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3-9.
SW2~SW19
FREQUENCY
COVERAGE
AND TRACKING
ADJUSTMENT
rf signal
Preparation:
generator
Rf Signal Modulation:
1-kHz 30% amplitude-modulated signal
Rf Signal Generator Coupling:
Direct
connection
across
the
antenna
terminal SW2 ~ 19
VTVM Connection:
To EXT SP jack in parallel with 42 load
test set
CRF-230B
SW2~19
EXT ANT
42 resistor
Fig. 3-15
SW2~ SW19 frequency coverage and
resistor
Adjusting
Item
Rf Signal
Generator
Frequency
Receiver
Tuning Knob
Setting
tracking adjustment setup
Remarks
SW 2
Frequency
Coverage
2.0 MHz
Fully
counterclockwise
SW 2 osc coil
L324
as
Tune to
2.1 MHz
signal
SW 2-4 ant coil
L301,
SW 2-4 rf coil
L307
Sw3
Frequency
Coverage
sw 3
Tracking
Tune to
2.5 MHz
signal
Fully
counterclockwise
Tune to
3.5 MHz
signal
SW 2 ant trimmer
CT304,
SW 2 rf trimmer
CT322
SW 3 osc coil
L325
*%
SW 3 ant trimmer
CT305
SW 3 rf trimmer
CT323
Band Selector:
SW 2
Adjust for maximum
meter reading on
VTVM.
Band Selector:
SW 3
Adjust for maximum
meter reading on
VTVM.
Sw4
Frequency
Coverage
Fully
counterclockwise
SW 4 osc coil
L326
sw4
Tracking
Tune-to
4.0 MHz
signal
SW 4 ant trimmer
CT306,
SW 4 rf trimmer
CT324
Band Selector:
SW 4
Adjust for maximum
meter reading on
VTVM.
sws
Frequency
Coverage
sw5
Tracking
Fully
counterclockwise
SW 5 osc coil
L327
Tune to
4.6 MHz
signal
SW 5-7 ant coil
L302,
SW 5-7 rf coil
L308
SW6
Frequency
Coverage
Tune to
5.0 MHz
signal
SW 5 ant trimmer
|
CT307
SW 5 rf trimmer
CT325
trimmer
Band Selector:
SW 5
Adjust for maximum
meter reading on
VTVM.
Fully
counterclockwise
SW 6 osc coil
L328
Sweé
Tracking
Tune to
6.3 MHz
signal
SW 6 ant trimmer
CT308,
SW 6 rf trimmer
CT326
Band Selector:
SW 6
Adjust for maximum
meter reading on
VTVM.
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