Kenwood TM-631A Service Manual page 67
144/220mhz fm dual bander
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TM-631A
SPECIFICATIONS
Model
TM-631A
Specifications
144
to
148 MHz
Frequency range
220
to
225
MHz
Mode
F3E (FM)
Antenna impedance
50
ohms
Power requirements
13.8
VDOC
+15%
Ground
Negative
Transmit
mode
Less
than
11A
Receive
mode
with
no
signal
Less
than
0.6 A
Operating temperature
-
20°C
to
+60°C
(-4°F
to
+ 140°F)
Dimensions
(Wx
H
x
D}
(Projections included)
150x50x219
mm
(5.9"x2"x
8.67}
Weight
1.8 kg
(3.97
Ibs)
Output
Hi
14
MHz: 50
W, 220
MHz:
25 W, 430/440
MHz: 35
W
power*
Low
5W
Modulation
Reactance
modulation
Spurious radiation
Less than
-60
dB
Maximum frequency deviation
+5
kHz
Audio distortion (at 60'%
Less than
3% (300
to
3000
Hz}
modulation)
Microphone impedance
500
to
600
ohms
Circuitry
Double conversion superheterodyne
144 MHz: 16.9 MHz/455 kHz,
U.S.A.
version
220
MHz:
30.825
MHz/455 kHz,
Intermediate}
440
MHz:
21.6
MHz/455 kHz
frequency
144 MHz: 10.7 MHz/455 kHz,
Other market
430
MHz:
30.825MHz/455
kHz
Sensitivity(12
dB
SINAD)
14
MHz: Less
than
0.2
BnV,
220
MHz: Less than
0.18 zV,
430/440
MHz: Less than
0.1.
16
-6
dB: More than 12
kHz,
Selectivity
60
dB:
Less than
24
kHz
Better than
60
dB
Spurious response
Squeich sensitivity
Less
than
0.09
pV
Output
More than 2
W
across 8 ohms
load
(5%
distortion)
8 ohms
External speaker impedance
3e
Notes:
1.
Circuit
and
ratings
are
subject
to
change without notice
due
to ad-
vancement
in
technology.
2.
*Recommended duty
cycle:
1
minute
Transmission,
3
minutes Reception
KENWOOD CORPORATION
Shionogi Shibuya Building,
17-5,
2-chome Shibuya, Shibuya-ku, Tokyo
150,
Japan
KENWOOD U.S.A. CORPORATION
COMMUNICATIONS
&
TEST
EQUIPMENT GROUP
P.O.
BOX 22745,
2201
East Dominguez
St.,
Long Beach,
CA
90801-5745,
U.S.A.
KENWOOD
ELECTRONICS DEUTSCHLAND
GMBH
Rembricker
Str. 15,
6056 Heusenstamm, West Germany
KENWOOD
ELECTRONICS BENELUX
N.V.
Mechelsesteenweg
418
B-1930 Zaventem, Belgium
TRIO-KENWOOD FRANCE S.A.
13,
Boulevard
Ney, 75018 Paris,
France
KENWOOD LINEAR
S.P.A.
20125,
Milano-via Arbe,
50, Italy
KENWOOD
ELECTRONICS AUSTRALIA
PTY.
LTD.
(INCORPORATED
IN
N.S.W.)
4E.
Woodcock
Ptace, Lane
Cove,
N.S.W. 2066, Australia
KENWOOD
&
LEE ELECTRONICS,
LTD.
Wang Kee Building,
5th
Floor, 34-37, Connaught Road, Central, Hong Kong
KENWOOD
ELECTRONICS CANADA
INC.
P.O.
BOX
1075,
959
Gana Court, Mississauga, Ontario, Canada L4T 4C2
TM-631A
SPECIFICATIONS
Model
TM-631A
Specifications
144
to
148 MHz
Frequency range
220
to
225
MHz
Mode
F3E (FM)
Antenna impedance
50
ohms
Power requirements
13.8
VDOC
+15%
Ground
Negative
Transmit
mode
Less
than
11A
Receive
mode
with
no
signal
Less
than
0.6 A
Operating temperature
-
20°C
to
+60°C
(-4°F
to
+ 140°F)
Dimensions
(Wx
H
x
D}
(Projections included)
150x50x219
mm
(5.9"x2"x
8.67}
Weight
1.8 kg
(3.97
Ibs)
Output
Hi
14
MHz: 50
W, 220
MHz:
25 W, 430/440
MHz: 35
W
power*
Low
5W
Modulation
Reactance
modulation
Spurious radiation
Less than
-60
dB
Maximum frequency deviation
+5
kHz
Audio distortion (at 60'%
Less than
3% (300
to
3000
Hz}
modulation)
Microphone impedance
500
to
600
ohms
Circuitry
Double conversion superheterodyne
144 MHz: 16.9 MHz/455 kHz,
U.S.A.
version
220
MHz:
30.825
MHz/455 kHz,
Intermediate}
440
MHz:
21.6
MHz/455 kHz
frequency
144 MHz: 10.7 MHz/455 kHz,
Other market
430
MHz:
30.825MHz/455
kHz
Sensitivity(12
dB
SINAD)
14
MHz: Less
than
0.2
BnV,
220
MHz: Less than
0.18 zV,
430/440
MHz: Less than
0.1.
16
-6
dB: More than 12
kHz,
Selectivity
60
dB:
Less than
24
kHz
Better than
60
dB
Spurious response
Squeich sensitivity
Less
than
0.09
pV
Output
More than 2
W
across 8 ohms
load
(5%
distortion)
8 ohms
External speaker impedance
3e
Notes:
1.
Circuit
and
ratings
are
subject
to
change without notice
due
to ad-
vancement
in
technology.
2.
*Recommended duty
cycle:
1
minute
Transmission,
3
minutes Reception
KENWOOD CORPORATION
Shionogi Shibuya Building,
17-5,
2-chome Shibuya, Shibuya-ku, Tokyo
150,
Japan
KENWOOD U.S.A. CORPORATION
COMMUNICATIONS
&
TEST
EQUIPMENT GROUP
P.O.
BOX 22745,
2201
East Dominguez
St.,
Long Beach,
CA
90801-5745,
U.S.A.
KENWOOD
ELECTRONICS DEUTSCHLAND
GMBH
Rembricker
Str. 15,
6056 Heusenstamm, West Germany
KENWOOD
ELECTRONICS BENELUX
N.V.
Mechelsesteenweg
418
B-1930 Zaventem, Belgium
TRIO-KENWOOD FRANCE S.A.
13,
Boulevard
Ney, 75018 Paris,
France
KENWOOD LINEAR
S.P.A.
20125,
Milano-via Arbe,
50, Italy
KENWOOD
ELECTRONICS AUSTRALIA
PTY.
LTD.
(INCORPORATED
IN
N.S.W.)
4E.
Woodcock
Ptace, Lane
Cove,
N.S.W. 2066, Australia
KENWOOD
&
LEE ELECTRONICS,
LTD.
Wang Kee Building,
5th
Floor, 34-37, Connaught Road, Central, Hong Kong
KENWOOD
ELECTRONICS CANADA
INC.
P.O.
BOX
1075,
959
Gana Court, Mississauga, Ontario, Canada L4T 4C2
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