[Elecraft] Hearing CW - Fundamental Keying Waveform?

[Mike S]

At 09:13 AM 9/20/2006, Martin Gillen wrote...

>Which FCC or ARRL guideline mentions chirp, or otherwise attempts to
>regulate the keying waveform?

97.307(a) No amateur station transmission shall occupy more bandwidth than necessary for the information rate and emission type being transmitted, in accordance with good amateur practice. 

(b) Emissions resulting from modulation must be confined to the band or segment available to the control operator. Emissions outside the necessary bandwidth must not cause splatter or keyclick interference to operations on adjacent frequencies. 

(c) All spurious emissions from a station transmitter must be reduced to the greatest extent practicable. If any spurious emission, including chassis or power line radiation, causes harmful interference to the reception of another radio station, the licensee of the interfering amateur station is required to take steps to eliminate the interference, in accordance with good engineering practice.

And it continues on with regard to specific standards and measurements of spurious emissions.