wrote in message
oups.com...
http://www.getboost.com/dz/sienna.htm

73 de Jim, N2EY


Hello, Jim

Well, how about a kit in the $100.00 range ..... with opposite sideband
rejection in excess of 50 dB. Even a few hundred Hz away from the carrier?
Direct conversion. With selectable sideband. Hmmmm ....

Of course, it is a receiver. They do make an exciter. But the thought of a
phasing direct conversion receiver or phasing transmitter with sideband
suppression of that order is interesting. Especially since the lower audio
frequencies will also be highly suppressed.

I've got the QSTs referenced. All in the 1990s. Of course, they've
replaced the analog audio quadrature generation with DSP to obtain the
increase from 40 to 50+ dB suppression of the unwanted sideband.

Here is a URL:
http://www.wwc.edu/~frohro/R2_DSP/R2-DSP.html

Nothing like DSP.


73 from Rochester, NY
Jim AA2QA