[AMRadio] Power Levels

[Bob Bruhns]

Hi John,

Sure, go ahead and post it, it's public domain.  Just give
me credit, so I can put it on the old resume.  Maybe I can
get a job running Worldcom or something.

  Bacon, WA3WDR


----- Original Message -----
From: "John E. Coleman" <colemanj at sbcglobal.net>
To: <amradio at mailman.qth.net>
Sent: Sunday, June 30, 2002 4:48 PM
Subject: RE: [AMRadio] Power Levels


> I love it Bacon:
> As usual, you have said all well.
> May I post this as well on my Web site?
> I have some other writing that I have done myself with
some
> drawing that I might send to you for editing if you feel
up to it.
>
> 73, John, WA5BXO
>
>
> -----Original Message-----
> From: amradio-admin at mailman.qth.net
> [mailto:amradio-admin at mailman.qth.net] On Behalf Of Bob
Bruhns
> Sent: Sunday, June 30, 2002 3:19 PM
> To: amradio at mailman.qth.net
> Subject: Re: [AMRadio] Power Levels
>
> Hi Dave,
>
> Classical AM has a carrier, an upper sideband and a lower
> sideband.  However, the power is not distributed 1:1:1
> A few good references:
>
> The older ARRL Handbook issues, maybe 1981 and back
>
> Radio Engineers Handbook, by Frederick Terman, McGraw-Hill
> 1943
>
> The Mechaics of Modulation" by Paul R. Huntsinger, October
> 1931 QST, with a missing figure or to appearing in
> Corrections, QST, November 1931 (page 34).
>
> "Lop Sided Speech and Modulation" by George Grammer,
> February, 1940 QST
>
> "A Course in Radio Fundamentals" by George Grammer (Part
6 -
> Modulation, QST November, 1942)
>
> Also look over anything you can find by John. R. Costas,
> W2CRR.  (I don't know whether he is still living, so his
> callsign may be reissued by now.)  Also look for Norgaard.
> These guys were pioneers in sideband, and they were
fooling
> with DSB with and without carrier.  Costas is also famous
> for the Costas-loop, used in Phase Locked Loops to this
day.
>
> Bacon, WA3WDR
>
>
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