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From: dce@starfish.Convergent.COM (Dan Eykholt)
Newsgroups: sci.electronics
Subject: Re: Jamming walkmans
Message-ID: <331@starfish.Convergent.COM>
Date: Fri, 20-Nov-87 01:20:44 EST
Article-I.D.: starfish.331
Posted: Fri Nov 20 01:20:44 1987
Date-Received: Sun, 22-Nov-87 11:12:15 EST
References: <4149@utai.UUCP>
Organization: Convergent Technologies, San Jose, CA
Lines: 15
Keywords: jamming noise interference broadcast nasty Just say NO to RFI.

In article <4149@utai.UUCP>, cda@utai.UUCP (processor) writes:
> Okay, now I'm REALLY mad and I'm gonna do something
> (nasty) about it.  I have, once again, been stuck on
> a long train ride near a person who was blasting
> their walkman ...
>     I'd like to build a walkman jamming device for
> use on the train.  

Just purchase the "BOOM BOX JAMMER" TM  from your local connivance store.
Actualy it's just a simple 9 pound hammer.  Just distract your victim a little, 
then tap the box with 50gs or less, thus causing the tape/CD to jam.  
If you can not find this, pruchase a can of polyuerthane (sp) foam and seal the leaks. 

No I have never used this techique.  The .45 works better.  
Oh, of course you could just ask the offensive one to lower the volume.