Kenwood TM-321A Service Manual page 30

TM-321A
ADJUSTMENT
REQUIRED
TEST
EQUIPMENT
1.
2.
12.
13.
14,
DC
V.M
1)
High input impedance
RF VTVM (RF
V.M)
1) Input impedance
:
1MS
min.,
2pF max.
2) Voltage
range
:
F.S
=
10mV
~
300V
3) Frequency
range
:
Up to
450MHz
3.
Frequency Counter (f. counter)
1)
Input sensitivity
Approx. 50mV
2) Frequency
range
:
Up to
450MHz
4. DC Power
Supply
1)
Voltage
:
10V
~
17V,
variable
2) Current
:
6A
min.
Power Meter
1)
Measurement
range
Approx.
:
50W, 3W,
1W
2) Input impedance
:
502
3) Frequency
range
:
450MHz
AF VTVM (AF
V.M)
1)
Input impedance
:
1MS
min.
2) Voltage range:
F.S
=
1mV
~
30V
3) Frequency
range
:
50Hz
~
10kHz
7.
AF
Generator
(AG)
1)
Output frquency
:
100Hz
~
10kHz
2) Output voltage
:
0.5mV
~
1V
Linear Detector
1)
Frequency
range
:
450MHz
Field Strength
Meter
1)
Frequency
range
:
450MHz
10.
Directional Coupler
11.
Oscilloscope
1) High
sensitivity oscilloscope with horizontal input
terminal
SSG
1) Frequency
range
:
144MHz
and
430MHz.
2) Modulation
AM
and
FM MOD.
3) Output
level
-20dB
to 100dB
Dummy Load
1)
8,
50W (approx.)
Noise Generator
1)
Must generate
ignition-like
noise
containing
har-
monics beyond 450MHz.
15. Sweep Generator
1) Sweep
range
:
1440MHz
and 4380MHz bands
16, Tracking generator
PREPARATION
1)
2)
3)
4)
5)
6)
Uniess otherwise specified, knobs and switches should
be set
as
follows Table 5
POWER
SW
ON
SHIFT
SW OFF
AF VOL VR
MIN
REV
SW
OFF
SQL VOL VR
MIN
SCAN SW. OFF
LOW SW
OFF
CTCSS
SW
OFF
VFO/M SW
VFO
TONE
SW
OFF
5.
Table
5
Mic
(1)
@
Gnp
(Ic)
ss @)
©
DOWN
@)
©)
8m
GND
up
6.
9.
Fig.
18
MIC terminals (view from front
panel side)
Use an insulated
adjusting
rod
to adjust trimmers
and
coils.
To
prevent damaging
SSG, never connect the micro-
phone to mic jack
while adjusting the
receiver section.
Be sure to turn the power switch OFF, before connect-
ing
the power cable to
a
power source.
SSG output
levels are those at the time the
output
terminal
is
open.
Meter and display section should
be set as
follows
Fig.
19.
MHz 220MHz FM TRANSCEIVERTM-321A
vol
ENWOOD
Low
POWER
-
REV
+
At
SCAN CTCSS TONE
E
reeds
28
BUSY
OODEOORO0o OUOU on air:
sa
L
S&RF OVER
SHIFT
REV
SCAN
cTcss
TONE
3
Fig.
19
33
TM-321A
ADJUSTMENT
REQUIRED
TEST
EQUIPMENT
1.
2.
12.
13.
14,
DC
V.M
1)
High input impedance
RF VTVM (RF
V.M)
1) Input impedance
:
1MS
min.,
2pF max.
2) Voltage
range
:
F.S
=
10mV
~
300V
3) Frequency
range
:
Up to
450MHz
3.
Frequency Counter (f. counter)
1)
Input sensitivity
Approx. 50mV
2) Frequency
range
:
Up to
450MHz
4. DC Power
Supply
1)
Voltage
:
10V
~
17V,
variable
2) Current
:
6A
min.
Power Meter
1)
Measurement
range
Approx.
:
50W, 3W,
1W
2) Input impedance
:
502
3) Frequency
range
:
450MHz
AF VTVM (AF
V.M)
1)
Input impedance
:
1MS
min.
2) Voltage range:
F.S
=
1mV
~
30V
3) Frequency
range
:
50Hz
~
10kHz
7.
AF
Generator
(AG)
1)
Output frquency
:
100Hz
~
10kHz
2) Output voltage
:
0.5mV
~
1V
Linear Detector
1)
Frequency
range
:
450MHz
Field Strength
Meter
1)
Frequency
range
:
450MHz
10.
Directional Coupler
11.
Oscilloscope
1) High
sensitivity oscilloscope with horizontal input
terminal
SSG
1) Frequency
range
:
144MHz
and
430MHz.
2) Modulation
AM
and
FM MOD.
3) Output
level
-20dB
to 100dB
Dummy Load
1)
8,
50W (approx.)
Noise Generator
1)
Must generate
ignition-like
noise
containing
har-
monics beyond 450MHz.
15. Sweep Generator
1) Sweep
range
:
1440MHz
and 4380MHz bands
16, Tracking generator
PREPARATION
1)
2)
3)
4)
5)
6)
Uniess otherwise specified, knobs and switches should
be set
as
follows Table 5
POWER
SW
ON
SHIFT
SW OFF
AF VOL VR
MIN
REV
SW
OFF
SQL VOL VR
MIN
SCAN SW. OFF
LOW SW
OFF
CTCSS
SW
OFF
VFO/M SW
VFO
TONE
SW
OFF
5.
Table
5
Mic
(1)
@
Gnp
(Ic)
ss @)
©
DOWN
@)
©)
8m
GND
up
6.
9.
Fig.
18
MIC terminals (view from front
panel side)
Use an insulated
adjusting
rod
to adjust trimmers
and
coils.
To
prevent damaging
SSG, never connect the micro-
phone to mic jack
while adjusting the
receiver section.
Be sure to turn the power switch OFF, before connect-
ing
the power cable to
a
power source.
SSG output
levels are those at the time the
output
terminal
is
open.
Meter and display section should
be set as
follows
Fig.
19.
MHz 220MHz FM TRANSCEIVERTM-321A
vol
ENWOOD
Low
POWER
-
REV
+
At
SCAN CTCSS TONE
E
reeds
28
BUSY
OODEOORO0o OUOU on air:
sa
L
S&RF OVER
SHIFT
REV
SCAN
cTcss
TONE
3
Fig.
19
33