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3-2.
AM IF ALIGNMENT
Test Equipment/Tools Required:
Rf signal generator (for a-m)
VTVM
Loop antenna
8Q resistor
Slot screwdriver
* * + & &
Rf Signal
Generator
Coupling
Rf Signal
Generator
Frequency
VTVM
Connection
455 kHz
1 kHz
(30% a-m)
Earphone jack with
8
load resistor in
parallel.
Loop antenna
(See Fig. 3-5.)
3-3.
FREQUENCY
COVERAGE
AND
TRACKING
ADJUSTMENT
Test Equipment/Tools Required:
Rf signal generator (for fm and a-m)
Loop antenna
VTVM
8Q. resistor
Slot screwdriver
* %*+
%*+
+ *
Preparation:
AM...1kHz
30%
ampli-
Modulation:
tude-modulated
signal
Rf Signal
Rf Signal
Generator
Generator
Coupling
Frequency
FM
Frequency
Coverage
Direct
connection
Receiver
Tuning Knob
86.5MHz
| Polly
|
counterclockwise
Fully
FM osc trimmer
Tracking
Tune ie:
FM
rf trimmer
106MHz
| 106 MHz signal
CTO1
ICF-111B
rf signal
loop antenna
generator
earphone
é
>
icF-111B | 13°
O
LO
ere
=
a
=
8Q. resistor
MW
Scale
10
(maximum
volume)
HIGH
fully clockwise
position
Band selector:
VOL control:
Cores of
IFT Al
CFT Al
TONE
control:
Tuning knob:
Adjust
for maximum
meter
reading.
Maximum
VOL Control Setting:
TONE
Control Setting:
HIGH
AFC
Switch:
OFF
rf signal generator
VIVM
BQ oes
|
a
ICF-1 1 1B
en
ees |
\
|
i phone
| | \
|
[
~~
\ |
|
jack
O
oe
,
.
telescopic antenna lead
Fig. 3-6.
_Fm/sw frequency coverage and tracking
adjustment setup
Core of fm
osc coil
LO4
Band
Selector:
FM
ICF-111B
Rf Signal
Rf Signal
Receiver
Adjustment
Generator
Generator
Tuning Knob
Coupling
Frequency
Setting
MW
Frequency
Coverage
Fully .
clockwise
1,680 kHz
Loop antenna
|
Fully
counterclock wise
Core of mw
osc coil
L10
MW osc trimmer
CT04-2
Band
Selector:
MW
Adjust for maximum
ue
" RO2
is selected
in value
in accordance
with
hfe rank
of fm
rf amplifier
transistor
QOl1.
hfe rank
(2, 3 or 4)
Q01
2SC710
hfe rank
(3 or 4)
8
7
6
|
Bie
gain rank
(7 or 2)
collector
|
mark
.
— a5 D Al
Oor?l
dot
Q10, 11
a
pee
2SB 495
7
2
3
1C1
CX-025
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