Ford Peterson <ford@cmgate.com> wrote :
> I've been following this thread and took a look at Dallas Lankford's
> article. It looks interesting. And although "...he seems to be very
> meticulous and conservative," he also boast of the magical 2N5109 preamp
> as
> having an IP2 of +80dBm to +100dBm based on single versus P-P design (top of
> page 7). I can absolutely, positively, beyond any reasonable doubt, assert
> that this is an absolute impossibility. That's so fantastic I had to
> re-read it an actually ponder how big a signal that really is...
> 1W is +30dBm
> 1KW is +60dBm
> 1MW is +90dBm
> I can absolutely assert that anything looking like a 'circuit' in the signal
> path of 10 MegaWatts of RF will absolutely vaporize in a spectacular blue
> flame instantly.
Intercept Point values represent no real physical power.
They are rather arbitrary numbers calculated from distortion
measurement results. It is, therefore, perfectly possible to have
such a large numbers with low distortion, low power circuits.
73,
Sinisa YT1NT, VE3EA
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