Kenwood TR-50 User manual

KENWOOD
INSTRUCTION MANUAL
Thank
you
for
purchasing
the
new
TR-50
transceiver.
Please
read
this
instruction
manual
carefully
before
placing
your
transceiver
in
service.
This
unit
has
been
carefully
engineered
and
manufactured
to
rigid
quality
standards,
and
should
give
you
satisfactory
and
dependable
operation
for
many
years.
ON ATARWN >
CONTENTS:
PRECAUTIONS
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CONTRO
FUNCTIONS
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SPECIFICATIONS
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lm ACCESSORIES
«Carefully. unpack..your.. TR-50:.and..confirm..that.it.is.supplied..with. the. following.ac-:.........
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“Microphone with'16’key pad (USA):
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1/4 sleeve antenna (with BNC Connector) ............ cece ence eect errr teen ene nana tees lpe
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INi-Cad Battery.(PB=16) ocagts .d2dicags da sctaa se ueatadioneoeencekep te oer ete adh as 1 set
Batt@ly COSC... ccc tee ee EEE rere enee ees 1 set
‘Dummy battery .......0...cccece cee ee wees Ste satteae rah te teat tan May ciate enacts, 1pc
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Note: The polarities of the DC cord assembly are as shown below. Do not reverse
the polarities when connecting to the battery, as damage to the radio may
result!
is)
Black
Black/White Stripe

~~].
PRECAUTIONS
1.-Attach-the-supplied: whip antenna. Best results:will: be: obtained: when: the: radio is
held away from the body, since the upper UHF frequency range is easily attenuated
by. most solid objects.
2. When: the Ni-Cad battery.is.used, ensure that the battery case cover and the shor-
ting plug are securely fastened.
3. If the TR-50 is used with an external. antenna in mobile or fixed station operation,
use a high quality, 50 ohm coaxial cable. The larger the cable, the better, since
losses in the cable, ‘‘skin effect’’, are greater at the upper UHF frequency ranges.
To antenna
4. Do not adjust coils, trimmers, or pots. They have been pre-adjusted at the factory.
KENWOOD If your transceiver should fail to operate properly, contact the authorized Kenwood
dealer where you purchased the unit, for quick reliable service.
4
e
4

2. FEATURES
7% Linas PURE OSE: PORTABLE, SHOULDER TYPE TRANSCEVER
The TR-50 is a multi*purpose transceiver that can be used as a fied unit, a mobile
unit, or a portable unit.
¢ Repeater Applications 1) TONE (European versions)
When the TONE switch is pressed, and the ierophenel is keyed, a 1750 Hz, tone
burst signal is transmitted. (Non-locking type switch) ©
TONE (USA version)
When this switch is pressed, a Sub-audible tone is emitted along with the normal
transmitted: audio signal (optional). Installation instructions. for the tone unit are
shown (see page 20). (Locking type switch)
2) Reverse function
The REV switch is provided to monitor the input feauaney of the repeater.
@
MICROPROCESSOR
PROVIDES
MULTIPLE
FREQUENCY
CONTROL FUNCTIONS
e
Frequency
coverage
The
TR-50
covers
all
amateur
frequencies
in
the
range
of
1260
thru
1300
MHz.
e
Dual
digital
VFO’s
A
switch
is
provided
to
select
either
VFO
A
or
VFO
B.
When
VFO
Ais
selected,
the
tun-
ing progresses in 20 kHz steps. When VFO B is selected, tuning is in 10 kHz steps.
The reset frequency is 1260.00 MHz for VFO A, and 1295.00 MHz for VFO B.
¢
SHIFT/
MHz/
kHz
selector
SHIFT:
Used
to
select
repeater
operation.
Offset
is
+33
MHz
for
the
European
type,
and —20 MHz for the types other than European type.
kHz: When in this position, the main tuning dial will change the kHz position of the
displayed frequency.
MHz: | When in this position, the main tuning dial will chiang the MHz position of
the displayed frequency.
¢ Other functions 1) 5 memory channels
2) Priority alert function (AL)
3) Memory scan (MS)
4) Erase function, for clearing selected memory channels
5) Program scan with selectable scan width
6) Audio confirmation of various keyboard functions

