From: sigcom1 <sigcom@...>
Subject: [amecoac1] Re: Possible "new" transmitter in the works
To: amecoac1@yahoogroups.com
Date: Wednesday, July 8, 2009, 3:50 PM

I agree wholeheartedly.

I guess I should've said that I wasn't surprised that it was clean, just surprised that it met current FCC requirements which, at -43dBc, are quite stringent. At least, compared to the "Good Old Days" :-).

73.......Steve Smith WB6TNL

--- In amecoac1@yahoogroup s.com, David Richards <wb8rav@...> wrote:
>
> This should not be a surprise.
> The tube-type transmitters of all types tend to relatively "clean" in terms of spectral purity in comparison to solid-state oriented equipment, which are much more prone to produce IM distortion products and unwanted spurious harmonics. This is part of the elegant beauty of tube circuitry; simple circuit topologies perform very well.
> Solid state R.F.(and audio) circuitry tends to extensive & complex flltering (and/or extensive feedback, which tends to cause other problems) to produce even minimally acceptable results.