Section VI
1. Turn MEGACYCLES control to 135.5 and check
in Z1502. This adjustment is on the slug rack on top
for proper tuning of Z1502 with the tuning wand. If
of the chassis. (See figure 6-12.)
inserting either end into L1508 increases the output
as read on the meter in the CAR position, tune C 1529
n. Repeat steps 1 and m above until the circuit is in
on the final tank Z1502, for a maximum on the meter.
tune at both ends. Slugs are always adjusted at 108.5
(See figure 6-11.) The brass end of the tuning wand
me and the trimmer capacitors at 135.5 me. If the
serves as an adjusting tool Only a slight change in
voltage on E1508 is greater than -1.0 volt over the
tuning capacitance should be necessary.
entire frequency range, further alignment is unneces-
sary. If further alignment is required, cent inue with
step o below.
Indiscriminate tuning of the capacitor to its
o. Connect a d-c vacuum tube voltmeter to E1508 to
extreme maximum and minimum settings is
measure the output of quadrupler V1505. Tune to
unnecessary and may result in damage to the
135.5 me and check each coil in Z1501 (L1505 and
capacitor.
L1506) for resonance. Adjust the trimmers on the side
of Z1501 (C1518 and C1523) if necessary using the
Recheck the tuning with the tuntng wand.
right angle screwdriver provided. (See figure 6-11. )
m. Turn MEGACYCLES control to 108.5 and check
p. Tune to 108.5 me and check for resonance. Ad-
for resonance with the tuning wand as in step h. If
just the L1505 and L1506 slugs in 21501 if necessary.
the circuit is not in resonance adjust the L1508 slug
(See figure 6-12.)
