Re: Need help with PLC noise problems in a Manhattan (New York City) apartment

[Marc F Hult <MFHult@xxxxxxxxxxxxxxxxxxxxx>]

On Wed, 14 Dec 2005 13:29:10 GMT, nobody@xxxxxxxxxxxx (Dave Houston) wrote in
message  <43a21592.5985976@xxxxxxxxxxxxx>:

>The repeating couplers do not repeat all 120kHz and they don't really
>amplify (at least those made by ACT don't) but merely repeat the X-10 signal
>during the time frame for the second copy of the X-10 command.

An ACT 230 is "sensitive to 80 millivolts peak
to peak minimum" and outputs "6V peak to peak @ 5 ohms minimum".
http://www.act-solutions.com/pdfs/PCCSpecs/cr230_spec.pdf

So if it receives a signal at 80 millivolts and retransmits it at 6v it does in
fact amplify by 6000/80 = 75X = 37.5 db gain.

And an ACT CR234 which is "sensitive to 25 millivolts peak to
peak" and outputs "5V peak to peak @ 5 ohms" can amplify up to 5000/25 = 200X =
46db gain.
http://www.act-solutions.com/pdfs/PCCSpecs/cr234_spec.pdf

Same principle applies to Leviton's current and past units. For example, the
HCA02-10E is specifically identified as a "System Amplifier".
http://www.leviton-lin.com/catalog/BuildPage.aspx?BuildPageID=2120

...Marc
Marc_F_Hult
www.ECOntrol.org