From: utzoo!decvax!harpo!npoiv!alice!danny
Newsgroups: net.ham-radio
Title: Re: Thoughts on CW
Article-I.D.: alice.1213
Posted: Mon Nov 29 11:02:36 1982
Received: Tue Nov 30 02:41:55 1982
References: sri-unix.4329 brl-bmd.453

Yes, there is a theoretical reason why increasing the rate at which
a "pure" RF carrier is turned on and off MUST increase its bandwidth.
The branch of mathematics/engineering which makes this clear is
Fourier analysis.