>From: k6ll
>To: rfi
>Subject: Re: [RFI] Telephone RFI problem
To: <rfi@contesting.com>
>Date: Wednesday, February 11, 1998 7:21PM
>
>On Wed, 11 Feb 1998 10:15:43 -0500 "Randy Lake" <rlake@monad.net> writes:
>>Hi all......
>>During the NH qso party this past weekend
>>my next door neighbor,who's house is abt
>>200' from the tower, called because he needed
>>to make a call to his mothere and father. In
>>the past he has heard me just a little bit on the
>>phone but today he cud not hear anyone on
>>the phone but me....
>Run down to Radio Shack and buy yourself a model 43-591 phone
>for $19.95 (less if on sale). This phone is highly resistant
>to RFI. If it doesn't solve the problem, you can take
>it back to RS.
I have been in close contact with RS's telephone buyer over the years. In
order for them to accept a telephone as part of their line, it must pass
their vendor-qualification tests, which include RFI immunity! Although
their line seems to change from year to year, they always seem to have
immune telephones available, although the degree of immunity does appear to
vary from phone to phone.
If you want RFI-proof phones "guaranteed to cure RFI or your money back,"
contact TCE Labs or Pro Distributors:
73 from ARRL HQ,
Ed Hare, W1RFI
ARRL Lab
>From the ARRL TIS database:
ro Distributors
2811-B 74th St
Lubbock, TX 79423
USA
Phone: 800-658-2027
Products/Services: TELEPHONE-EMI RESISTANT TELEPHONE, APPEARS IN ARRL
HANDBOOK, FERRITE MATERIAL, EMI-EMI PRODUCT, FILTER-AC LINE FILTER,
FILTER-TELEPHONE EMI FILTER, TELEPHONE-TELEPHONE EMI FILTER
Notes: PRO Distributors telephones are guarantee to eliminate RFI or your
money back. Other items available include filters and filter kits for VCR,
TV, stereo, telephones and many other electonic devices.
Date of last change: March 19, 1996
TCE Labs
2365 Waterfront Park Drive
Canyon Lake, TX 78133
USA
Phone: 210-899-4575
Products/Services: APPEARS IN ARRL HANDBOOK, TELEPHONE-EMI RESISTANT
TELEPHONE, FILTER-TELEPHONE EMI FILTER, FILTER-COMMON MODE CHOKE, FILTER-AC
LINE FILTER, KIT-AMATEUR RADIO KIT
Notes: TCE Labs telephones are guaranteed to eliminate interference or your
money back.
Date of last change: July 12, 1995
>
>I keep a supply of these phones on hand (for emergency loan
>during contests). I always install one in my house during
>contest weekends. I usually put a large ferrite bead in the
>line as additional insurance. I snip off
>one of the modular plugs that comes with the 6' cord, wind as
>many turns as possible on a 1/2" ID, 1" long ferrite bead, and
>then reinstall a modular plug.
>
>I either:
>
>1. Loan them the phone for contest weekends, in response to complaints.
>(One guy never brought it back, but now he's too embarassed to
>complain any more about anything).
>
>2. Offer to split the cost of the phone.
>
>I always give them a copy of the FCC Interference Handbook, CIB-2,
>which clearly describes where the responsibility lies for solving
>telephone interference (at the telephone end of course).
>
>Dave Hachadorian, K6LL
>Yuma, AZ
>K6LL@juno.com
>
>
>
>
>
>
>_____________________________________________________________________
>You don't need to buy Internet access to use free Internet e-mail.
>Get completely free e-mail from Juno at http://www.juno.com
>Or call Juno at (800) 654-JUNO [654-5866]
>
>
>--
>Submissions: rfi@contesting.com
>Administrative requests: rfi-REQUEST@contesting.com
>WWW: http://www.contesting.com/rfi-faq.html
>Questions: owner-rfi@contesting.com
>
--
Submissions: rfi@contesting.com
Administrative requests: rfi-REQUEST@contesting.com
WWW: http://www.contesting.com/rfi-faq.html
Questions: owner-rfi@contesting.com
|