3.
CONTROLS
AND
THEIR
FUNCITONS
Microphone hanger
@ FRONT PANEL
® Antenna mounting base
@) Main dial
SHIET_ kHz MHz
@) Shift Control
SHIFT_ kHz MHz
[+]
Shift control
Attach
the
supplied
whip
antenna
or
an
‘external
antenna
to
the
connector.
(BNC
type)
This.base
can
be
rotated.
When
using
a
whip
type
antenna,
select
the
angle
that
pro-
vides
the
best
receive
and
transmit
signals.
When
an
external
antenna
is
used,
adjust
the
base
to
the-most
convient
angle,
taking
care
not
to
apply
excessive
force
to
the
antenna
mounting
base.,
This
control
is
used
to
select
the
desired
transmit
and
receive
frequencies.
Turning
the
dial
clockwise
increases
the
frequency,
while
turning
‘the
dial
counterclockwise
decreases the frequency.
The
dia!
can
be
rotated
thru
360
degrees,
permitting
continuous
tuning.
Rotating
the
dial
during
memory
recall
Beet
neye
cause
the
radio
to
automatically.
revert
to
YES.
A/B mode.
Note:
In
general,
one
click
rotation
shifts
the
displayed
frequency
one
step
up
or
down.
Occasionally,
the
frequency
may
not
change
due
to
microprocessor
transients.
The
frequency
shift
control
is
used
to
designate
repeater
operation
(where
the
transmit
frequency
is
different
than.the
receive
frequency),
and
also
selects
the
tuning
rate
of
the
main
dial
(10
kHz
or
1
MHz).
:
Note:
If
the
repeater
offset
would
place
the
transmit
frequency
outside
the
tuning
range
of
the
transmitter,
simplex
operation
will
automatically
selected
by
the
microprocessor.
Controi Position Operation
—20 MHz TX offset (Versions other than below)
+33 MHz TX offset (European version)
10 kHz level is changed with the dial.
1 MHz level is changed with the dial.
The shift control also determines how much the dial frequency will change when one
of the microphone UP/DWN pushbuttons is depressed. In the SHIFT and kHz positions
the frequency is changed |O kHz each time a button is pressed in VFO B; and 20 kHz
in VFO A. In the MHz position the frequency is changed in 1 MHz steps regardless of
which VFO has been selected.

@ RIT Control
©)
POWER/VOL
control
— POWER/VOL —
G)
ore PS
© SQUELCH control
@upP
88 V @DWN
®NC @STBY;(PTT)
@GND
Omic
—
(mic) GND
Front panel side view
TONE switch
TONE
@) RIT switch
RIT.
Q Display
Transmit/Receive frequency
® Channel display
When the RIT switch is ON, the received frequency can be varied approximately
+5 kHz. (The shift is not indicated in the display) When the control is at approximately
12 o'clock ('’0’’), the received frequency ‘is the same as the transmit frequency.
When the control is turned clockwise, the receive frequency is higher than the
displayed frequency, and when the control ig turned counterclockwise the receive fre-
quency is lower than the displayed frequency. Normally, this control is set to the ‘’0”
position. pees
The power ON/OFF switch alsq functions as the volume control. Turning the control
fully counterclockwise will turn the volume down and the power off. Clockwise rota-
tion of the control will increase the’audio level. To conserve battery power, turn the
~ radio off during periods of inactivity:
The squelch control-is used to eliminate background noise during no signal periods.
Normally; this: control’ is adjusted clockwise until the background noise just dissap-
“pears. This point is‘known’as' the ‘‘Threshold Point’’. The radio must be adjusted to
this position for scanning functions to operate properly. For weak signal reception
rotate the control counterclockwise from the ‘‘Threshold point’’, so that background
noise appears. This will allow signals to be heard that are too weak to ‘’Open”’ the
squeich.
Microphone audio input. Frequency UP/DWN control and PTT lines are included. Pin
assignments of the MIC connector are shown at left.
When this switch is pressed, a tone signal is transmitted, that corresponds with the
local repeater requirements. For European models a 1750 Hz tone burst is transmit-
ted. For US models a sub-audible tone signal is transmitted. US models require use of
the optional TU-6 tone module.
When this switch is ON, the RIT annunciator lights in the display, and the received fre-
quency can be varied with the RIT control. (See 4 above). To turn OFF the RIT, press
the switch again.
-ji¢
a OFC Ms
wf, JCUO SG °
BUSY 1 3 5 S&RF 10
BATT
1260.00 MHz is displayed as ’’60.00’'.
Memory channel ‘'1-5’‘ or VFO A '’A “ and VFO B “’ & “’ are displayed.

