Randy, W5ZJ, has given me some good advice about Pennant antennas and even sent me some ferrite binocular cores for matching transformers.  I'm in the process of figuring out how to orient the trial Pennant.  I thought my noise sources were mainly from N to E but weather kept me from getting out and doing much snooping.

I rotated the yagis and then went out today with an FT-817 (handheld HF rig) and a 20M antenna.  I walked all around listening on 20 with good sensitivity and 80 with poor sensitivity because of the 20M antenna.  I verified what I was seeing on my yagis - the main noise source is to the South.  There is a house back there, about 700 feet away.   The poles and transformers to the N and E are quiet.  I didn't walk right up to the houses they are associated with, but those seem quiet also. 

The noise to the S has that raspy, pulsing noise I usually associate with power line noise or some kind of arc.  I know the noise is strong on HF and 6M but I'm limited on checking on 80 and 160.  I could attach something to the FT-817 that would be better on 80 but I think the source to the South is a broadband noise signal. 

The other hot spot is my electric meter, but I only detect noise when the 817's antenna is within a few inches. 

I also have a TinySA spectrum analyzer, which is a truly remarkable instrument for the size and price, but it doesn't seem to be sensitive enough for outside checking.  I can hold it up to a computer or router or wall wart and see the spurious emissions clearly but this is with the little antenna just inches away.  I haven't begun to analyze things associated with my house yet, but I will get to that.  I have a lot of FT-240-31's and I'm sure some will be needed. 

My inclination now is to put the Pennant with its null to the South.  It should cover EU and AS that way and I could get an idea how it works.  I may try to make it reversible but I want to keep it simple for now. 

73,

Dennis/RZ