ACCESSORIES
AC Power Cable
Spare Fuse
4A (for 85-132V)
or 2A
(for 170-264V)
Preamp
Jumper Plugs (2
Long Feet (2
pcs)
Foot Pad (6 pcs)
FT-736R
Model Chart
T9013285
Q0000006
Q0000003
pcs) T9205546
R3054620
R7054630A
Version ---> A B1 B2 Cl C2 Hl H2
2m Band
Rptr Shift* (MHz 144-148 144-146 144-148 144-146 144-148 144-146 144-148
FM Ch. Step* (kHz) 5 12.5 12.5 12.5 12.5 5 5
Tone Burst (Hz) ±600 ±600 ±600 ±600 ±600 ±600 ±600
70cm
Band
Freq. Range (MHz) 430-450 430-440 430-440 430-440 430-440 430-440 430-440
FM Ch. Step* (kHz) 12.5 12.5 12.5 12.5 12.5 12.5 12.5
Rptr
Shift* (kHz)
±5 ±7.6 ±7.6 ±1.6 ±1.6
±5 ±5
Tone Burst (MHz) 1800 1750 1750 1750 1750 1750 1750
* can be reset by operator
1.5 OPTIONS
Model No.
E-736(DC)
FEX-736-50(A)
FEX-736-220(A)
FEX-736-1.2(A)
FEX-736-1.2(B)
FIF-232Cvan
FIF-232C
FIF-65A
FIF-MX
FMP-1
FTS-8
FVS-1A
Keyer Unit B
MD-1B8
MH-1B8
SP -767
TV
-736
XF-455MC
Description
DC Power Cable for operation
from Ext. Supply
50
MHz Band Module
220
MHz Band Module
1.2 GHz Band Module for
North America
1.2 GHz Band Module for outside North America
CAT/TNC Interface for Packet
Radio
&
CAT
CAT
Interface Unit for serial connection
CAT Interface Unit for Apple
II Computer
CAT
Interface Unit for MSX
Computers
AQS Message Processor &
digital message display
37-tone CTCSS
Subaudible Tone Squelch Unit
Voice
Synthesizer for Aural Frequency
Readout
Internal Electronic Iambic
Keyer
Desktop
Microphone
Handie Scanning
Microphone
External
Speaker with Audio Filters
Fast Scan Television (ATV)
Modulator/Demodulator
600 Hz
CW Narrow Filter
Order
No.
D4000028
D3000529
D3000530
D3000532
D3000533
A9700
D3000307
D3000369
D3000460
A8430
D3000333
D3000371
D3000535
D1000039
D1000041
A846001 -Z
D3000534
D2000034
4

Section 2.
CONTROLS, SWITCIIES &
CONNECTORS
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2.1 FRONT PANEL
CONTROLS
(I)
POWER
This button
turns the transceiver on and
off.
(2)
MOX
This
button manually
activates the
trans-
mitter when
depressed. ft
must be in the
undepressed position for reception,
and for
automatie
transmitter
activation via the
VOX
and
CW keying.
(3) MIC
Jack
This 8 -pin jack
accepts
the
microphone
plug.
Pinout is
indicated
by the
micro-
phone
schematic
below.
Acceptable
micro-
phone
input
impedance is 200
ohms to 10
kilohors,
with
600
ohms
optimum.
Pi
VP
CSY
0
(4)
PHONES
Jack
This 3 -contact
jack accepts either stereo
or monaural
headphones
with a 2-
or 3 -
contact
plug. When a
plug is
inserted the
internat
or
external
loudspeaker is dis-
abled.
Impedance is 4 to
100
ohm_ é
s.
:
Í
I •
\
Ca —
(5) MIC DRIVE
The inner MEC
control sets the transmitter
audio amplifier gain
during SSB and nl
transmission. ALC
(Automatic Level
Control) for SSB and
deviation level for
FM
transmission
are
set by
this control.
The
outer DRIVE control
sets the trans-
mitter power output for all
modes.
(6)
SQL
TONE
The inner
SQL
(squelch)
control sets the
signal threshold
level at which receiver
audio is muted.
The outer
TONE
control
adjusts
receiver
audio
characceristics.
5

(7)
AF
RF
The inner
AF gain control
adjusts the
audio
volume of the
receiver in
the
speaker or
headphones.
The
outer RF gain
control adjusts the
gain
of the
receiver RF
and Ist IF
amplifier on
the 50,
144
and 220
MHz
bands.
This con-
trol
is normally
set fully
clockwise
for
maximum
sensitivity.
