Heathkit GR-78 - Page 11

Page 75
ALIGNMENT
WITHOUT
INSTRUMENTS
‘Th
alignment
without
instruments
i
aeomplished
by
using
signals
of
known
frequencies
from
radio
stations.
Fr
best
results,
use
an
external
antenna,
ifn
external
antenna
i
not
slready
available,
refer
to
“Antenne
Installation’
on
Page
80,
{In
the
following
steps,
only
the
trimmer
eapacitrs
wil
be
adjusted.
The
colls
are
preadjusted
and
should
not
be
‘hanged.
The
ANT
and
RF
trimmers
will
be
adjusted
for
ak
(strongest)
signals
using
the
Relative
Signal
moter
In
the
Receiver.
If
the
signal
is
too
weak
for
#
good
meter
Indcation,
i
wil
be
necessary
to
adjust
the
trimmers
foF
the
‘oudest
signal
from
the
speaker.
The
OSC
trimmers
wil
be
‘adjusted
9
that
the
recived
station
appears
at
the
proper
frequency
on
the
dal,
A station near the high and of the band shouldbe saected
for
best
results,
Refer
to
the
following
information
‘concerning
station
location
and
identification
for
bands
A
through F
BAND A
Refer
to
Page
91
in
this
Manual
and
to
Page
9
in
the
‘Hasthkit
Logs and
Charts"
took
supplied
with
the
Kit
Selact
weather
information
station
in
your
area,
or
eal
¢
local
airport
to
see
if
thera
is
«low-frequency
navigaton
‘beacon
station
operating
near
your
location,
BAND B
Refer
to
your
newspaper
for
some
local
broadcast
stations
‘that
can
be
received
in
your
ares,
For
best
results,
choose
@
Staton
nar
the
high
frequency
end
of
the
bard,
BANDS C THROUGH F
‘These
bands
can
be
aligned
by
using
broadcast
stations
‘between
1.3
t0
1.6
MHz,
or
one
of
the
following
types
of
stations:
‘The United States Government operates two radlo satlons
tht give standard time and frequency signa: WV In
Boulder, Colorado, and WWVH in Hawa, Those stations
transmit on the following frequencies: 2.5 MHz, 5 MHz, 10,
Miz, 15 MH2, 20 MHz, and 25 MHz, The trensmitted
signals include a tcking sound (onesecond time ticks), 440,
He and 600. He audio tones, station identification in
Internation Morse Code, voice, or voice and Morse Code
time signals, These signals are uselly best received early
‘the morning or lateat night,
‘The othor types of stations ate a marine station
‘diotelephone,
an
wmateur
radio
oF
CB
station,
If
you
or
8
{riand has » marine rediotelephone and know what the
transmitting frequency i, it can be used to align band C,
‘The amateur radio station can be used to align bande C
‘through F. The C8 station canbe used to align band F on|
If one ofthese Wo types of stations i used, the pointer on
the Receiver main tuning dial must be set tothe exact
frequency ofthe transmitting station,
{) Set the controls and switche as follows:
BANDSPREAD-Fully counterclockwise,
‘AF GAIN-OFF,
RF GAIN~Fully clockwise
Rov.sTBY-Acv.
‘CALTo position opposite CAL,
AN.CW/SSB-AM.
AVoMVC-aVG,
ANLOFF-OFF,
BAND-Band 8,
TUNING—Fully clockwise,
() Turn the Receiver on and set the AF GAIN control to
the dsired listening ove
NOTE: It in desirable to align band B frst, becouse of the
‘eater number of stations to choose from, Allg all sik
bands using the following chat,