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From: BRUCE@ccavax.camb.com (Barton F. Bruce)
Newsgroups: comp.dcom.telecom
Subject: Re: Ramparts Magazine Article: Still a Threat?
Message-ID: <13039@accuvax.nwu.edu>
Date: 4 Oct 90 07:42:45 GMT
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X-Telecom-Digest: Volume 10, Issue 712, Message 6 of 6


In article <12764@accuvax.nwu.edu> optilink!cramer@uunet.uu.net
(Clayton Cramer) writes:

>>In article <12711@accuvax.nwu.edu>, djcl@contact.uucp (woody) writes:

>>> * {Ramparts Magazine} printed instructions on how to build a "mute
>>> box" (something to suppress call supervision on incoming long distance

The article Ramparts printed was a rather poor circuit for a
traditional 'black box'. The 'black box' (as opposed to the 'blue' or
'red' boxes - each color cheating in some different way) was a VERY
simple sort of thing.

Rampart's circuit was a really stupid one that would give very low
voice volume. The better circuits used a resistor (or better an
inductor), a cap, a switch, and a battery, while their circuit simply
used a resistor and a switch.

People with subscriptions got their copies. Is that issue a
collector's item worth much of anything?