(8) 2-Position
Pushbutton Switches
IERMSI
PAutit DIM
PROC: enables the
speech processor
in SSB
modes.
KEYER: turns the
optional internal CW
keyer
on and off.
BURST: turns the auto-burst
feature on
and off in FM modes.
When on, and
when operating with repeater shift mode,
the
green BURST indicator above the
tuning knob giows, and an audible
1750
Hz
or 1800 Hz
(U.S.A. version only)
tone
is sent automatically for t-second
whenever the
PTT switch is pressed to
transmit.
PAUSE: when depressed
(ON), the
scanner
pauses for five seconds on any active
channel, and then resumes
scanning.
When undepressed (OFF), the scanner
stays on an active
channel until after
the channel becomes clear, and then
resumes
scanning.
DIM: dims the brightness of the display
and meter lamp
for comfortable viewing
in the dark.
(9) VFO Selector Pushbuttons
ElEl
, EA 1
14-1f1
r ",
El
11,01111
One of these
buttons is always
depressed:
pressing any other will
disengage
whichever one was
pressed previously.
RB-TA & RA -TB: engage one vfo (A
or B)
for
receiving, and the
other for
transmitting (split frequency operationl.
Note
that this is
not the same as
operating with
preselected repeater
splits, described
later.
A & B: selects operation on one vfo (A or
B) only.
(10) Pushbuttons
with LED Indicators
D LOCK (and red LED): disables the
tuning knob and CHANNEL selector knob,
to
prevent inadvertent frequency changes.
FM CH (and orange LED): in FM modes,
disables the main tuning knob and
activates the detented
CHANNEL selector
knob for tuning in user-selected 5, 10,
12.5, 15, 20, 25, 30 or 50 kHz FM
channel steps. These are factory-preset
as shown in the chart on
page 4.
6

SSB CH (and
orange
LED): in SSB
and CW
modes,
disables the min
tuning knob
and
activates the
detented CHANNEL
selector knob for
tuning in 2.5 or 5
kHz
SSB channel steps.
NB (with green LED):
activates the noiSe
blanker in SSB and
CW modes.
NOTCH (with green
LED): activates the IF
notch filter In SSB and CW
modes.
(11) Main Tuning Knob
Unless deactivated
by the FM or SSB CH
buttons
just described, this knob adjusts
the displayed operating frequency in
10 Hz
or 100
Hz steps selectable in SSB and CW
modes, or in 100 Hz steps in FM mode (10
Hz if the CLARifier is on).
(12)
VDOWN & A UP Keys
When operating on a vfo, these keys
(above the Main
Tuning Knob) tune the
display frequency in the
same
steps as the
Main Tuning Knob, or in
programmable
steps It the FM CH or SSB CH button is
pressed (see above). When operating on a
memory, these keys select other prestored
memories within the same band. Pressing
and
holding one of these keys for more
than
i-second activates the scanner.
(13)
CHANNEL Knob
When operating
on a vfo with the FM CH
or SSB CH
button depressed, this
detented
knob tunes in
preprogrammed steps as des-
cribed for chose
buttons. When operating
on
a memory, this
knob selects the
prestored
memories on all
bands. This
differs from
the keys
just
described, in
that
memory selection
is independent of
the
operating band.
This knob is also
used
for CTCSS tone selection when the FTS-8
Tone Squelch Unit is installed.
(14) [A1 MHz/CH (BI Keys
! ---
1.71iT,
alta Cl
When operating on a vfo, these keys step
the operating frequency down or up 1
MHz, rotating around the ends of the
band.
When operating on a memory, these keys
step the memory channel number down or
up (regardless of whether the memory has
been stored, or not). Notice that this is
not the same as the CHANNEL knob or
the DOWN/UP keys above the tuning knob,
which select only occupied memories.
When the AQS feature is acti.ve and the
CODE (Digital Code Memory) key is
pressed, these keys allow selection of
Digital Code
Memories.
These
keys are also used for CTCSS zone
selection along with the CHANNEL knob
when the FTS-8 option is installed.
During
transmission, these two keys
generate the standard DTMF
A and B tone
pairs.
(15)
SHIFT -ii-NOTCH
In SSB and
CW modes, the inner SHIFT
control allows the center
of the receiver
IF passband to be
positioned above
below that of the received signal,
eliminate interference from signals
adjacent frequencies or to position the
passband on a range other than
chose
standard for SSB or CW. Normal setting
is
the 12 o'clock position.
or
to
on
IF
7

The outer
NOTCH
control
adjusts the
fre-
quency of
the IF
notch within
the
receiver
passband when
the
NOTCH
button is
depressed,
except in the
FM
mode.
