[1000mp] FTV1000 Premp 2 overload.

[Tech]

Hi all
Happy New Year.

For some reason a nearby FM station cross modulates the RF Amp 2 which are a 
pair of  MOSFETs

The quad fet preamp one is fine.

Any clues as to how to prevent this and why it occurs on the IG MOSFET pair?

They are SGM20's 16Am's

All the book says is

PREA 1 VG NF GOOD IMD

PREA2 GOOD NF VG IMD.

When in fact it seems to be the reverse.

maybe a trap would help if I really have to.

Steve VK3SIX