Hi John,
I think that the difference you noticed is caused by phase-noise of the PLL!
Not many manufacturers list the phase-noise value, but a radio with good IP3
performance can be severely degraded by that.
Needless to mention that TT-radio's are known to have good phase-noise
performance ;)
73, Dick/PA2DWH
-----Oorspronkelijk bericht-----
Van: tentec-bounces@contesting.com
[mailto:tentec-bounces@contesting.com]Namens John Rippey
Verzonden: vrijdag 7 maart 2003 4:58
Aan: tentec@contesting.com
Onderwerp: [TenTec] CW Contests and IP3
The ARRL lab's IP3 data for the Argonaut V and the Yaesu FT-920 show the
latter's IP3 superior by a wide margin. Yet listening on several CW contest
weekends yielded the finding that the Argonaut receiver's front end did not
collapse under the multiple strong signal environment, while the FT-920's
did. This is not to say that the Argo was perfect, but it was useable even
in the face of the racket. I must have been hallucinating; after all, you
can't argue with numbers.
73,
John, W3ULS
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