(16)
na,
ENTIDI
& T
CALL
Pushbuttons
P ■ PAPT ■ T CALL
®E
During
reception,
FECI
activates the
alternate
functions (with
reverse-lettered
labels) of
the MODE
buttons and the
BAND(OFFSETI key. Each
of these
functions is
described
later, with "F+"
in
front
of the label
indicating
that this
button is
pressed first. During
transmis-
sion,
pressing
generates the "C"
DTMF tone pair.
During reception on a
vfo, ENTIDI allows
keypad
entry of a new
frequency within
the
operating band. Pressing it
once clears
all digits below
1 MHz to zero while the
I
MHz digit blinks (10
MHz digit on the 430
and 1200
MHz bands). After keying in a
new
frequency on the display, press
ENTIDI
again to shift operation to the
displayed frequency.
During
reception on a
memory, ENT(DJ
allows key pad entry of another memory
channel number, in the same manner as
just mentioned for frequency. During
transmission, pressing ENTIDI
generates
the "D" DTMF
tone pair.
In the FM modes, T CALL
transmits a
1750 Hz (or 1800 Hz
in the U.S.
model)
burst tone manually, for as long as the
button
is pressed.
(18)
FUNCTION
Key pad
TPTAX
•
CAIAt
0 1 11
CALL2
PAPP
■
ZWEI
All but
one of
these 15 keys (the
SPEAK
key)
have multiple
functions: the default
function labelled on
the upper half
of each
key, and
the alternate
function labelled In
reverse
letters/symbols on the lower
half
of
each key. The
default functions occur
when the
key is pressed
while receiving
normally, without any previous
keys
having
been pressed. These
functions are des-
cribed briefly
below, and their
applications
in
greater detail in the Operation
chapter.
For
alternate key functions, the
top ten
light grey keys ((IJ through (0)) are used
for keypad
entry of
frequencies, channel
numbers, and
other digit entries for
special functions, as described in the
Operation chapter. Also,
while
transmitting
in the FM modes, these ten keys and the
[*1 and
(#J keys serve as
a standard DTMF
generator: when one of these keys is
pressed the corresponding DTMF tone pair
is sent (like a pushbutton telephone).
Throughout this manual, alternate key
functions will be indicated in
square
brackets
II
following the default function
name: for example, the default function of
the
BANDIOFFSETI key selects operating
bands,
white the alternate function (to be
referred to as F+(OFFSETJ,
when this key
is pressed just after the F(CJ
key des-
cribed above) displays the offset between
the transmit and receive frequencies.
(17) MONITOR VFO
When
operating on a memory, this key
AdJusts the CW sidetone volume. shifts
operation to the
vfo
(according
to
8

the
selection of the
VFO
switches
above
the
AF/RF
controls).
This key
has no
function
when
already
operating
on a
vfo.
MR
(Memory
Recall)
This
is the
converse
of the
VFO key:
when operating
on a vfo, this
key
shifts
operation to
the last
selected
memory
channel.
However, when
already
operating
on a
memory, this key
toggles
the
"skip-scan" status of
the
memory:
causing a
small arrowhead
to appear just
to the right of the channel number on
the display.
More about this
later.
PMS (Programmable Memory
Scan)
When pressed just after
the F[C] button,
(F+PMS)
this
key
stores the
frequencies
of the
two vfos as
scanning limits
(VFO
A is
always the lower
frequency).
VFO I
M
When
the selected vfo and
memory are
on the same
band, this key exchanges
the
frequency and mode of each, and
leaves operation on the vfo.
REV
(Reverse)
This
key reverses
transmit and
receive
frequencies when operating split.
STEP
This key changes the vfo tuning and
scanning steps in a variety of ways,
depending on the operating mode and
other switch settings. Details are in the
Operation chapter.
MCK (Memory
Check)
This key allows display of the contents
of the memory channels without distur-
bing operation. When this
key is pressed
the MR
indicator at the left
of the
display blinks.
The contents of each
memory channel can be
checked by the
MHz/CH keys or
the CHANNEL selector
knob. Press this
key again to return the
display to
normal.
T SET (Tone Setting for
Tone
Squelch)
When
the optional
FTS-8
CTCSS Tone
Squelch Unit is installed, press this key
and then use
the CHANNEL knob (or
MHz/CH keys) to
select the
CTCSS tone
to be used
for tone squelch
operation.
