In message , Sal writes

"Michael Coslo" wrote in message
...

But the only time there might be an issue was if the system was
over-amped, then there could be problems with proof of performance
certification.

I saw a case of that twenty years ago in Key West, Florida. I suspect the
authorities had to look the other way because affordable technology to do it
better didn't exist. The Florida Keys were served out of a headend that was
close enough to the mainland to get decent OTA signals. however, by the
time those Miami signals got to Key West, they were pretty bad. I have no
idea how many amps were used. (IIRC, local origination channels were OK.)

I think five amps is about the limit due to added noise and cross-mod.

"Sal"

In practice, without serious and constant TLC, the length of cascades of
amplifiers is usually limited by the frequency response flatness (or
lack of it), and the ability to maintain it. I think that the maximum
I've been involved with was a cascade of about 20 normal trunk
amplifiers plus three or four distribution amps / line extenders on the
end. Thank heavens these days for optical.
--
Ian