Which parameter is specified as +15 dB?

• A. Headend room amplifier gain
• B. In-path filter attenuation
• C. In-line connector loss
• D. Return path loss

Answer: (A)

In this context, positive dB values represent amplification, not loss. An amplifier in the headend room boosts the signal, so its specification is given as a gain figure. If you see +15 dB, that means the headend room amplifier increases the signal level by 15 dB as it starts distributing through the system. The other options describe loss elements—filters, connectors, and the return path—which are specified in terms of attenuation or loss, not gain. Therefore, the parameter described as +15 dB is the headend room amplifier gain.