|[AMRadio] AM - characteristics|
wa3vjb at yahoo.com
Fri Apr 6 04:58:47 EDT 2007
Don K4KYV said -- Controlled carrier AM reduces the
duty cycle demand on the amplifier.
Of course this is true, but attention needs to be paid
to the loss of carrier's value as part of the
wholesome AM experience.
The carrier is an essential part of AM, providing a
great deal of information in a function overlooked by
proponents of incomplete modes like SSB.
The carrier provides a form of conversational
punctuation, alerting those listening to the
transmission that the person continues to form a
thought which is about to be expressed.
The carrier also provides technical cues contained in
a wholesome AM signal, best interpreted on receivers
with a slow AGC, and often described as "quieting" on
such a signal.
Reducing the carrier often shortchanges the listener,
and therefore is not recommended.
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