Elecraft

OT: RFI problem on 80,40 with AT&T Uverse

Classic

List

Threaded

10 messages Options

Elecraft mailing list

OT: RFI problem on 80,40 with AT&T Uverse

Off topic, but perhaps others have had the same problem.
I have a K3/100 + ATU (ser#3542), purchased as a kit in 2009. No problems with RFI until April of 2016. All of a sudden RFI on 80,40(didn't try 160). Been off these bands ever since, although all my buddies hang out on 40. Have had AT&T out 4 times, no help.
OK...I just found an AT&T Uverse user forum that discuss this very thing, same symptoms as mine, with a ham participating. If I am reading it correctly, they are saying that the bands that Uverse uses for multiplexing includes 160,80 & 40 frequencies. One of the contributors said that AT&T eventually upgraded his equipment, including replacing some twisted-pair cables with CAT5 cables, and it solved the problem. I am supposed to get a call Monday from an AT&T guy who is familiar with this. But I would like input from my Elecraft ham buddies.
Anyone out there experienced this before? I don't think it is just me. Anyone out there had this problem with AT&T Uverse and gotten it fixed?
Reply off-line if you wish, but I believe there may be several on this reflector who would find responses useful to them.
Thanks!JohnK5ENQ
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [hidden email]

Fred Moore-2

Re: OT: RFI problem on 80,40 with AT&T Uverse

keep everyone filled in on the progress.. Fred

Fred Moore
email: [hidden email]
[hidden email]
Phone: (321) 217-8699

On 3/17/17 3:37 PM, John Saxon via Elecraft wrote:

> Off topic, but perhaps others have had the same problem.
> I have a K3/100 + ATU (ser#3542), purchased as a kit in 2009. No problems with RFI until April of 2016. All of a sudden RFI on 80,40(didn't try 160). Been off these bands ever since, although all my buddies hang out on 40. Have had AT&T out 4 times, no help.
> OK...I just found an AT&T Uverse user forum that discuss this very thing, same symptoms as mine, with a ham participating. If I am reading it correctly, they are saying that the bands that Uverse uses for multiplexing includes 160,80 & 40 frequencies. One of the contributors said that AT&T eventually upgraded his equipment, including replacing some twisted-pair cables with CAT5 cables, and it solved the problem. I am supposed to get a call Monday from an AT&T guy who is familiar with this. But I would like input from my Elecraft ham buddies.
> Anyone out there experienced this before? I don't think it is just me. Anyone out there had this problem with AT&T Uverse and gotten it fixed?
> Reply off-line if you wish, but I believe there may be several on this reflector who would find responses useful to them.
> Thanks!JohnK5ENQ
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]

briancom

Re: OT: RFI problem on 80,40 with AT&T Uverse

These Uverse RFI problems that others reported made me choose COMCAST
when I moved. I guess you are pretty much locked in.

I hate COMCAST but trying to solve these problems was considered more of
a hassle with the possibility of no solution.

The other issue is some reported that the Uverse modems generated
significant RFI on receive.

73 de Brian/K3KO

On 3/17/2017 19:53 PM, Fred Moore wrote:

> keep everyone filled in on the progress.. Fred
>
> Fred Moore
> email: [hidden email]
> [hidden email]
> Phone: (321) 217-8699
>
> On 3/17/17 3:37 PM, John Saxon via Elecraft wrote:
>> Off topic, but perhaps others have had the same problem.
>> I have a K3/100 + ATU (ser#3542), purchased as a kit in 2009. No problems with RFI until April of 2016. All of a sudden RFI on 80,40(didn't try 160). Been off these bands ever since, although all my buddies hang out on 40. Have had AT&T out 4 times, no help.
>> OK...I just found an AT&T Uverse user forum that discuss this very thing, same symptoms as mine, with a ham participating. If I am reading it correctly, they are saying that the bands that Uverse uses for multiplexing includes 160,80 & 40 frequencies. One of the contributors said that AT&T eventually upgraded his equipment, including replacing some twisted-pair cables with CAT5 cables, and it solved the problem. I am supposed to get a call Monday from an AT&T guy who is familiar with this. But I would like input from my Elecraft ham buddies.
>> Anyone out there experienced this before? I don't think it is just me. Anyone out there had this problem with AT&T Uverse and gotten it fixed?
>> Reply off-line if you wish, but I believe there may be several on this reflector who would find responses useful to them.
>> Thanks!JohnK5ENQ
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:[hidden email]
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> Message delivered to [hidden email]
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]
>