(©.
°S/RF
and
BATT
meter
.
RIT/ON. indicator
ERASE indicator
‘ALERT indicator
MR indicator
MS indicator
ee 6@ 6 8 © @
‘M indicator
@) Keyboard
@
MR/M1
(Memory
Recall)
key
[RTM]
a |
@® MS/M2 (Memory Scan) key
==
© &/M3 (Erase) key
(EITM)
| |
1). During-receive, the input signal-strength is shown-on: the: bar-graph:.»
~2)--
During.
transmit,
the
relative
transmit
RF
level
output
is
shown.by
the bar
graph.
3) The battery or external power supply voltage is shown by the bar graph. When the
BATT switch on the rear is set to ON, the graph indicates the approximate battery
--voltage
remaining:
When
two:of
the
long
bars
dissappear,
itindicates
that
approx-
imately-10-volts remain, and-it is therefore time to recharge or replace the battery.
Note:
The
bar
graph
-willnot
‘indicate
voltages
below
10-volts
accurately.
Therefore,- whenever the: voitage drops to 10 volts, recharge or replace the
. battery. :
This lights: when:.the RIT:switch.is on.
This lights when the ease nin is active.
This lights ae alert operation.
This lights during memory recall mode.
This fights during memory. a
This lights during memory storage operations.
Note:
There
is
a
difference
in
the
appearance
of
the
S/RF
bar
graph
and
the
other
indicators.
This
is
normal:and:is
not
a
defect.
Used
to
initiate
memory
recall
operations.
This
key
is
also
used
to
select
M1.
When
this
key
is
pressed,
an
audio
‘’beep’’
is
generated,
and
the
‘’»MR’’
annunciator
lights.
The
display
will
sequentially
show
those
channels
that
currently
have
data
stored.
To
select
one
of
the
channels
simpley
press
the
corresponding
key
(1-5).
A
“beep’’
will
sound,
the
display
will
show
the
contents
of
the
memory
channel,
and
display
the
memory
channel
number.
If
a
channel
with
no
data
is
selected,
the
display
frequency
will
not
change
and
3
beeps
will
sound
to
signal
an
error.
Used
to
initiate
memory
scan.
This
key
is
also
used
to
select
memory
channel
2,
M2.
When
this
key
is
pressed
in
other
than
the
MR
mode,
a
‘‘beep’’
will
sound,
the
‘“’y
MS”
annunciator
will
light
and
memory
channels
with
data
stored
in
them
will
be
sequentially
scanned.
If
a
signal
is
present
on
one
of
these
channels,
the
radio
will
pause
for
approximately
5
seconds,
the
busy
indicator
will
light,
and
then
scan
will
resume.
To
stop
scan,
press
the
PTT
switch
or
the
neal
key.
Used
to
erase
data
from
memory.
This
key
is
also
used
to
recall
memory
channel
3,
M3.
When
this
key
is
pressed
in
other
than
the
MR
mode,
and
“‘beep
will
sound,
the
“44”
annunciator
will
light,
and
those
memory
channel
numbers
with data
stored
will
be
sequentially
displayed.
To
check
the
contents
of
one
of
these
channels
press
the
corresponding
key
(1-5,
0).
A
‘‘beep’’
will
sound,
and
the
memory
channel
number
and
contents
will
be
displayed.
If
you
wish
to
erase
this
data,
press
the
ikey,
again.
An
‘’R”
will
sound
in
Morse
Code
the
contents
of
the
memory
channel
will
be
cleared,
and
the
radio
will
return
to
VFO
operation.
If
you
decide
not
to
clear
a
memory
chan-
nel,
press
the
fl
key
to
cancel
the
procedure.

