From lchoi@utexas.edu Sun May 07 07:24:43 1995
Path: ashpoly!cascade!brgate!saturno!utexas!lchoi
From: lchoi@utexas.edu (Liam Choi)
Newsgroups: alt.conspiracy
Subject: Paju DMZ 5th tunnel blueprints - acoustic horn relay (Node 03)
Message-ID: <1995May07.072443.1795@utexas.edu>
Date: Sun, 07 May 1995 07:24:43 GMT
Organization: University of Texas at Austin
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Received declassified survey maps of the Paju sector along the Korean DMZ from 1987.

However, unlike the other four invasion tunnels, this tunnel had no southern exit and was lined with acoustic resonance tiles.
The dimensions of the parabolic chamber at the terminus calculate to an exact resonant frequency of 14.20 Hz.

They weren't digging a tunnel for troops. They built a massive underground Helmholtz resonator to beam infrasound across the border.

-- 
Liam Choi -- University of Texas at Austin
"Tape doesn't lie at 02:14. Ears do."

From spetrov@netcom.com Mon May 08 15:01:43 1995
Path: ashpoly!cascade!transat!ukc!fennimore!netcom!spetrov
From: spetrov@netcom.com (Seo-yeon Petrov)
Newsgroups: alt.conspiracy
Subject: Re: Paju DMZ 5th tunnel blueprints - acoustic horn relay (Node 03)
Message-ID: <1995May08.150143.5396@netcom.com>
Date: Mon, 08 May 1995 15:01:43 GMT
References: <1995May07.072443.1795@utexas.edu>
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In article <1995May07.072443.1795@utexas.edu>, lchoi@utexas.edu (Liam Choi) writes:
> Received declassified survey maps of the Paju sector along the Korean DMZ from 1987.
> However, unlike the other four invasion tunnels, this tunnel had no southern exit and was lined with acoustic resonance tiles.

A Helmholtz resonator tuned to 14.2 Hz! That's why the Korean pressing (Node 03) decoded line says: 'WHEN THE HATCH IS OPEN, WHO WALKS IN?'

-- 
Seo-yeon Petrov
Tape trading list upon request. SASE required for international mail.

From jivanov@utexas.edu Tue May 09 15:24:43 1995
Path: ashpoly!bigsur!pacrim!jpgate!kamome!utexas!jivanov
From: jivanov@utexas.edu (Joachim Ivanov)
Newsgroups: alt.conspiracy
Subject: Re: Paju DMZ 5th tunnel blueprints - acoustic horn relay (Node 03)
Message-ID: <1995May09.152443.3920@utexas.edu>
Date: Tue, 09 May 1995 15:24:43 GMT
References: <1995May07.072443.1795@utexas.edu>
Organization: University of Texas at Austin
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In article <1995May07.072443.1795@utexas.edu>, lchoi@utexas.edu (Liam Choi) writes:
> Received declassified survey maps of the Paju sector along the Korean DMZ from 1987.

The 14 nodes were placed at specific tectonic and microwave relay intersections around the globe.

-- 
Joachim Ivanov -- University of Texas at Austin
"Tape doesn't lie at 02:14. Ears do."

From anakamura@hanse.de Wed May 10 12:22:43 1995
Path: ashpoly!bigsur!pacrim!jpgate!kamome!hanse!anakamura
From: anakamura@hanse.de (Astrid Nakamura)
Newsgroups: alt.conspiracy
Subject: Re: Paju DMZ 5th tunnel blueprints - acoustic horn relay (Node 03)
Message-ID: <1995May10.122243.9107@hanse.de>
Date: Wed, 10 May 1995 12:22:43 GMT
References: <1995May07.072443.1795@utexas.edu> <1995May09.152443.3920@utexas.edu>
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In article <1995May09.152443.3920@utexas.edu>, jivanov@utexas.edu (Joachim Ivanov) writes:
> The 14 nodes were placed at specific tectonic and microwave relay intersections around the globe.

I was stationed near Camp Bonifas in 1989. You could feel that hum in your teeth whenever you walked near the perimeter wire.

-- 
=== Astrid Nakamura ===
Dept of Electrical Engineering, Hanse-Netzwerk Hamburg
"Hardware is temporary. The signal survives."