Gents:
If I understand what is being said correctly, you are describing a different
way of modulating an AM carrier which in appearance sounds like it would look
more like am FM carrier on an analog meter.
The old school way of running the carrier at 25%, and then allowing modulation
to swing up to the 100% level at full power is what I learned as a young ham.
I am guessing that the new technology allows the same goals to be accomplished
without the need for all of the "heavy iron", ie modulation transformers needed
back in the day.
Stepping back into history a moment, I think of the massive size of the iron
required to run the much fabled and storied WLW 500 KW system back in it's
heyday. I am lucky to live about a half an hour from Mason, Ohio, and can
recall well what the nearby Voice of America site with its now gone 625 acre
antenna farm with Rhombics galore looked like.
So, if WLW ran the "old school" way of modulation, and had at one time an
actual 500 KW carrier, would their meters have stood at 500 kw steady, or hung
around 125 KW with 0 modulation and then swung up to 500 from there?
I was under the impression they ran a full 500 KW carrier. Wrapping one's mind
around a constant carrier at 100 or 200 KW is a bit mind blowing, never mind
500 KW compared to what we as hams are used to.
For those here who may have not read up on the history of WLW, there is a great
amount of reading here on the 'net. It is said that WLW was used to relay coded
messages to our troops abroad during WW2. I also understand that Hitler himself
referenced it during one of his many radio addresses, and had no kind words to
say about how it was helping out countries efforts to defeat him!
I find that pretty darned fascinating!!!!!!!!
Don N8ECH
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