By the way, did you check the "A High-Dynamic-Range MF/HF Receiver
front end " by Jacob Makhinson N6NWP (QST February 1993 p. 23-28, with
corrections in June 1993 p. 73) ?

It contains push-pull preamplifier designs with feedback with nearly
+33 dBm input IP3 and gain compression starting around S9+80 dB.

Paul OH3LWR


The mixer section is what is REALLY impressive about that front end.
There was another article (also in the handbook) about a similar mixer
that used a siliconix quad dmos fet that was even better.