Heathkit HD 1481 Schematic

Page 1

VOLTAGE 0 we voc VAC

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I ' ' N/C : E
I CONTROL : REMOTE : RY 1 1 | '
I UNIT . UNIT -‚¬12 , : :
g : . : W 5 WC I .
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I ANTENNA I I 7 . |
: SWITCH : . I ____ _1 I :
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: SW102 I..H I l
: Tpo FEEDLINE l I
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: POSITION I 2 3 4 . AN
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: 22 : ANT?
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VERTICAL | :
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: : ANT3
3 DIPOLE INVERTED v : :
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I ANT4
SCHEMATIC OF THE : :
HEATHKIT® :
REMOTE COAX I
SWITCH I
NOTES:
1. RESISTORS ARE Il2-WATT. 5% UNLESS MARKED OTHERWISE.
REMOIE RESISTOR VALUES ARE IN OHMS (K=1.ooo: M=1.ooo.ooo).

2. ALL CAPACITOR VALUES ARE IN uF (MICROFARADS) UNLESS
STATION MARKED IN DF (PICOFARADS).

FEEDLINE a. VINDIOATES A CIRCUIT BOARD GROUND.
oumo 4. gINDIcATES A cmssns GROUND.

5. PARTS IN THE SHADED AREAS ARE CRITICAL TO CONTINUED
8AFETY. REPLACE ONLY WITH THE SAME RATED PART. OR
WITH THE CORRECT HEATH COMPANY PART

l TRANSCEIVER l

BLOCK DIAGRAM PIS. 7