The display shows
the CTCSS tone
fre-
quency
selection (in Hz)
until T SET is
pressed once more.
VFO►M
When
receiving'on a vfo, this
key copies
the
vfo frequency,
mode and tone
settings into the
last selected memory.
Data stored previously in
that memory is
overwritten, so be careful to check
the
memory
before pressing this key.
PRI
(Priority Channel Monitoring)
This
key activates periodic monitoring of
a memory channel while
operating on a
vfo. When active, "PRI" is
displayed
above the memory number to the right
of the displayed vfo frequency, and
every few seconds
reception shifts to
the memory
to check for activity.
Pressing VFO or MR keys cancels the
priority
function.
CLARECODE] (Clarifier [AQS Code Select])
The default function of this key toggles
the
clarifier
on
and off. When
on, the
transmit frequency remains fixed while
the main tuning knob controls only the
receiving frequency (within
±
10
kHz).
The alternate [CODE] function recalls
the
AQS digital code memory when the
AQS function is on, as described in
§4.20.
SPEAK
When
sizer
the optional FVS-1A Voice Synthe-
is
installed, pressing this key
causes the
operating frequency
and mode
to be read out by the
synthesizer.
CALL1
When receiving, this key
switches
operation to a prestored global call
9

channel,
which may
be in
another
mode
or on
another band.
CALL2
When
receiving,
this key
switches
operation to
a
prestored call
channel
on
the
same
band.
Notice that this
is
different from
CALL1, in
that each
band
may
have a
different call
channel
recalled
by
CALL2.
BAND(OFFSETJ
As
already
mentioned,
the
default BAND
function
changes
operating
bands
sequentially with
multiple
pushes. When
this
key is
pressed just
after the
FIC1
button, the
display
shows the
repeater
OFFSET,
which can
be
changed with the
numbered keys,
followed by
the ENT[DJ
button.
(19)
AQS Buttons
1111E8CT
CAC
AOS
These four
buttons control the
AQS
features,
described in §4.20.
AQS
This
button turns the
AQS feature on
and off. When on,
"AQS" is dispiayed in
an orange box at
the right side of the
display.
D SQL
This button turns
system on
and off.
"AQS" box and a
appear
at the right
1f pressed white the
AQS
is turned
en.
the digital squelch
When on, both the
white "D SQL" box
side of the display.
AQS feature is off,
CAC
This
Channel Access Cali button starts
search for a clear
channel.
RESET
This key
clears the AQS system, cancels
the D SQL
function, if active, or the
F[C] or ENTED)
states, if active.
(20)
MODE Selector
Pushbuttons
~112:E1=1~1
• L tm • CSM
The default
functions of these
six
momentary buttons
select the
operating
mode and receiver
IF bandwidth:
Button
LSB
USB
FM -N
FM
CW-N
CW
IF BW (6dB)
2.5 kHz
2.5 kHz
8
kHz
15 kHz
600 Hz
(w/optional filter)
2.5 kHz
When
pressed after the F[C)
key, the mode
buttons select repeater
shift [tRPTI,
or [-RFT], and
tone squetch mode:
fENCI
(encode),
[T
SQL)
(decode en)
and
[T OFF) (tone
squetch off) if the
FTS-8
Tone Squelch Unit is installed. Note
that
this is not
the same as
Digital Tone
Squelch, which is supplied as part of AQS.
(21)
Display
The diagram at the
bottom of the next
page shows the various segments of the
display.
(22) VOX PROC
KEPER BURST LEDs
These indicators
Blow green when their
a respective functions are
stante:
—
10 —

VOX = voice-actuated transmission
(or
semi break -in
CW)
PROC = speech processor on
KEYER = CW keyer on
BURST
= auto-burst activated
(23) ON AIR and
BUSY LEDs
The
red ON
AIR
indicator giows
while
transmitting. The green BUSY indicator
giows
when the
squelch is open while re-
ceiving, and is used for adjusting SSB
and
FM microphone gain (deviation) when
transmitting.
(24) METER Selector and Meter
mcrAn
stpo
Ate 04 (i irigin
1 3 3 !
