-- 
Have Fun,

Brooke Clarke
https://www.PRC68.com
axioms:
1. The extent to which you can fix or improve something will be limited by how well you understand how it works.
2. Everybody, with no exceptions, holds false beliefs.

Date: Wed, 4 Oct 2023 17:23:58 -0400
From: Brian Harrison <[email protected]>
To: milsurplus listserv <[email protected]>
Subject: Re: [Milsurplus] Wire tapping NVA comms Vietnam ?
Message-ID: <[email protected]>
Content-Type: text/plain; charset="utf-8"

Hue,

Yes

Here?s some info from page 99 of the book ?The Most Secret War: Army Signals Intelligence in Vietnam?

best,
brian
kn4r

One of the major problems faced by wiretap teams was that the VC/NVA units would daily send runners along the lines to check them. Two ASA engineers working at Vint Hill Farms Station came up with the LEFT TWIST system where a transmitter in the form of a pole was dropped from a helicopter. Actual results in the field in 1971 proved mixed, and future trials were cut short when the course of the war began to change. The drawdown of US combat forces led to fewer deployment opportunities for landline intercept and even- tually brought an end to the mission altogeth- er. Time had finally run out on ASA?s landline mission. However, lingering questions remained as to why lessons learned as far back as 1966 were continually ignored. The technological advances in the CIRCUS ACT program were achieved at a high cost giventhe numbers of casualties suffered by the installation teams and the limited amount of usable intelligence extracted.