Remember Jeff to put a 2-3 inch toroid (type 31 I believe) ring wound
and populated with as many turns of telephone drop cord that will
snuggle right up to wall out and put the WESTEK filter between that and
the actual DSL with a short lead. My 160 meter vertical is about 60
feet from the telephone pole and slopes down mostly horizontally to the
house where the the telco fuse and arrestor are located. For the feeds
to telephone instruments past the modem elsewhere in your home you may
have to put RFI filters on those so the don't back feed into your modem
fugitive RF when you transmit.
Herb Schoenbohm, KV4FZ
On 1/16/2013 12:25 PM, Jeff Woods wrote:
*Clap clap clap*
Thanks, Herb. Just ordered one. I have the same problem, and have
attempted the solutions you describe below with respect to 160m
interference to our DSL modem.
My family will appreciate having internet during CQ160 this year.
-Jeff
W0ODS
------------------------------------------------------------------------
*From:* Herb Schoenbohm <herbs@vitelcom.net>
*To:* Topband <Topband@contesting.com>
*Sent:* Tuesday, January 15, 2013 1:13 PM
*Subject:* Topband: DSL TB IX Cured
I pass this information out to those who may have similar problems
with DSL crashing while operating on 160 meters. (The DSL service
uses frequencies very close to the 160 meter band for which some
sort of filtering is required.) Since so many different
circumstances of antenna/grounds/ house wiring and positioning of
the telephone drop wire can vary, it was hard to find a solution
to allow 160 meter operation to co-exist with a functioning DSL.
At my shack I have three internet services, two WI-Max and one DSL
via the telco company. For remote control operations via either
Icom's RS-BA1 or Remote Rig's unit for the TS-2000 the DSL is the
most reliable. The WI-MAX units have plenty of bandwidth but the
latency is not as good as the DSL which gives me the most superb
ability to run a CW paddle from the remote end thousands of miles
away with out the "drunken CW syndrome" that the WI-Max is known for.
The one major problem with the DSL is that every time I would key
on 160 the DSL would just shut down and loose connectivity
completely. I tried building filters, toroid wraps and even
shielded tel-co wiring but anything over 50 watts on 160 cause a
disconnection using the DSL service. I tried four different DSL
modems, still no improvement. Then Dan, K3ZXL suggested I try a
filter made by Westek Electronics, their type TC-Z100B1 telephone
DSL line filter, which I ordered right on line from their website
at www.westek.com.
The item cost only $8.50 with shipping cost of $5.95. After
installation all the interference which used to crash the
connection is gone. Shipping cost were $5.95. Now running a full
KW on 160 is possible after plugging this filter between the wall
jack and the DSL modem.
Regards,
Herb Schoenbohm, KV4FZ
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Topband Reflector
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Topband Reflector
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