P0
ut
The meter indicates either relative recei-
ved signal strength (S scale, top) or FM
discriminator center tuning (DISC scale,
bottom)
while receiving; and relative
transmitter power output (P0 scale),
or
transmitter
automatie level control (ALC
scale) while transmitting. The METER
selector determines the meter function
according to operating mode:
ALC, PO and S (the three leftmost post-
dons) select the meter functions during
satellite (full duplex) operation only.
tas
1331213 1:1 El OM
F M V FO A
US U
N VFO R
1 IS
LSO
C Kr N CALL
S/PO
and
DISC/ALC are for
simplex and
semi-duplex operation. The S/PO
selection shows received signal strength
and transmitter power output in all
modes. The DISC/ALC selection, while
receiving, also shows S -units in SSB and
CW modes, but in the FM
mode the
meter indicates discriminator center
tuning. While transmitting with the
DISC/ALC
selection, the meter shows
ALC (automatie level control voltage) in
SSB and CW modes, and
relative power
output in
PM.
(25) PREAMP
Button
This
button switches +I3V DC (max 300
mA) at the ANT jacks during reception, to
control a masthead preampli fier (not
supplied).
(26) Small Controls
VOX
x va
MAIN OCLAV
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r 1/ 2 54 - t hir ‘
4,1
J‘ 41
Oor
VOX GAIN,
DELAY & ANTI -TRIP
These controls set the
automatie voice-
actuated
transmit/receive switching in
SSB and FM modes; and semi break -in
keying in CW
mode. Adjustment
details
are in the Operation chapter.
I
PRI PMS
A SV s TEM
One
H
ENC
nap
Lj
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oma
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KEYER SPEED
Note: "SAT" is displayed in
orange when
Adjusts
the speed
of the
optional this selector
is set to any position
internal
electronic
CW
keyer, if
installed.
except OFF.
RX:
receiving (downlink) frequency is
displayed
and tunable,
transmit
(27) AGC
and SAT
Selectors
frequency
played.
is
fixed and not dis-
tI •
TX:
transmit (uplink)
frequency is
displayed
frequency
played.
and
tunable, receive
is
fixed and not dis-
AGC
Selects the desired
receiver AGC
decay
time in SSB
and CW modes: tast,
medium
or
slow.
SAT (Full
Duplex Satellite
Operatlon)
OFF: satellite operation
disabled
2.2 TOP PANEL
SWITCHES
a
e
(1)
Memory Backup
. ,
'7'
1 1 t
Accessible through this hole is
a miniature
slide switch which disconnects the lithium
backup battery. When the front panel
POWER switch Is off, sliding this switch
to the left for 30 seconds clears all
memories (including vfos), and resets the
microprocessor.
NOR: receiving (downlink) frequency is
displayed, vfos track
together in
same direction
when tuning.
REV: receiving
(downlink) frequency is
displayed,
vfos track in opposite
directions when tuning.
(2) 2 -Meter Automatic
Repeater Shift
Accessible through this hole
is a miniature
slide
switch which disables the Automatic
Repeater Shift
feature. When enabled,
this
feature causes
the transmit frequency to
be
automatically offset by a
preprogrammed
amount
(default 600
kHz)
from the
receive
frequency when tuned to
the
repeater input subband of
the 144 MHz
band. Move this switch to the
left to
disable this feature. When
disabled,
repeater shift can still be
selected
manually with
the +/-RPT
functions
(of
the MODE buttons).
— 12 —

2.3
REAR PANEL JACKS
& SWITCHES
12
1
e
f
aa
)1
•
•
feb
t er
15
IS
C
0
N
ke
0,
(1) DC Output Cable
Pigtail
(4)
STBY
DIN Jack
This cable
provides 13.8V DC at
up to 8A
from the
internet switching power
supply.
Normally, to operate the transceiver from
the AC malus, this cable must be
connec-
ted to the I3.8VDC jack.
GND
STBY
430MHz
STBY 50/220/1200MHz
(41‘.,
STBY
144MHz
(S) STBY
50/220MHz
This
5 -pin jack provides transmit/receive
(2) GND
Terminal Post switching Tines for controlling
external
transmitter amplifiers.
Pinout is determined
Connect this
terminal to a good earth by Band Module Installation (63.7).
ground using heavy braided cable.
(3)
CAT DIN Jack
(5) KEY Jack
Cal
trb at rj
(I) GND
, 0-)
BUSY
(4)
S.
OUT
NC
This á -inch, 3 -contact stereo jack accepts
C)
13.8V
a CW key or
keyer paddles (for
the
optional internal electronic keyer), or your
'This 6 -pin
jack provides
serial I/O
external electronic keyer. DO
NOT USE A
connections for
external computer
control.
2 -CONTACT PLUG in this jack. Pinout is
Data rate is 4800 bits/sec, TTL level.
shown above. Key up
voltage is 4.5V, and
key down current is 2 mA.