k6mkf

Re: OT: RFI problem on 80,40 with AT&T Uverse

I had similar RFI issues with AT&T Uverse equipment, both on RX and TX.

I went with Comcast and have no RFI issues with them. Nearly our entire
neighborhood is Comcast. AT&T tried to deliver Uverse here via 50-year old
twisted pairs and it was a mess.

- 73 and good DX de Mike, K6MKF, IDXC 2017 Committee

> -----Original Message-----
> From: Elecraft [mailto:[hidden email]] On Behalf Of
brian

> Sent: Friday, March 17, 2017 1:11 PM
> To: [hidden email]
> Subject: Re: [Elecraft] OT: RFI problem on 80,40 with AT&T Uverse
>
> These Uverse RFI problems that others reported made me choose COMCAST
> when I moved. I guess you are pretty much locked in.
>
> I hate COMCAST but trying to solve these problems was considered more of a
> hassle with the possibility of no solution.
>
> The other issue is some reported that the Uverse modems generated

significant

> RFI on receive.
>
> 73 de Brian/K3KO
>
>
>
> On 3/17/2017 19:53 PM, Fred Moore wrote:
> > keep everyone filled in on the progress.. Fred
> >
> > Fred Moore
> > email: [hidden email]
> > [hidden email]
> > Phone: (321) 217-8699
> >
> > On 3/17/17 3:37 PM, John Saxon via Elecraft wrote:
> >> Off topic, but perhaps others have had the same problem.
> >> I have a K3/100 + ATU (ser#3542), purchased as a kit in 2009. No

problems
> with RFI until April of 2016. All of a sudden RFI on 80,40(didn't try
160). Been
> off these bands ever since, although all my buddies hang out on 40. Have
had
> AT&T out 4 times, no help.
> >> OK...I just found an AT&T Uverse user forum that discuss this very
thing,
> same symptoms as mine, with a ham participating. If I am reading it
correctly,
> they are saying that the bands that Uverse uses for multiplexing includes
160,80
> & 40 frequencies. One of the contributors said that AT&T eventually
upgraded
> his equipment, including replacing some twisted-pair cables with CAT5
cables,
> and it solved the problem. I am supposed to get a call Monday from an
AT&T
> guy who is familiar with this. But I would like input from my Elecraft
ham
> buddies.
> >> Anyone out there experienced this before? I don't think it is just me.
Anyone
> out there had this problem with AT&T Uverse and gotten it fixed?
> >> Reply off-line if you wish, but I believe there may be several on this
reflector

> who would find responses useful to them.
> >> Thanks!JohnK5ENQ
> >>
> _____________________________________________________________
> _
> >> Elecraft mailing list
> >> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> >> Help: http://mailman.qth.net/mmfaq.htm
> >> Post: mailto:[hidden email]
> >>
> >> This list hosted by: http://www.qsl.net Please help support this
> >> email list: http://www.qsl.net/donate.html Message delivered to
> >> [hidden email]
> >
> >
> _____________________________________________________________
> _
> > Elecraft mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/elecraft
> > Help: http://mailman.qth.net/mmfaq.htm
> > Post: mailto:[hidden email]
> >
> > This list hosted by: http://www.qsl.net Please help support this email
> > list: http://www.qsl.net/donate.html Message delivered to
> > [hidden email]
> >
> _____________________________________________________________
> _
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html

Guy Olinger K2AV

Re: OT: RFI problem on 80,40 with AT&T Uverse

In reply to this post by Elecraft mailing list

I had this problem in spades especially 160. In the end, after some number
of repairs to AT&T cabling, etc, the replacement of a 2Wire 3800 gateway
box with a 3801 killed it dead.

