Radio Shack Pro-60 - Monitoring and Storing Frequencies; Storing Frequencies into Channels

1st IF BPF een Alignment
Normally, additional adjustment is not necessary for BPF coil T101 since it has been factory aligned. Only when
the shape or pitch of T101 gets changed accidentally, readjustment is required as described below, referring to
Figure 7.
Control Setting
OFFNOLUME control: ON.
SQUELCH control: CCW.
Select channels 9 and 10.
Test Instrument Connection
Connect the signal generator
to the Ant. connector, and the
oscilloscope, AC SSVM,
distortion meter, and 8-ohm
load to EXT. speaker jack.
See Figure 7.
(1st IF Center Frequency (609.6 MHz)
3.2 MHz
Adjust Result
T101 1. Select channel 9 and set the
signal generator frequency to
31.995 MHz.
FM: 3 kHz deviation
1 kHz
modulation, and 0.5
" out-
put.
2. Adjust T102 to maximum
sensitivity.
3. Select channel 10 and set
the signal generator fre-
quency to 32 MHz.
FM: 3 kHz deviation at 1 kHz
and
0.51lV output.
4. Readjust T102 to maximum
sensitivity.
Note: Align the balance of
channel 9 and channel 10
sensitivity to be the same. See
Figure 8.
at CH9 (31.995 MHz)
1stIF Frequency
608.005 MHz
Figure 8
-13-
atCH10 (32 MHz)
1stIF Frequency
611.2 MHz