— 13 —

(6)
EXT
SPKR
(External
Speaker)
This
2
-contact
mini phone
jack
is for
con-
nection of
an
external 4-
to 8
-ohm
speaker,
such
as
the SP
-767.
(7)
PTT Jack
This
RCA
jack is
connected in
parallel
with
the MOX
switch,
and allows
activa-
tion of
the
transmitter by
external
devices,
such as a
packet TNC
or a
footswitch.
Open
-circuit
voltage is
8V DC,
and
closed-circuit
current is 8
mA.
(8)
DATA
IN/OUT
Jack
This 3
-contact
mini stereo
jack
allows
direct
connection to
the
FM
receiver
demodulator and
FM
transmitter
modulator,
for
digital
terminal
equipment
such as a
packet radio
TNC. 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
(tip
contact)
level is
200 mVrms
maximum
at 10
kilohms.
(9) 13.8VDC
Socket
DATA IN
DATA
OUT
GND
For AC
operation, connect the DC supply
cable pigtail (1) to this jack. To operate
the
transceiver from an external DC
source, connect your 13.8V DC supply
here. The supply must be capable of at
least 8 Amperes continuous load.
(10) FUSE Holder
For 100 - 117 VAC operation, install
a 4A
fuse here. For 200 - 234 VAC operation
install a 2A fuse.
(11) AC Jack
After
ensuring that
the installed
fuse has
the correct
rating for
the AC
voltage to
be
used,
connect the
mating end
of the
supplied AC
cable to this
3 -pin jack.
(12) 144
MHz Coaxial
Jack
This type
'M' (S0-239)
jack is
for connec-
tion of
your
antenna
for the 2
-meter
band
or
linear
amplifier
input.
Optimum
impedance
is 50
ohms,
unbalanced.
(13) 430
MHz
Coaxial Jack
This type 'N'
jack is
for connection
of
your
antenna for
the 70
-centimeter
band,
or linear
amplifier
input.
Optimum
impedance is 50
ohms,
unbalanced.
(14) 50 MHz
or 220 MHz
Coaxial Jack
(Optional)
This type
'M' (S0-239)
jack is
present
only if the
optional 50
MHz or
220 MHz
band
modules are
installed.
Connect your
antenna for the
6 -meter or
14 -meter
band
(respectively), or
linear
amplifier input.
Optimum
impedance is 50
ohms unbalanced.
(15) 50/220
MHz or 1.2 GHz
Coaxial Jack
(Optional)
If the 1.2
GHz band module is installed, it
must
be in this
location. Otherwise
the 50
or 220 MHz
band modules may be
installed
here. The
1.2 GHz
module has a type
'N'
jack, and the
50/220 MHz
modules
have a
type
'M' (S0-239)
jack.
Connect your
antenna or
linear
amplifier for
the
appropriate band.
Optimum
impedance is 50
ohms,
unbalanced.

Section 3. INSTALLA l'ION
3.1 Preliminary
Inspection
Inspect
the transceiver
thoroughly
immediately upon opening the packing
carton. Check to see
that all controls and
switches work
freely, and inspect the
outside
of the cabinet for any signs of
damage. If any damage
is found document
it completely, and
contact the
chipping
company (or dealer, if you purchased it
over the
counter) right away.
Save the
packing materials for possible use at a
later date.
1f you have purchased optional band
modules or other internal options that are
not
yet
installed, see 63.5 to
Install them
before proceeding.
3.2 Power Connection
Before connecting
power, if using AC,
check the AC voltage label on the rear
panel, to make sure that ic matches your
local line voltage. The switching supply in
the
FT-736R may be wired for operation
from 85 to 132 VAC
or 170 to 264 VAC. If
your mains voltage is not within the range
of the label, the
power supply range
jumper must be relocated as shown below,
and the fuse must be changed. Make
sure
to change the label
if you change the
power supply range.
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mr "do I•P ••••
ittfrib•iii••••••••••••
‘• • •
di • • • • • • • • • • • • •
',
d • • • • • • • • • • f • • • • I
• fl • • • • • • • ••• ••• •
1» g' • •
ás ^' • • • • ••* • • •
• 4 •
m
• • • • • • •
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• • lb* • • 'b • • • •
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S
4
NOTE: if you relocate the power
supply
jumper you must change the fuse in the
fuse holder. The lower voltage range re-
quires
a
4A fuse, and the higher voltage
range requires a 2A fuse.