@
M/M4
(Memory
Input)
key
2 ERISA! Fa
-@ °C (Clear) key -
@ REV (Reverse) key
E=4
@_ AJB (VFO selector) key
ES |
® ALMS (Alert) key
This key is used to initiate memory storage. See section 5, on:page16' for further in-
formation. During merienen recall aperelions this key is used to recall memory channel
4, M4.
This key. is used*to cancel any. procedure before completion.
‘+)> (When this ey is pressed during: h MR BR Sperauene: operation will be returned to VFO
A or VFO:B.
2) When this:key is pressed:during MS operations, operation will be returned to MR.
3) When this key is pressed during E operations, operation will be returned to VFO A
or VFO B.
4) “When this key is‘pressed during M‘operations, operation will‘be réturnéd to VFO A
or VFO B.
This key is used to check the input of a repeater pair. This fineton all loves you to
determine if simplex communications are possible. ns
Used to ‘select VFO A or VFO B. Each time the key is depressed, the. VFO ‘is alternated
from A to B, BtoA...
The initial frequency setting and step width are as follows:
Frequency Display Step. Width
-VFOA - 1260 MHz "§0.00R"’ 20 kHz
>» VFO'B “.1295:MHz *95,005"' 10 kHz
The above values are selected when the reset button is depressed or the Lithium bat-
tery is replaced.
When this key is depressed in other than the MR mode, the alert indicator will light,
- and the receiver will switch'to the frequency stored in memory channel M1 once ap-
“proximately every. 6° seconds. If activity is present on M1, "2 Beeps’’ will sound to
“““alert you to that'activity. Memory channel 5, M5, is used to store both the transmit and
“seceive frequencies, so that repeaters with other than the normal offset may be used.
For specific details refer to section 5, page 18.

@
REAR
PANEL
(2 LAMP/BATT switch
LAMP
When
the
switch
is
in
the
BATT
position,
the
S/RE
meter
function
can
not
be
used.
(3
EXT.
SP
(External
Speaker)
jack
©)
()
OPEN/LOCK
screw
SEONG
(3
EXT
DC/CHG
terminal
(8 Shorting Plug
This
switch
is
used
to
check
battery
voltage
with
the
LCD
bar
graph,
and
also
to
turn
on
the
display
lamp.
When
the
switch
is
in
the
LAMP
position
the
display
is
illuminated.
When
the
switch
js
in
the
BATT
position
the
lamp
is
turned
on
and
the
BATT
voltage
can
be
checked
_.on
the
display.
To
conserve
the
battery,
do
not
use
the
lamp
uniéss
it
is
necessary.
,
External
speaker
terminal.
Connect
a
4-16
ohm
speaker
using
the
supplied
speaker
plug,
if
desired.
Used
to
secure
the
battery
compartment
cover.
Ensure
this
latch
is
securely
fastened
when
using
battery
power.
Dual purpose jack. Used to charge the Ni-Cad battery pack (PB-16), and to connect an
external DC supply (using the supplied DC cable assembly).
Use caution when connecting to an external supply. Do not reverse the polarity.
Must
be
installed
whenever
using
battery
power.
If
the
plug
is
not
installed
the
radio
will
not
function.

m MICROPHONE
@up
@DWN ©8V
@STBY (PTT) ®NC
mic @GND (mic)
@GND
Plug side view
q)
UP/DWN
(Up/down)
switch
1)
Depressing
thé
Up
or
the
Down
key
will
shift
the
frequency
one
step.
Step
size
is
determined
by
the
VFO
and’
Shift
switch
settings.
:
2)
Holding
the
Up
or
DWN
key
depressed
for
about
one
second.
will
initiate
the
band
scan
function.
3)
Depressing
the
Up
or
DWN
key
during
MR,
M,
or
E
operations
will
return
the
radio
-
to,
VFO
operation.
ie
PTT
switch
This
switch
is
used
to
initiate
transmit.
The
switch
also
functions
to
stop
scan.
If
scan
is
active
and
the
PTT
switch
is
depressed
one
time,
the
scan
will
stop,
without
actually
transmitting
on
the
air.
Subsequent
use
of
the
PTT
switch
will
initiate
transmit.
Belt
hook
(For
attaching
the
Se.
wn
shoulder
strap)
1)
Install
the
Buckle
as
shown
in
Figure
1.
2)
Slide
on
the
retainer
as
shown
in
Figure
2.
3)
Pass
the
strap
thru
the
Metal
Fixture
then
back
thru
the
retainer,
and
finally
thru
the
buckle,
as
shown
in
Figure
3.
4)
The
strap
length
may
be
easily
adjusted
by
loosening
the
buckle,
and
sliding
the
retainer
up,
as
shown
in
Figure
4.
Strap
3 Fig ) Retainer
10