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ALIGNMENT PROCEDURES
FM ALIGNMENT
Standard test frequency 400 Hz and deviation 22.5 kHz
oan
Connections
Frequency
fanine Dial
fad
:
:
F
;
justment
emarks
Alignment
OUTPUT
of Signal
Séiting
Generator
'
:
Connect input
Calibration
Place ouptut of
:
terminal of gene-
1
of
gene-scope on
10.7 MHz
| Lowest end}
11 and T2
scope to
IF
TP1
TP2
10.7 MHz
e
marker
fide oS fe oo
|
2
Calibration
Connect signal
Connect VTVM with
87.2 MHz
L3
Obtain sine-curve
of
generator to antenna
4 ohm dummy load
and maximum arnplitude.
Tuning Range } terminal (J1)
and oscilloscope to
;
=
3
tiieugh dummy
speaker terminal.
108.5 MHz | Highest end
CT2 (PVC)
4 | Adjustment | antenna.
80 MHz | 90 MHz
L2
ai (|
of
a
5
Tracking
106 MHz
106 MHz
CT1 (PVC)
6
Repeat the above adjustments.
fer te
*»
Use a screwdriver with plastic grip for all adjustment.
MW ALIGNMENT
Standard test frequency 400 Hz and modulation 30% at AM
Connections
Frequency
Step
Alignment
of Signal
que
hi
Adjustment
Remarks
OUTPUT
Generator
Setting
Calibration
Obtain symmetrical curve
1
of IF
:
;
and maximum am@ii tude.
for AM
Place output of
enkcen ae
[ea
Tagusient
| cal
tee to
gene-scape to
455 kHz | Lowest end
T3 and T4
hax
7
2
of
P
TP2
|
IF Gain
ee,
po
LS
Obtain sine-wave o: 400 Hz
Calibration
Connect standard
515 kHz
a
of
loop antenna to
Connect VTVM with
' and maximum
ampli tude.
4
Tuning Range | output of signal
4 ohm dummy load
1660 KHz | Highest end
CT5
generator.
and oscilloscope to
La
;
5
Adjustment
| Place bar antenna
speaker terminal.
600 kHz
600 kHz
ishy ante 661)
|
Max |
of
60 cm away from
:
6
Tracking
loop antenna.
1400 kHz | 1400 kHz
CT6
7
Repeat the above adjustments.
FM MPX
ALIGNMENT
Connections
Tuni
;
uning Dial
:
P
Le
Alignment
INPUT
OUTPUT
Setting
Adjustment
Remarks
Connect TP2
Connect Frequency
|
;
to the GND.
counter to TP3
—
SVR1
eee
kHz on the frequency
SW1 ALIGNMENT
——
Frequency
of Signal
Generator
Connections
;
Tuning Dial
Setting
OUTPUT
| Obtain sine-wave
9 400Hz
and maximum
amp tude
Calibration
of
Tuning Range
Lowest end
L6
CT3 (PVC)
LQ
Connect VTVM with
eee
4 ohm dummy load
es
terminal (J4) through
and oscilloscope to
djustment
dummy antenna
Ext. speaker
of
terminal.
Tracking
Connect signal
7.4 MHz
2.5 MHz
2.5 MHz
6.5 MHz
Repeat the above adjustments.
j
|
6.5 MHz
§
|
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