Heathkit GR-54 - Alignment Without Instruments (Continued); Coil Adjustment Steps

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Page 41.
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The coils that are adjusted in the foliowing
steps have been preset at the factory, There-
fore. it should not be necessary to adiuet them
owe “sy Be MAAR BES BR A eh i ee he vay eS Le
more than 1/2 turn in either direction, Antenna
trap (#40-731) should not be adjusted,
In the following steps the IF amplifiers will be
adjusted for maximum gain,
{ ) Tune in any station that shows a reading of
I or more on the tuning meter,
( ) Adjust coil L16 for a maximum meter
reading,
() Turn the MAIN TUNING for a maximum
mater indication: then reneat the tuo
Ok eh ad SEANAD aianar | then - he
ceding steps,
In the following steps, the oscillator coils of
bands A, B, C, D, and E will be adjusted so
the station being received is correctly indi-
‘cated on the dial, Also, the RF and antenna
coils are adjusted for maximum sensitivity,
( ) Turn the BAND switch to B and tune ina
local station of known frequency, Turn the
MAIN’ TUNING until the dial pointer points
ta eoarrart frequency for this station,
| de all et ee Te a ey
Adjust coil #40-652 to the left or right
until the correct station is heard,
(
—
( } Tyme in a station near 1000 kc, Adjust -
coil #40-647 for a maximum meter read-
ing.
( )} Turn the BAND switch to A, Most stations.
heard on this band are aeronautical or
marine
navigational
signals,
A
phone
call
to
a
local
airport
will
disclose
whether
a beacon is working in the vicinity and what
its frequency is,
( ) Turn the MAIN TUNING until the dial
pointer points to the correct frequency
for this station,
sen
( ) Adjust coil #46-653 until this beacon station
is heard at its correct dial setting,
( ) Tune in a station near 400 ke, Adjust coil
SAN SORP few noe eriemeeen miata aanndine
Ttv-VUasi AWE aga GALILEE MLELEL i CAME
( ) Tune in a station near 250 kc. Adjust coil
#40-648 for a maximum meter reading,
NOTE: The United States Government operates
two radio stations that give standard time and
frequency signals: WWV in Washington DC, and
WWVH in Hawaii, These stations transmit on the
following frequencies: 2,5 mc, 5 mc, 10 me, 15
mc, 20 me, and 25 me, The transmitted signals.
eoann wan tales)
include a ticking sound {one-~second time WAS,
440 cps and 600 cps audio tones, station identi-
fication in international Morse Code or by voice,
and voice and Morse Code time signals,
If at all possible, WWV or WWVH signals
should be used to adjust the coils on bands
C, D, and E, If WWV and WWVH cannot be heard
make the following adjustments at some other
time of day or night when they can be heard,
when band conditions are more favorable,
( ) Turn the BAND switch to C and the MAIN
TUNENG so the dial pointer is at 3 mc.
_— —
Adjust coil #40-656 until the WWV or
WWVH signal is heard,
Adjust
coils
#40-651
and.
#40-660
for
a
maximum
meter
reading,
—,
—
( } Turn the BAND switch to D and the MAIN
TUNING so the dial pointer is at 10 me
fo Adisiot ant] BAN BRE ctleestes 1421 th TERE WW
\
oo”
467USC
CCl
TSU-U0d
S10Way
UN
Ue
Www
¥
OF
WWVH signal is heard,
( ) Turn the MAIN TUNING so the dial pointer
is at 5 me, to see if the last step has
effected the adjustment at this location on
the dial, ii WWYV or WWVH is not heard,
readjust coil #40-655.
( ) Tune in a station near 12,5 me, Adjust coils
#40-650 and #40-659 for a maximum meter
reading,