Alignment 0.0.0 - Heathkit HR-1680 Manual

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ALIGNMENT
You can completely align your Receiver without any external
equipment. You may be able to improve the sensitivity by
using a VTVM and an RF generator, but they are not neces-
sary.
If you do not obtain the proper results during alignment, pro-
ceed to the "In Case of Difficulty" section on Page 83.
ALIGNMENT PREPARATION
Refer to Figure 2-1 for the following steps.
( ) Prepare a 12" gray wire.
( ) Solder a PCB connector on each end of the 12" wire.
Set this jumper wire aside. It will be used during "HFO Coil
Alignment."
() Refer to Figure 2-2 and use a pair of pliers to push the 1"
steel blade into the smaller end of the nut starter until
1/8" remains exposed. Use this tool when you are in-
structed to adjust trimmer capacitors.
(N
CN
ten
BEND OVER
AND SOLDER
CONNECTOR
Figure 2-1
12" GRAY
Page 71
NUT STARTER
Figure 2-2
METAL BLADE
Refer to Figure 2-3 (in the "Illustration Booklet") for the follow-
ing steps.
NOTE: The Figure shows only one extender assembly. You
will actually be assembling three of these assemblies when
you perform the following steps.
( ) Unfold and straighten the large bare wire as much as
possible.
( ) Cut eighteen 4-1/2" lengths of large bare wire.
(_ ) Solder a female connector on one end of each of the 18
large bare wires.
() Cut the ears from the three extender terminal housings
and the three remaining chassis connectors.
NOTE: Perform the next four steps three times, once for each
extender assembly. :
() () (.) Push one of the female terminals on the end of a
large bare wire into each of the six holes in an
extender terminal housing. Push each terminal
until it locks in piace.
() () () Cut the free ends of the six bare wires, if neces-
sary, until their ends are even.
() ().€) Solder the free ends of the bare wires to the six
terminals on a chassis connector.
() () ©) Check the extender assembly. All connections
should be soldered. Also, make sure the bare
wires do not touch each other.
( ) Set the three extender assemblies aside, they will be
used during "Calibrator Adjustment."