[Top] [All Lists]

[RFI] Resolving RFI to a DSL Modem

To: rfi@contesting.com
Subject: [RFI] Resolving RFI to a DSL Modem
From: Kim Elmore <cw_de_n5op@sbcglobal.net>
Date: Sat, 21 Mar 2015 10:32:05 -0500
List-post: <rfi@contesting.com">mailto:rfi@contesting.com>
I have an ADSL modem in my garage and when I operate with anything more than 1300-1400 W on 40 m only, it loses the ADSL connection. I';; be getting an IPDSL modem on Monday, though not Uverse (because... Well, it's the phone company). I'm assuming I'll have a similar problem with it, if not worse. I've ordered five of the ~1.5" ID type 31 ferrite cores, enough for one per wire that enters or exits the device. How many turns should I pack on: as many as I can in a single layer? ANy guess if I can get away with enough turns when I run two wires per core?

There's a twisted pair that enters the modem, a power line, and four CAT-5 cables. DO I need to observe any special precautions?

Kim N5OP

Kim Elmore, Ph.D. (Adj. Assoc. Prof., OU School of Meteorology, CCM, PP SEL/MEL/Glider, N5OP, 2nd Class Radiotelegraph, GROL)

/"In theory there is no difference between theory and practice. But, in practice, there is." //– Attributed to many people; it’s so true that it doesn’t matter who said it./

RFI mailing list
<Prev in Thread] Current Thread [Next in Thread>