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