[time-nuts] PM-to-AM noise conversion

[John Miles]

> Yeah, that was totally it:
> http://www.thegleam.com/ke5fx/spur_demo.gif
>
> The spur amplitude accuracy is at its best in the red trace, just
> before the LNA starts to distort.
>

Correction, yellow is closer to the SA reference plot; I forgot to load the
latest plot at first.

-- john, KE5FX