This isn't exactly a new topic, see April 1917 QST 
http://p1k.arrl.org/pubs_archive/2182 
73 
Frank 
W3LPL 
----- Original Message -----
From: "David Siddall" <hhamwv@gmail.com> 
To: "cq-contest" <cq-contest@contesting.com> 
Sent: Monday, June 14, 2021 3:50:57 PM 
Subject: [CQ-Contest] Cleaning Up Our Signals .. Eliminating Transmitted "Crud" 
In the CQ Contesting column I considered problems and solutions, with 
sources footnoted for more in-depth examination. More than five years later 
they remain relevant. With CQ Magazine's permission, the columns are 
available at the following link: 
https://tinyurl.com/c7pb27dy 
73, Dave K3ZJ 
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