Thank
you
for
purchasing
the
new
transceiver.
This
unit
has
been
carefully
engineered
and
manufac-
tured
to
rigid
quality
standards,
and
should
give
you
satisfactory
and
dependable
operation
for
many
years.
IMPORTANT:
1.
Please
read
this
Instruction
Manual
carefully
before
placing
your
transceiver
in
service.
2.
Save
this
Instruction
Manual.
This
Instruction
Manual
covers
the
following
models:
TM-221A
:
144
MHz
FM
transceiver
(45W)
(U.S.A.
and
general
markets)
TM-221ES
:
144
MHz
FM
transceiver
(45W)
(U.K.
and
European
markets)
TM-321A
:
220
MHz
FM
transceiver
(25W)
(U.S.A.
only)
TM-421A
:
430
MHz
FM
transceiver
(35W)
(General
markets)
TM-421A
:
440
MHz
FM
transceiver
(35W)
(U.S.A.
only)
TM-421ES
:
430
MHz
FM
transceiver
(35W)
(U.K.
and
European
markets)
TM-521A_
:
1200
MHz
FM
transceiver
(10W)
(U.S.A.
only)
TM-521E
:
1200
MHz
FM
transceiver
(10W)
(European
market)
When
there
are
differences
in
operation,
separate
instructions
will
be
given
for
each
model.
Illustrations
show
the
TM-221A.
The
following
explicit
definitions
apply
in
this
manual:
Warning:
Risk
of
fire
or
electric
shock
may
occur.
Do
not
disregard
!
Caution
:
Equipment
damage
may
occur,
but
not
personal
injury.
Note
:
If
disregarded,
inconvenience
only,
no
risk
of
equipment
damage
or
personal
injury.
TM-221ES/421ES
MODEL
IDENTIFICATION
NOTES.
Please
note
that
these
model
numbers
do
not
appear
on
the
front
panel
of
the
radio.
It
will
appear
on
the
Model
Number
Plate
on
the
bottom
of
the
radio
and
on
the
shipping
box.
The
front
panel
will
only
say
TM-221E
or
TM-421E.
CONTENTS
1.
BEFORE
OPERATION...
...--ine.csnsssnavevenrnaenses
2.
SPECIFICATIONS
AND
ACCESSORIES
....
2-1.
SPECIFICATIONS
2-2.
ACCESSORIES
3.
INSTALLATION
AND
CONNECTION..
3-1.
INSTALLATION..........000eeee
3-2,
CONNECTIONS....:0.-ssnrsceressnnies
4.
SOPERATION
scorn
isncceaucanmescspesneenesa
4-1.
CONTROL
FUNCTIONS
.
4-2.
RECEPTION
4-3.
TRANSMISSION
4-4.
MEMORY......
AcBu:
SCAN
jisesvsiancponusannosusekuranviierions
4-6).
REPEATER
cssonswosncnavnewwiaseneuvialeves
4-7.
TONE
FREQUENCY
SELECTION
.
4-8.
TONE
SQUELCH
(CTCSS).........
5.
MAINTENANCE
AND
ADJUSTMENT.
5-1.
GENERAL
INFORMATION
...
5-2,
5-3.
5-4,
eee
5-5.
MICROPROCESSOR
BACKUP
LITHIUM
BATTERY
REPLACEMENT
........:-scscrccrsnees
19
5-6.
FUSE
REPLACEMENT.......
5-7.
ORDERING
SPARE
PARTS.
5-8.
ADJUSTMENTG...........
af
6.
OPTIONAL
ACCESSORIES
.................000000eeee
20
6-1.
TSU-5
PROGRAMMABLE
TONE
DECODERIUNIT
sisasicencnerasennsies
connissmoaiineee
6-2.
MC-43S
HAND
MICROPHONE
6-3.
OTHER
ACCESSORIES.........
vi
7.
BLOCK
DIAGRAM
AND
CIRCUIT
DIAGRAM
7a.
BLOCK
DIAGRAM
sisassecacwassnapanneseases
7-2.
CIRCUIT
DIAGRAM
.
8.
REFERENCE.............
8-1.
DDNDOOAAW
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