IF you have a 3800, it will need to be replaced, although the sudden
appearance seems to sound like something suddenly gone wrong. Make sure all
the little telephone plugs get exercised to clean them up and see if it
"suddenly" goes away.

In any event back in 2011 I was involved in a very careful staged repair,
item by item to see what items made any difference. From my situation and
about a dozen parallel similar extended careful replacement exercises, AT&T
seems to have it solved and the solution is in their "book".

So just let them do their thing.

73 and good luck,

Guy K2AV

On Fri, Mar 17, 2017 at 3:37 PM, John Saxon via Elecraft <
[hidden email]> wrote:
> Off topic, but perhaps others have had the same problem.
> I have a K3/100 + ATU (ser#3542), purchased as a kit in 2009. No
problems with RFI until April of 2016. All of a sudden RFI on 80,40(didn't
try 160). Been off these bands ever since, although all my buddies hang
out on 40. Have had AT&T out 4 times, no help.
> OK...I just found an AT&T Uverse user forum that discuss this very thing,
same symptoms as mine, with a ham participating. If I am reading it
correctly, they are saying that the bands that Uverse uses for multiplexing
includes 160,80 & 40 frequencies. One of the contributors said that AT&T
eventually upgraded his equipment, including replacing some twisted-pair
cables with CAT5 cables, and it solved the problem. I am supposed to get a
call Monday from an AT&T guy who is familiar with this. But I would like
input from my Elecraft ham buddies.
> Anyone out there experienced this before? I don't think it is just me.
Anyone out there had this problem with AT&T Uverse and gotten it fixed?
> Reply off-line if you wish, but I believe there may be several on this
reflector who would find responses useful to them.

> Thanks!JohnK5ENQ
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]

--
Sent via Gmail Mobile on my iPhone
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [hidden email]

Elecraft mailing list

Re: OT: RFI problem on 80,40 with AT&T Uverse

In reply to this post by briancom

Thanks, Brian. We do have COMCAST in our area, but we had bad luck with them before. May have to switch back.
--JohnK5ENQ

From: brian <[hidden email]>
To: [hidden email]
Sent: Friday, March 17, 2017 3:11 PM
Subject: Re: [Elecraft] OT: RFI problem on 80,40 with AT&T Uverse

These Uverse RFI problems that others reported made me choose COMCAST
when I moved. I guess you are pretty much locked in.

I hate COMCAST but trying to solve these problems was considered more of
a hassle with the possibility of no solution.

The other issue is some reported that the Uverse modems generated
significant RFI on receive.

73 de Brian/K3KO

On 3/17/2017 19:53 PM, Fred Moore wrote:

______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [hidden email]

______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [hidden email]

Elecraft mailing list

Re: OT: RFI problem on 80,40 with AT&T Uverse

In reply to this post by k6mkf

Yep, our input from them is on twisted pair. May have to go back to Comcast. I am supposed to hear from a knowledgeable AT&T guy Monday.
Thanks,JohnK5ENQ

From: Mike Flowers <[hidden email]>
To: 'brian' <[hidden email]>; [hidden email]
Sent: Friday, March 17, 2017 3:38 PM
Subject: Re: [Elecraft] OT: RFI problem on 80,40 with AT&T Uverse

I had similar RFI issues with AT&T Uverse equipment, both on RX and TX.

I went with Comcast and have no RFI issues with them. Nearly our entire
neighborhood is Comcast. AT&T tried to deliver Uverse here via 50-year old
twisted pairs and it was a mess.

