Heathkit HD 20 Schematic
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Extracted text from Heathkit HD 20 Schematic (Ocr-read)
Page 1
ASSEMBLY AND OPERATION OF THE
HEATHKIT CRYSTAL CALIBRATOR
MODEL HD-20
noon. ML")
SPECIFICATIONS
Frequency Coverage ................... 100 kc to at least 54 me, mharmonics 01 100 kc.
Crystal
Type. ....... . ................. Quartz. fundamental frequency.
Frequency. . . . . .................. 100 kc i .005%.
Pin Spacing ...................... .486".
Pin Size ........................ .050".
Transistor. ........................ 2N409.
Battery Voltage. ..................... 9 volts.
Battery Life ........................ 6 months. normal intermittent service.
Sulitch. ........................... OFF-ON
Dimensions ......................... 2 1/2" wide x 4 1/2" highx2 5/8" deep (overall)
Net Weight .......................... 9 oz.
Shipping Wetght ...................... 1 1b.
Copyright I960
Heclh Company 10/26/62
Page 2
INTRODUCTION
The HEATHKIT" Model BID-20 Crystal Cali-
brator Is an accmte 31918.1 source which pro-
vides output signals a: 100 kc intervals up to
54 msgacycles. Amfleur Radio Operators can
use the HID-201w manypurposes suchu check-
ing receiver dial calibration, checking band
limits, receiver RF alignment, etc.
The I-ID-ZO will also find use in other phases 0!
radio communications which require accurste
marker signals at multiples of 100 kc.
SCHEMATIC DIAGRAM
.0035 um
I f
I \
UHF
o H comm-r
I I
(W KC =
CRY5'IAL .
.-o
g can
A .-
IO 8- 5° -
F IF": .ha -
uu uuF 9V _
BATTERY :_
+
---o
o
N
TRENSI4ggOR
OFF
CRYSTAL CALIBRATOR
MODEI. run-20
Page-2
Page 10
(I i MALE
3%??an ' BATTERY
con Ton
CONNECTOR EC
Pictorial 3
Refer to Pictorial 3 for the following steps.
( ) Connect the wire coming through the grom- { ) Connect one end of a 3" hookup wire to lug
met {ram the transistOr socket to lug 2 01 1 of the switch (5-1).
the switch and the control solder lug (8-1).
The wire Should he 50158113 t30 b0? 1113 2 t ) Install the female (+J battery connector on
and the solder lug. the other endof this bare wire (5-1). Crimp
the connection before solder-in ,
( ) Install the male (-) battery connector 0n the 3
end of the remaining wire coming through
the grammet (8-1). Crimp this connection
before soldering.
Page 10