[Elecraft] P3 for other uses

[Merv Schweigert]

Has anyone used the P3 for an "external" signal finding or noise
finding tool?
I was wondering if a tuned circuit for 1.8 mhz fed into the input
with the IF set for 1.8 would be enough to show any signal?

I need to locate a signal on 160 meters that is caused by two BC
stations mixing due to a connection being made when the wind
blows and something contacts and creates a "diode" in my antenna/ground 
system.

Thanks  73 Merv K9FD/KH6