Heathkit GR-78 - Page 12

Page 76
TRIMMER CAPACITOR
‘ADJUSTMENT
OSCILLATOR
PROCEDURE FOR BANDS A,B, C,, £, AND F,
“Tune In a station with a known frequency near the high
frequency (ight) end of the band. Check the dal to see If
the pointer i exactly on, above, or below the correct
transmitting frequency of the station. If the pointer is
‘exactly on the corect frequency, proceed to the antenna
trimmer adjustment, If the pointer is above the correct
frequency, proceed with step A. Ifthe pointer is below the
correct frequency, proceed to step 8,
NOTE: When turing sn oscillator trimmer capacitor
counterlockwite, the station wil move toward the low
frequency (let) end of the dial. Turning the otcilator
‘immer capacitor clockwise will move the station toward
the igh frequency (right) end of the dal Inthe following
stops, you wil be Instructed to turn the trimmer capacitors
counterclockwise or clockwise. Reed each step and
understand it before performing the stp,
‘A. Ifthe pointer is above the correct frequency, tun the
TUNING contro! counterclockwise until the pointer
Indicates the correct transmitting frequency of the
station, Now turn the oscillator trimmer capacitor
slowly in counterclockwise direction until you can
hear the station agnin. Now proceed to the antenna
‘immer adjustment
11 the pointer it below the eorract frequency, turn the
TUNING control clockwise until the pointer indicates
‘the correct tranumiting frequency ofthe station, Now
‘um the oscillator trimmer capecitor slowly in a
clockwise direction until you can hear the station
agin, Now proceed to the antenna trimmer
adjustment.
Tune in the station for maximum meter reading,
Check to be sure the pointer is exactly over the
correct transmitting frequency. If the pointer isnot,
repeat this odjstr
NOTE:
If
you
are
not
satisfied
withthe
alignment
at
this
time,
you
can
turn
the
oscillator
trimmer
capacitor
clockwise
until
its
snug.
Then
return
tothe
atart
ofthe
Alignment
sation
and
begin
sain.