Heathkit IG 5280 Schematic
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Extracted text from Heathkit IG 5280 Schematic (Ocr-read)
Page 1
M AC POWER
+ AND BATTERY
9V CONNECTIONS
PI
vsv POWER SUPFLV
2mm
-----------------
'--------------------l
I .o. l
I «x» I
I . I: _ ' I
I we OSWZ SW3 I00 I
I Tau/"J al%°?rm
I I
I I
I BATTERV ONLY I
I POWER CONNECTIONS I
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I Ew I
I I
I I
h-------------------!
I'm
0
I
.
1'91, M
VERTICAL ZV/CM
HORIZONTAL 5MSEc/cM I
v
OUTPUT CONTROL
MAXIMUM CLOCKWISE 1 1 1
NOIES'
I. RESISIORS ARE 1/2 WAIT, 5'11, UNLESS OTHERWISE NOTED,
Z. RESISTOR VALUES ARE IN OHMS (II-1,000, M'I,DDD.DDOI.
3. CAPACIIDR VALUES ARE IN uF, UNLESS OTHERWISE NOTED.
r0
9:
AF OUTPUT
./\1/\ (\
SCHEMATIC or THE
HEATHKIT®
RF OSCILLATOR
MODEL IG-5280
4 v DENDIES CIRCUIT GROUNDI
SOnENotss A no VOLTAGE MEASURED FROM THE POINT
INDICAIED IO cnouun WITH IHE rouowmc coumnous
A. RANGE SWIICH ISWII MAXIMUM COUNTERCLOCKWISE.
B, IUNING CAPACIEOR ICIZ,CI!I MAXIMUM
COUNIERCIOCKWISE.
CI AF AMPLITUDE MAXIMUM COUNIERCLOCKWISE,
D, MEASUREMENTS MADE WI'IH A HIGH IMPEDANCE
VOLTMEIER.
(LU DENOYES A CIRCUIT BOARD CONNECTION.
LO omens OTHER connscnousI
8. SWITCHES ARE SHOWN IN CCW POSIIION. "D" ON SWITCHES
DENOTES DUMMY LUGS USED FOR ELECTRICAL 'IIE POINISI
9, SWI.AR SHORTS ALL UNUSED COILS I0 GROUND.
BAND 5A D
SWI
an
701 L
CAFACITANCEj
AF (ARrsEE NOTE 9)
0-47
I413
3171,}A
,E seruu
337. MODULATION
VERTICAL .Iv/cM
HORIZONTAL .ZMSEC/CM
TUNE AND RANGE MAXIMUM
COUNTEECLOCKWISE
MODULATION OFF
VERTICAL .Iv/cM
DID-32
COUNTERCLOCKWISE
5 mm
a; aunzw
HORIZONTAL ZHSEC/CM
TUNE AND RANGE MAXIMUM