Amazing - Email Client removed all paragraphs - here is another try - fingers
crossed. ----- Original Message -----
> I have seen nothing on this reflector about carriers every 4 khz from
> Centurylink ADSL2 systems . (or any other system) Here is my short
> version of about 75 days with Clink. A year ago Clink finally reduced
> the carriers on 160 from almost S9 (-73 dBm) out of noise to about my
> noise level (-100--105dBm) .Took an Engineer from Clink in Denver
> turning off customers from Denver while I watched the comb to
> absolutely identify the customer modem source.Then it took over a
> month for him to even find someone in Phoenix to address the issue.
> Clink tech did everything under the sun except address that customer -
> then two weeks later they sent out same tech along with another tech
> who was a Ham and had some idea of what a RF Carrier was. Again they
> addressed evertthing from the DSLAM to my house with no effect (EVEN
> though they knew the customer who had been identified by Denver) .
> FInally I got them to walk the alley with me and my 160 portable DF
> rx. The Ham pulled out a MFJ VHF noise receiver and we walked the
> alley They contended the problem was APS .. Nope ,its carriers guys ,
> not noise.( I had P3 spectrum plots showing the carriers every 4 khz -
> did not mean anything to them- and after every change I woudl go back
> and run and print another plot ) I showed them (they could listen to
> the speaker on my Rx.) how loud the carriers got 100 feet or so either
> side of that identified customer. The original tech left and the Ham
> stayed with me . I took the ferrite rod/jfet source follower DFing
> assy I have off the R10 rx and just put the little rubber ducky whip
> on it and asked him to go probe in his access taps and see how loud
> the carriers were there . He did so and admitted .Yep its in our
> system. The original tech came back and they identified numerous
> problems - among which was an open pair to that customer which was
> forcing that modem to run wide open (100 mw per carrier) . Interesting
> that the Clink Engineer told me they had 3 other customers within abou
> t 400 feet who either had no VDSL or drastically reduced internet
> speeds.
> Anyhow they found a tap that had leaked and said everything was so
> corroded they were reluctant to do any work there and a crew would
> have to come ot and re do the whole thing They did replace the
> customer drop with a new "improved bonded and shielded pair " and were
> able to find a pair to replace the open. This got the carriers to just
> at my noise level - and they said since te customer was not at home -
> they would have to contact him to check it (I doubt they ever did as
> the carriers never changed - and virtually every half hour their
> supervisor was calling asking why it was taking so long , this was
> costing Clink money- and they could not afford to be worrying about
> this stuff !!!!! )
> Well about a year passed - here come a bunch of trucks and they ran a
> second cable - then about a month later a guy comes and puts new
> access taps on the new cable , and a week or so later they moved some
> customers to the new taps -BUT left the old wires just hnaging - in
> fcat the hoiuse behind me they just took the junction box off the wall
> , threw it over the fence into alley with wires to the old cable still
> in place !!!! iIts still hanging there ) Other places they just cut
> off the cable and left it hanging down in the breeze. SOOOOO now I
> have carriers on 40 meters 7 to 15 dB out of my noise -100--105 dBM on
> 40) , on 160 5 to 7 dB out of my noise and about at noise on 80 . I
> actually see two carriers on 40 about 44 hz apart probably fromtwo
> different modems. 40M RX ant is M2 40M1L at 50 feet -- I can null the
> carriers down to noise off end (perpendicular to phone cable)
> I have talked to W0IVJ , I have talked with Mike Gruber of ARRL and
> both say they have not seen these carriers and I am the only one
> reporting them !!!!!!!!! Curious - anyone else seeing this stuff ?? Or
> am i just Lucky Pierre ? Hank K7HP
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