CAUTION
PERMANENT DAMACE
WILL RESULT IF
IMPROPER SUPPLY VOLTAGE IS
APPLIED TO THE TRANSCEIVER. YOUR
WARRANTY DOES NOT COVER DAMAGE
CAUSED BY IMPROPER SUPPLY
VOLTAGE OR USE OF AN IMPROPER
FUSE.
After making certain the AC label matches
your line voltage, and
the correct fuse is
installed in the fuse holder, connect the
DC output cable pigtail
to the I3.8VDC
socket, and then connect the AC power
cord to the 3 -pin AC jack on the rear
panel
(see the photo below). Do
not
connect the other
end of the power
oord
to the walt outlet until all other trans-
ceiver
interconnections have
been made.
1f using an
external DC supply, it
must be
capable of 8 Amperes continuous load.
Connect it to
the 13.8VDC socket on
the
rear panel,
ensuring proper polarity.
S
• S•Ct...11-z i
AC power cord
4-
•
•
— 15 —

3.3
Transceiver
Location and
Grounding
A
primary
consideration in setting up
the
FT-7 36R is
providing
for adequate
ventilation
around the
top and rear
of the
cabinet.
Do not
place the
transceiver on
top of
another
heat-generating device
such
as a linear
amplifier, and do
not place
equipment,
books or papers on
top of the
transceiver.
Avoid heating
vents and
window
locations that
could expose the
transceiver to excessive
direct sunlight,
especially in
hot climates.
Connect the GND terminal
on the rear
panel to
a good earth
ground, using
a
heavy
braided cable of the shortest
length
possible.
All other station
equipment
should be
connected to the same
grounding
cable, as
close together as
practical. If
you use a
computer with or near the
FT-736R, you may need to
experiment with
ground
wiring to suppress computer noise
in the receiver.
3.4 Antenna Considerations
The type of antenna to use depends on the
purpose of your communications. For
example, antennas for FM operation are
generally vertically polarized, while
antennas for CW and SSB are horizontally
polarized for terrestrial communications,
and
circularly polarized for satellite
communications. You
may, of course, use
any of
these types
interchangeably, but
performance will be diminished
if you do
not follow these
customary practices. Any
antennas that
you use should
be designed
to
provide 50
ohms impedance on
the
operating
band. For specific
information,
consult your favorite
amateur radio
handbook, and talk to
your Yaesu dealer.
3.5
Installation of
Options
3.5.1
Band
Module
Installation
The
FT-736R
is supplied
with the 144
MHz
and
430 MHz band modules already
instal-
led in the two upper compartments. Up to
two additional band modules may also be
installed, in the lower compartments.
Note in the next diagram that the 1.2 GHz
module may be installed only in the lower
left corner (when viewed from
the rear).
The
50 and 220 MHz
modules may
be in -
stalled in either
lower compartment.
430 MHz
144
MHz
50/220MHz/1.2GHz 50/220 MHz
(1)
Remove all connections from the jacks
on the rear panel,
and then remove
the two
screws in the carrying
handle
and the eight screws
affixing the top
and bottom covers. Remove the
handle
and
covers, and place
the transceiver
upside-down on the
workbench.
(2) Locate
the gray
rubber thermal
pad
supplied with
the Band
Module, and
the four
machine
screws.
After
confirming
the correct
location for
the
Module,
insert the
machine screws
from
the rear
through the
four holes
in
the
heatsink and
then through
the
holes in
the thermal
sheet.
—
16 —

(3)
Carefully
slide the
Band Module into
place
so that the
mounting feet on
the
Module fit
into their slots
in the
chassis.
(4)
Tighten the
four
machine screws,
and
Install one
self-tapping screw
(for 50
or 220
MHz modules: two
for the 1.2
GHz
module)
through the hotels) near
the front
of the module
into the
chassis.
(5) Loosen
the two front
panel mounting
screws on each
side, and fold the
front panel upwards.
•
•
(6)
Connect the single red wire to either
of the terminals on the terminal block.
(7) Insta!! the 13 -pin plug into
J5010 er
J5011, and the 10 -pin plug into J1005
or J1006. Now
maks a
note
of winch
band modules are connected to J5010
and J501
t. You wilt need this
information
when connecting a
masthead preamp (63.6) or an external
power amplifier (§3.7).
C zikzaZ,b1,..„
- go
(8) 1f you are Installing other options,
proceed to
the appropriate sections
below.
Otherwise, fold the front
panel
back into place, tighten its
screws,
and replace the covers and carrying
handle.
