On 7/16/2012 10:36 PM, W2RU - Bud Hippisley wrote: > Herb (& others) — > > I struggled to keep my 160- and 80-meter RF out of my DSL equipment for a > number of years. Multiple turns of all cables in/out of the DSL modem > (Siemens Speedstream) on #31ferrites, etc. The best progress occurred when I > wrapped the modem in common kitchen aluminum foil and very carefully attached > a ground wire to the foil. (Use very big flat washers on both sides of the > foil!) But I still experienced occasional disconnects. > > This past year my telco started supplying Westell Model 7500 DSL modems to > new customers and my favorite telco tech saw that I got one, too. I haven't > observed a single DSL outage since then. And I haven't even wrapped it in > aluminum foil! > > Other things that will help: > * If you can do it, relocate your incoming telephone line and/or your > 160-meter antenna (and its radial field) for greater separation of the two or > for altered orientation between the two. > * Get your 160 (and perhaps 80) antenna farther from both the outdoor > telco line and the indoor telco lines (i.e., your house). > > Bud, W2RU > > On Jul 16, 2012, at 9:34 PM, KL7RA wrote: > >> I solved this exact problem by blowing up the DSL modem on 160 and >> ACS came out with a new one they said was more RFI proof and it was. >> Westell is on the factory logo. > _______________________________________________ > UR RST IS ... ... ..9 QSB QSB - hw? BK
Thanks to all who responded with suggestions. It is interesting that nobody suggested the K-Com or K-Y filters. I looked up the Westell 7500 and see that it is a modem router with no provision for a telephone like my present DSL modem has (Zhone). My modem is a simple pass through unit that separates the telephone service from the internet and provides me a single RJ-45 that goes to my router. I am left with putting ferrite cores on the power cable from the wall wart and I will also plug my lap top directly into the unit to see if the 60 foot CAT 5 cable going to the router being removed has any effect. Then I guess the aluminum foil shielding or even building an aluminum enclosure with all leads filtered may be what I have to do. I will also ask the DSL provider if they have any newer modems. Thanks again for you help on this problem. Herb Schoenbohm, KV4FZ _______________________________________________ UR RST IS ... ... ..9 QSB QSB - hw? BK