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A GRD
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B GRD
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WHEN 4788 KTU IS USED W ITH 570A OR ?BOA KSU.
CHANNEL
F
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TRANSLAT I ON
AND
ENABLE
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MEMORY AND
RELAY
DR
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Fig. 2 1 -Condensed Functional Schematic of 4788 KTU {TOUCH-TONE Adapter Circuit)
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Y2
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