Topband: Topband Digest, Vol 145, Issue 5

[Greg Chartrand via Topband]

Looking for 160m narrow beam RX advice (Lloyd Berg - N9LB)
 I had a similar situation about 15 years ago with my next door neighbor who had something in his house that was giving me S9 raspy noise 24x7. I could not find the source in his house but I suspected  his doorbell transformer that was buried inside a wall of his house. The noise precluded all DX on 160 not to mention everything else. 
I purchased an MFJ-1026 and had a sense antenna directly between my vertical (receiving antenna) and his house. I was able to completely null out the noise from his house right down to atmospherics. I worked a lot of DX using the 1026 and about 4 years later the noise went away without explanation. 
You can put up flags, loops, pennants... whatever but none of them will have a null anywhere near what you can do with a 1026 and sense antenna .... assuming that the noise source appears as a single point. You can verify this using a portable AM radio and using the loop-stick antenna in it to null the noise. If it nulls well, the 1026 would be a good investment.  

Good luck!Greg