Coax connections on surge protectors OK for sat or cable? (1 Viewer)

[Bill Fletcher]

The surge protection devices in my price range seem to have 3 coax connections. One of the devices labelled them as 1 satellite and 2 cable. Is there really a difference in the protection required for a satellite input versus a cable input? I have a Philips TIVO satellite receiver which uses two satellite inputs.

Thanks. Bill

 

[Bill Kane]

bill, according to some recent research I found, I conclude that sat and tv coax ports are not interchangeable:

Satellite coax feeds 13v and 18v signals from the dish LNBs. A SAT designed coax surge suppressor port carries about 27v clamping.

Cable tv ports will carry ~ 0.7v clamping.

If one connects the SAT coax into the Cable tv port, that port MAY block the SAT signals.