[R-390] AM Sensitivity Addenda

[Dallas Lankford]

There is a typo in my previous posting.  When referring to the signal
generator (NOT modulation) OFF/ON I wrote S+N1/N2 but then identified N1 and
N2 reversed.  N1 should have been receiver noise plus noise due to the
signal, and N2 should have been receiver noise alone.

Coincidentally, late last night I received an e-mail copy of John Wilson's
May 2002 Short Wave Magazine article, "Simply The Best?"  In the article
John has a detailed discussion of why it is incorrect to turn the signal
generator off and on, (or, equivalently, detune and retune the signal
generator or receiver) when measuring the 10 dB S+N/N ratio.  This would be
a nice article to have on someone's web site if SWM would approve.