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| RP-F11/F11L
FM-IF ALIGNMENT (Fig. 8)
1. Set the select switch to FM position.
2. Turn on both sweep generator and oscilloscope, and allow a fifteen-minute warm-up period.
5. Connect the SWEEP VOLTAGE
OUTPUT of the sweep generator to the oscilloscope.
6. Proceed as outlined in the FM-IF ALIGNMENT
CHART.
FM-IF ALIGNMENT CHART
Connection
Signal coupling
Turn the coil L106 fully
counterclockwise to ob-
tain a single peak.
Fig. 9
Adjust coil T101 and
Set scope for con-
necting output
signal from TP-3
to vertical axis
Sweep
generator of
10.7
MHz
Tuning Knob
fully counter-
Connect sweep
generator output to
a three-turn loop
antenna of 10 cm
diameter.
center freq.
with 10.7
MHz
meter.
IF SWEEP TEST
Figure 8
clockwise
(Lowest
Frequency)
of scope ''V" and
sweep generator
output to
horizontal axis
"HT,
T105 in order until the
best single peak is ob-
tained.
Finally turn the coil
T106 to obtain S curve.
Fig. 10
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