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Heathkit GR-91 Assembly And Operation Manual page 42

General coverage receiver
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Refer to Figure 28 (fold-out from Page 34)for the
alignment positions,
SET BAND
SWITCH TO:
TUNE SIGNAL
GENERATOR TO:
455 ke
B
455 ke
B
Repeat steps 1 and 2,
ADJUST FOR MAXIMUM
METER READING
IF-1 top and bottom
IF-2 top and bottom
Rotate the BAND SPREAD capacitor fully clockwise,
Adjust the ANT TRIMmer
capacitor so the plates are 50% meshed,
30 me
D
30 me
c8D
10 me
D
10 me
D
10 mc
L5
10 me
C8A
. Tune
the Receiver to 10,910 mc and check for the image frequency. EF the image frequency
does not appear at this point, repeat steps 5 through 9, being careful to align to the correct
frequency, The image frequency is 910 kc below the signal frequency on Bands A,B,
and C.
L6 and L2
»
4me
Cc
4mc
. 10 mc
10 mc
c4
. 4me
4 mc
L6
. 1.5 me
1.5 me
L7

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