Topband: WATCH OUT !!Did you get a new cable modem from Comcast? Arris Modem equal lots of QRM

Garry Shapiro garry at ni6t.com
Thu Oct 23 22:35:41 EDT 2014


What is the model number of the offending modem?

Garry, NI6T

On 10/23/2014 3:33 PM, JC wrote:
> Hi guys
>
> I would like to share with you what NX4D just found out. Doug has
> experiencing a strong noise on top band for almost a year. He did try to
> find it everywhere, disconnected all appliances in the house and the noise
> was still roaring.
>
> For some coincidence Dug removed the cable from the modem and the noise
> quit. The issue is that the Arris modem has an internal battery to work
> without AC power and when you remove it from the AC line the modem is still
> generating noise and you can come up into a conclusion the modem is clean.
>
> It is not, actually there are  several reports of RFI going on for several
> years and FCC is doing nothing to stop it.
>
> Here another source of information about that modem
>
> http://forums.comcast.com/t5/Voice-Service-and-Equipment/RFI-Caused-by-Arris
> -Modem/td-p/548591
>
> Doug also found many complaints about Cisco Modems too, especially the
> switching supply wall warts.
>
> So watch out  is you have Comcast cable modem, it is necessary to choke the
> cable and the AC cord with FT240 # 31. With this fix ,the noise dropped from
> s8 to s0 but still audible at Doug receiver.
>
> Regards
> JC
> N4IS
>
>
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>



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