[mythtv-users] Power Line Network Connections and Myth ?
raymond at wagnerrp.com
Mon Sep 27 00:56:11 UTC 2010
On 9/26/2010 20:24, Brian Wood wrote:
> On Sunday, September 26, 2010 11:02:51 am Nicolas Riendeau wrote:
>> On 9/26/2010 12:31 PM, Brian Wood wrote:
>>> Anyone have any experience with any of the various powerline networking
>>> units being sold?
>> I had the occasion to try it and, at least for SD, it works...
>>> I've tried units in the past that provide RJ-11 phone line connections,
>>> and had horrible results, but my home is an older
>> I believe this was/is called HomePNA... I'm not sure that still exists...
>>> structure with Rube Goldberg/Heath Robinson-inspired wiring. My brother's
>>> place is a newer home that should have relatively clean AC wiring.
>> These things are affected by interference from other devices AFAIK and
>> you most probably won't be able to plug them in a surge suppressor (it
>> affected the signal when I tried it).
> Many homes these days have a centralized surge suppressor wired into the main circuit breaker box. I wonder if that might cause problems.
> Or is the problem caused by the suppressor being between the two devices that are trying to communicate?
> I'd guess that perhaps the suppressor shunts the high-frequency (well, higher than 60 Hz.) data carrier, in which case the central one would shunt the carrier to ground, but if there's enough impedance to the carrier in the wiring between the device and the central box, things would probably be OK.
> But again, all I can do is try it I guess.
A surge suppressor is just going to be a device that opens when you
exceed a certain current or voltage. It will do nothing to filter the
power on a line. That sort of behavior is only seen in powerline
filters, and more expensive battery backups.
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