[Elecraft] Noise gen / Spectrogram--who invented?

[Steven Gibbs]

Tom Hammond wrote:
> I was NOT the one to find and 
> suggest the use of Spectrogram... 

>   In September of 1999, Alan Childress, KM4DT, first brought our
>   attention to the freeware program Spectrogram, and he first
>   mentioned its use in aligning the K2's CW filters. Because it
>   was such a radical concept,

Yes, thanks Tom for setting out the facts, and our thanks to KM4DT.

Do Elecraft listers know of earlier mention of this technique in
the amateur or professional literature?

If not, then KM4DT deserves an even BIGGER accolade.  In any case,
many will acknowledge that making filter & BFO adjustent so
straightforward has contributed greatly to the K2's success.

73, Steve GU3MBS.