Heathkit HX 20 Schematic
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Extracted text from Heathkit HX 20 Schematic (Ocr-read)
Page 1
MS!
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SGHEMATIO OF THE
HEATHKITG
836 MOBILE TRANSMITTER
MODEL HX-ZO
ALL VOLTAGE AND RESISTANCE MEASURED WITH 11 MEOONM INPUT VTVM.
ALL RESISTORS ARE 1/2 WATT UNLESS OTHERWISESPECIFIED.
ALL CAPACITORS ARE IN MI UNLESS SHOWN OTHERWISE.
RELAY Kl IS SHOWN IN RECEIVE POSITION.
MODE SWITCH SHOWN IN LOWER SIDEBAND POSITION.
FUNCTION szTCI-I SHOWN IN OPERATE POSITION.
BAND SWITCH SHOWN IN so METER POSITION.
O ALL VOLTAGES ARE MEASURED FROM CHASSIS GROUND.
4990 KC
------v~w-~n-p---__..___._.______-________ ___.
____..,_.._____.n____.._
wo
I2_BY7
DRIVER
________.....~.-.n
Page 2
v2 SEAS
RELAY AMP
SCHEMATIO OF THE
HEATHKITG
883 MOBILE TRANSMITTER
MODEL HX-ZO
ALL VOLTAGE AND RESISTANCE MEASURED wITII II MEOONM INPUT V'WM.
ALL RESISTORS ARE 1/2 WATT UNLESS OTHERWISE-SPECIFIED.
ALL CAPACITORS ARE IN If UNLESS SHOWN OTHERWISE.
RELAY Kl IS SHOWN IN RECEIVE POSITION.
MODE SWITCH SHOWN IN LOWER SIDEBAND POSITION.
FUNCTION szTCI-I SHOWN IN OPERATE POSITION.
BAND SWITCH SI-IOIIIIN IN an METER POSITION.
(:3 ALL VOLTAGE!» SR5 MEASURED FROM CHASSIS GROW.
V 7
I2AT7
5' DE, BAND
05C.
_______,_________-________-.x-u-x-.-n~-\-'-.-.------~-«-~--.-..-____.___
......--___.._-_..'_,____________,________.~...--..-~.-u-____-__~_A__
,____........v_-___,_-.__.__W_______._H_