That sounds right to me. Both the outside cable and antenna would have to come in as inputs. The output would have to be split three ways exactly as described. And the circuit board is an amp for the antenna input.
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Ed & Bev Felker
Retired USAF Col and retired Nurse
Traveling with Lily & Bella ('Teddy Bear' breed)
2015 Vegas 24.1 (E-350)
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