A building has six floors plus a basement. Each floor is 10,000 square feet and has approximately 50 CATV outlets respectively. There is a single hardline trunk cable installed from the basement headend passing through a directional coupler in each floor's telecommunications room (TR). Which leg of the coupler will have the LEAST signal loss?
In a directional coupler, the 'Through' leg generally experiences the least signal loss because it allows the majority of the signal to pass through to the next floor or endpoint. The 'Tap' leg is designed to divert only a small portion of the signal, resulting in a higher signal loss when compared to the 'Through' leg.
TDMM page 13-114 (1160) Directional Coupler.