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From: aiz@JPL-VLSI.ARPA
Newsgroups: net.ham-radio
Subject: Blown Modem
Message-ID: <1001@brl-tgr.ARPA>
Date: Mon, 26-Aug-85 12:57:50 EDT
Article-I.D.: brl-tgr.1001
Posted: Mon Aug 26 12:57:50 1985
Date-Received: Wed, 28-Aug-85 20:09:20 EDT
Sender: news@brl-tgr.ARPA
Lines: 16


While tuning up on 40 meters last night, my electronic phone started making
funny noises.  When I tried to use the phone, it was dead.  I "fixed" the
phone by discharging all the capacitors (big tantalums) and plugging the
phone back into the phone line.  The phone worked fine.  The phone is
phone line powered and I think that the bridge on the input to extract
the battery was rectifying RF and did strange things to bias circuits
in an inoperable way.  I seem to have solved the problem with a .005 uf
cap across the tip and ring.

My US Robotics Password Modem, however, also appears to have died; apparently
from the same cause.  

Has anyone experienced similar problems from "RFI"?

Art Zygielbaum, WA6SAL