[PVRCNC] What! No Voltage?

[Kent Winrich]

Should have asked him to put his tongue on the line.... and then see how
those decibels felt.
Kent
K9EZ/4

On Mon, Jun 15, 2009 at 3:53 PM, Jim Jordan, K4QPL <k4qpl at nc.rr.com> wrote:

>
> Cable repairman down at the coast came to investigate on Saturday why the
> cable modem kept dropping out causing erratic internet access. Having
> nothing better to do I thought I'd learn something about how the bits and
> bytes get to us from the cable.
>
> As he was cleaning up and replacing connectors corroded by the salt air, I
> made the innocent comment: "I can see where corrosion on those connectors
> could cause voltage drop and loss of signal"
>
> To which he set me straight:  "There is NO voltage on a digital
> cable---only
> decibels".
>
> After replacing some cables, connectors, lightning protector, splitter and
> anything else readily to hand and the system was working again, he then
> pulled up the analysis software on his laptop and said that everything was
> now fine at our end except the "Receiving SNR line".  "Minimum decibels on
> the 'Receiving SNR line'  should be >33 and we were only getting 30db". I
> looked at the screen and while trying to keep a straight face on that
> explanation of the signal to noise ratio analysis being done by the
> software, I asked what was the problem with "the receiving SNR line"?
> Response: "We're having some issues with that in the system". End of
> explanation.
>
> I wanted to ask if they had anyone out looking for those lost decibels that
> should have been on the 'Receiving SNR Line' but thought better of it. As
> there's no voltage involved, I shouldn't be concerned.
>
> Painting by numbers applied to tech service     ;-)
>
> 73,
>
> Jim, K4QPL
>
>
>
>
> ______________________________________________________________
> PVRCNC mailing list
> Home: http://mailman.qth.net/mailman/listinfo/pvrcnc
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:PVRCNC at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>