Sujet : Re: CATV feeds
De : blockedofcourse (at) *nospam* foo.invalid (Don Y)
Groupes : sci.electronics.designDate : 08. Nov 2024, 01:01:19
Autres entêtes
Organisation : A noiseless patient Spider
Message-ID : <vgjkcn$2sarr$1@dont-email.me>
References : 1
User-Agent : Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:102.0) Gecko/20100101 Thunderbird/102.2.2
On 11/5/2024 4:38 PM, Don Y wrote:
They're replacing the roads in our neighborhood. That
means lots of excavation.
CATV and phone are notorious for burying their lines
REALLY shallow (*inches* as we have no frost heave to
worry about).
So, the CATV feeds have been dug-up in many cases.
Is the signal that passes through these the same
signal that is delivered to subscribers (i.e., just
"split" off, no down conversion?)?
Cornered a cable guy, yesterday. I was surprised that
many of the "boxes" that I thought were TelCo are
actually CATV kit.
[Also, discovered some of these nondescript boxes have
mains distribution cables (secondary). I will now "think
twice" before standing on them to get a peek over the wall!]
Yes, the signal on the cable is the same as what comes
to your settop.
What sort of power levels would be encountered?
He had no answer, there.
I assume there are multiple "feeds" to the neighborhood
(a few hundred subscribers) so some sort of "head amp"
upstream?
Apparently, fibre is being used to get to many "areas"
and "line extenders" are used to drive long lengths
of cable.