Agreed :)

The larger culprit locally, at least in my part of SW Idaho, is leakage from
commercial power transmission...

Ingress on an analog carrier from digital OTA tends to have a very
intermittent C/NR reading... Our standard JDSU DSAM3600 meter has a
difficult time detecting it as it's refresh rate is just a bit too slow.

On the SDA5000, the "monitor" function that allows you to listen to the
audio of a specific frequency, when on an analog CATV carrier with DTV OTA
ingress, sounds like a very low "buzz saw" carrier on top of the audio
carrier of the CATV channel - almost like listening to the raw audio of some
of the military two way radio encryption...

We insert a "warble" on to the lower portion of the audio carrier on CATV
channel 17 - the CLI detectors scream all the time due to power leaks; it's
the ones with the warble that we have the ability to fix.

Average CATV leak (egress) in this system prior to fixing is usually about
40 mv/m. Average commerical power (transmission/distribution) leak pegs our
CLI meters at well over 200 mv/m.


73s,

AJ, K6LOR

On Fri, Jan 9, 2009 at 7:21 AM, Chuck Kelsey <[email protected]> wrote:

>   My bet is that RF ingress will continue to cause CATV problems only now
> it
> will be harder to diagnose. The egress speaks for itself.
>
> Chuck
> WB2EDV
>
> ----- Original Message -----
> >> As someone that works in the CATV industry...
> >>
> >> I'm truly looking forward to the analog-shutoff in February...
> >>
> >> No more "ghosting" trouble calls due to ingress...
> >>
> >>
> 
>

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