Google "ampliphase" ... OKA: "The Transmitter all broadcast engineers
hate." All linear phase modulation until AM magically squirts out the top.
Factoid: When WWV was brand new, it transmitted farm reports for the
Agriculture Department ... using Morse code. I'm guessing the number of
farmers fluent in Morse might have been two ... three tops. I remember
WWV using Morse, but by then it was Eastern Standard Time, not farm reports.
Fred K6DGW
Sparks NV DM09dn
Washoe County
--Northern California Contest Club
--CU in the Cal QSO Party
--7-8 Oct 2017On 12/23/2016 2:39 PM, K9MA wrote:
Very interesting, Fred. It makes sense, though, that plate modulated
class-C amplifiers aren't terribly linear. On the other hand, that
kind of distortion probably doesn't affect WWV's mission.
I wonder if the AM broadcast industry achieves lower distortion.
Feedback comes to mind.
73,
Scott K9MA
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