Advertisement
SS
aaa
Page 41.
(ee
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,
—,
—
( } 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,
Advertisement
