freeskier93B

I’m assuming return loss in this context is reflected power. Does the thing measure insertion loss as well? What are the units of the return loss measurements? Is it an actual power level or a ratio (VSWR)?

Unless you really kinked the shit out of the cable somewhere your biggest source of reflected power is going to be at connectors. Could just be a bad termination, but I’d also be surprised of any consumer stuff is at all impedance matched anyway…

Having performed thousands of return loss measurements on satellite RF systems, you’re going to drive yourself nuts with hard requirements on return loss. Unless it’s crazy high, who gives a shit.