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Heathkit GR-91 Assembly And Operation Manual page 31

General coverage receiver
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INITIAL
TEST
~
( )
NOTE:
When
installing the tubes,
support the
bottom
of the circuit board with your finger.
( ) Insert
all tubes
in their proper sockets on
the
circuit
board,
The tube type number
appears
near
each tube socket on the cir-
cuit board,
( ) Install the five small knobs on the shafts.
Position the pointers to the counterclock-
wise
front
panel marking for each shaft,
( ) Install the two large knobs, one on the MAIN
TUNING
capacitor shaft and the other knob
on
the
BAND
SPREAD
capacitor
shaft.
ADJUSTMENT
( ) Similarly, switch the BAND switch through
the remaining three bands, checking
for any
stations that you may pick up.
~
~
Turn the Selector Switch to the STBY posi-
tion, The pilot lamps and filaments should
still be on but no stations or background
noise
should
be heard from
the speaker.
~~ ~
Turn the Selector
Switch to the CW posi-
tion
and
turn
the
BFO
to its 12 o'clock
position.
( ) Turn
the unit off and install tube shields
over V2 and V3. Make sure the shield slips
over
the shield
clip on each tube socket.
{ ) Remove
the antenna wire
if one was used,

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