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Re: LF: PSK31 generation

from [Andre Kesteloot] [Permanent Link][Original]
To: rsgb_lf_group@blacksheep.org
Subject: Re: LF: PSK31 generation
From: "Andre Kesteloot" <andre.kesteloot@ieee.org>
Date: Tue, 29 Jan 2002 12:55:34 -0500
References: <5.1.0.14.0.20020128115929.00ab3b90@gemini.herts.ac.uk> <5.1.0.14.0.20020129144512.02f80bf0@gemini.herts.ac.uk>
Reply-to: rsgb_lf_group@blacksheep.org
Sender: <majordom@post.thorcom.com> 
James Moritz wrote:


 if the drive to only one
of the totem poles was varied in phase, changing the output amplitude would
also change the output phase, introducing up to 90 degrees unwanted
additional phase modulation into the signal.

interestingly, changing the phase to produce amplitude modulation was the
approach RCA followed in the 1960's with their "ampliphase" AM medium-wave and
short-wave transmitters

73
André N4ICK
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