- 73 and good DX de Mike, K6MKF, IDXC 2017 Committee

> -----Original Message-----
> From: Elecraft [mailto:[hidden email]] On Behalf Of
brian

significant

Message
> delivered to [hidden email]

______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [hidden email]

______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [hidden email]

Elecraft mailing list

Re: OT: RFI problem on 80,40 with AT&T Uverse

In reply to this post by Guy Olinger K2AV

We supposedly have the latest modem. When I "suddenly" had RFI it was shortly after going from an older modem to this one...weird.
Hopefully Monday I will hear from AT&T with a solution (for them to fix). Sounds like they should have a whole file on this issue.
Thanks,JohnK5ENQ

From: Guy Olinger K2AV <[hidden email]>
To: John Saxon <[hidden email]>
Cc: Elecraft Reflector <[hidden email]>
Sent: Friday, March 17, 2017 4:19 PM
Subject: Re: [Elecraft] OT: RFI problem on 80,40 with AT&T Uverse

I had this problem in spades especially 160. In the end, after some number of repairs to AT&T cabling, etc, the replacement of a 2Wire 3800 gateway box with a 3801 killed it dead.

IF you have a 3800, it will need to be replaced, although the sudden appearance seems to sound like something suddenly gone wrong. Make sure all the little telephone plugs get exercised to clean them up and see if it "suddenly" goes away.

In any event back in 2011 I was involved in a very careful staged repair, item by item to see what items made any difference. From my situation and about a dozen parallel similar extended careful replacement exercises, AT&T seems to have it solved and the solution is in their "book".

So just let them do their thing.

73 and good luck,

Guy K2AV

______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [hidden email]

NK7Z

Re: OT: RFI problem on 80,40 with AT&T Uverse

In reply to this post by Elecraft mailing list

Begin a notebook today! Keep track of everything you do and say, be
kind, and always get the name of people you talk to. Keep track of the
bands frequencies, times, signal levels etc in that notebook. You may
need the information later in the event you contact the ARRL/FCC for
further action if needed.

If you have access to a cheap SDR dongle radio see:
www.nk7z.net
for an article on how to document your RFI in a fully repeatable way.

73s and thanks,
Dave
NK7Z
http://www.nk7z.net

On 03/17/2017 12:37 PM, John Saxon via Elecraft wrote:

Jim Brown-10

Re: OT: RFI problem on 80,40 with AT&T Uverse

In reply to this post by Elecraft mailing list

All of this makes sense, but the modem may also contributing through
poor circuit board layout. That's an important part of the difference
between models of modems. And, of course, shielding.

In the olden days, all telco wiring WAS twisted pair, but far too much
parallel conductor cable has come into the system. CAT5 and other cable
for wired Ethernet is VERY VERY good at minimizing leakage of the
differential signal from wiring, and pickup on that wiring to the
differential pair. That's because it is VERY high quality twisted pairs,
with many more turns per inch than traditional land line twisted pair.

So -- one of my primary recommendations for RFI to/from anything telco,
including DSL, is to have telco provide CAT5 or better for the last
1,000 ft or so of the run, and for a greater distance if possible. Note
that you may also be hearing your neighbors modems and leakage from
their wiring. My second primary recommendation is to apply very good
common mode chokes to every cable connected to the modem and to the
telco wiring itself.

Most of this and a lot more is documented in
http://k9yc.com/KillingReceiveNoise.pdf

Two other points -- you've already done the right thing by complaining
to AT&T, but don't stop there. Contact ARRL's RFI group and get their
help in dealing with AT&T. And as others have noted, keep careful notes
of all of your contacts with AT&T.

73, Jim K9YC

On Fri,3/17/2017 12:37 PM, John Saxon via Elecraft wrote:
> If I am reading it correctly, they are saying that the bands that Uverse uses for multiplexing includes 160,80 & 40 frequencies. One of the contributors said that AT&T eventually upgraded his equipment, including replacing some twisted-pair cables with CAT5 cables, and it solved the problem.

______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [hidden email]