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CT408
CT407
CT405
Mw
SW1 ose
:
Mid
tiamer
MW rf trimmer
CT404
SW1 rf
'lFT401
trimmer
iY
L404
SW1
rf coil
L401
\
SW1 ant coil =
trimmer
L409
L402
LW osc coil
LW ant coil
LW ant eee
D,
L406
trimmer &
LW rf coil
L403
:
hs oS
L405
MW ant coil
trimmer
MW ff coil
Fig. 3-13
Adjusting parts location
3-8.
SW2-SW19 1st IF ALIGNMENT, FREQUENCY COVERAGE
AND TRACKING ADJUSTMENT
Preparation:
yeu
cee
oy?
:
.
I
na
osc
na
asc
Rf Signal Modulation:
trimmer trimmer
coil
:
1-kHz 30% amplitude-modulation
1 tional
CT301
i.
cP305
loc
Rf Signal Generator Coupling:
To hermetic terminal HT304 with 0.01uF
ceramic capacitor
VTVM Connection:
Across
the coaxial cable (to cp circuit
board) through the 455-kHz amplifier
DC 4.5V Supply:
To feed-through capacitor CP305
generator
455 kHz
© amp
Fig. 3-14
Rf Signal
Generator
Adjust
Remarks
Frequency
Adjustment
Item
2nd osc coil
1.6 MHz
L317
Frequency
-
Adjust for maximum meter
Coverage
2.2 MHz
"a Bees aoe
reading.
IFT 301
6 MMe
IFT 302
Tracking
CT301
- ditto -
1.6 MHz
IFT 303
~ 2.2 MHz
IFT 304
I-f Alignment
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