Article View: sci.electronics
Article #3096Re: RFI on telephone
From: Strawberry Jammer
Date: Mon, 18 Sep 1989 15:36
Date: Mon, 18 Sep 1989 15:36
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In article <13681@well.UUCP> nagle@well.UUCP (John Nagle) writes:
}
} I've been receiving two local AM broadcast stations on my
}Western Electric Model 600 telephone. I fixed the problem by
}putting a 1000pF capacitor across two terminals within the phone
}that seemed to work. (Putting it across the phone line didn't help,
}in fact, a dead short across the phone line turned the phone into a
}good radio!) This seems a hokey solution to the problem. Is there
}a more respectable one?
Considering that the problem comes from audio level setting diodes within the
telephone set itself I would hardly call your solution "hokey". The only
"hokey" thing about it is a manufacturer who blithely assumes that RFI is
rare just because it was 50 years ago!
So long as the fix and the phone work I would just go on using it! You might
try ferrite beads on the wires to the phone as well if the capacitor isn't
enough too.
*Mike Waters AA4MW/7 waters@dover.sps.mot.com *
Take it easy, we're in a hurry.
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!cs.utexas.edu!oakhill!dover!darla!waters From: waters@darla.sps.mot.com (Strawberry Jammer) Newsgroups: sci.electronics,rec.ham-radio Subject: Re: RFI on telephone Keywords: RFI radio telephone Message-ID: <1870@dover.sps.mot.com> Date: 18 Sep 89 15:36:23 GMT References: <13681@well.UUCP> Sender: news@dover.sps.mot.com Reply-To: waters@darla.sps.mot.com (Strawberry Jammer) Distribution: sci Organization: Hacker's haven Lines: 22