3.5.2 Keyer
Unit Installation
(1)
Remove the eight
screws affixing the
top cover, and
remove the cover.
(2) Locate 8 -pin
connector P4001 on the
TX Board.
TX Board
P400
oir
I*
••
_
=k ir ,
tille
(3)
Cut
the tv. , isted jumper wire near
P4001.
1
1
(4) Insert the Keyer Unit into
P4001.
1, ihit
I ir -
liSikt '1
t
I. at %
aalt.*
irs
c rnr4y..t
11
(5) Replace the top cover and its eight
screws, unless instelling
other options.
-
17 —

3.5.3
CW Narrow
Filter Installation 3.5.4 Tone Squelch Unit Installation
(1)
Remove all
interconnections from the
rear panel, and then remove the
two
screws in the
carrying handle and
eight
screws affixing
the covers.
Remove the handle and covers,
and
place the
transceiver left side
up on
the workbench.
(2) Remove the six
screws affixing the RX
IF Unit at the left side of the chassis,
and carefully fold the
board away to
allow access
to the solder side.
i.
jumper plug
sr*
CW
filter
•
(3) Insert the four filter leads into their
holes, and
solder them into place
(polarity is not important).
(4)
Move the jumper
plug indicated
betow
from the
WI[de] to the
NA(rrow] pins.
SS8 ham
(5)
1.•M• 04
5911
11•••
cw„
.
Replace
the RX
1F
Unit and its six
screws Ifusing care not to pinch any
wires).
If instelling other
options,
proceed to the next paragraph.
Otherwise,
replace the covers and
carrying handle, and their screws.
(1) Perform step (1) of the CW Narrow
Filter Installation, at right. Set the
transceiver top side up.
(2)
Loosen
the two front panel
mounting
screws on each side, and fold the
front panel down.
11=
0
L-
• •
(3) Inside
the front panel, locate 8 -pin
jack J1019 and 6 -pin jack JI020.
Remove
the
jumper wire in
JI020, and
instel! the FTS-8 in these two jacks.
\*1
[1—.2
NOTE: if the FTS-8 is
removed a jumper
must be reinstalled between Ons 4 and 5
of
JI020.
The output level of the Tone Squelch Unit
bas been preset at the factory, but may be
realigned by adjusting the trimmer
potentiometer on the
FTS-8 (as described
in the FT-736R Technical Supplement).
(4) If you are Installing the FVS-IA
pro-
ceed to
step
(3)
of
the next section.
Otherwise, fold the front panel back
up, tighten its screws, and replace the
covers and carrying handle.
—
18 —

3.5.5
FVS-IA
Voice Synthesizer
(I) Perform
step (I) of the
Filter Instailation on page
the transceiver
top side up.
Installation
CW
Narrow
18, and set
(2) Perform step (2) of the Tone Squelch
Unit
Installation on page 18.
(3) Inside of the front panel behind the
keypad, locate the unconnected 10 -pin
jack, and connect the FVS-IA here.
itk
Display
Unit
--10-pin Connector
(4)
Set the JAIpanesel/ENklish]
switch on
the
FVS-1A to the desired
position, and
then affix the FVS-1A
board into place
using
the
double-sided adhesive tape
on
the flat surface of the FVS-1A IC.
qui
*
411 •
t e 4. * 0 •
4. j*O *
•
-7
• ie
•
de.
:! -- 0 0 0
(5)
Fold the front
panel back
into place,
tighten
its screws, and
replace the
covers and carrying handle.
3.6 Preamp Jumper
Installation
lf
you plan to use
a masthead
preamplifier
(not
supplied),
you wilt
meed to
install one
of
the supplied
jumper plugs
to provide
12V
DC
(at up to
300mA) across the
antenne jack of the
corresponding band
module. Note that
the proper place
to
install
the jumper for 50
MHz, 220 MHz or
1.2 GHz
depends on which
AF Unit jacks
(nos. J5010 or J5011) were
used in the
Band
Module Installation (63.5.1):
Install a
jumper plug
on
35016
to
activate
a preamp for the Band Module
connected to jack J5010.
Instelt a jumper plug on J5017 to
activate a
preamp for the Band Module
connected to jack J5011.
Since the 144 and 430
MHz modules are
already installed, just put a Jumper plug
on J5018 to activate a 144
MHz preamp, or
on JS019 to
activate a 430 MI -1z
preamp.
The diagram
on the
next page shows the
preamp supply
switching circuitry.
J5011
J5010J5010
i.
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aces
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00
oe
1 10
11 ,
Ik
—
19 —