I can agree with Chavdar..
I use directional array using 3 LZ1AQ preamps ( home brew using 5551¡¯s) Chavdar design phasing array.
YOU MUST use very good cm choke..I use design on LZ1aq website..or noise from mains power etc, upsets everything
It worked in LONDON, noise etc virtually removed.
Now in Devon its a very good antenna array..
I used crossed parallel loops, now here in Devon will be investing in 3 new Chavdar commercial preamps to be able to use verticals ( noise floor here on 40m full size vertical 1/4w is s0, where as in London s7-9.) once Wife releases cash. Lol.
Now I can here in Rural Devon utilise a vertical rx array, no point in urban land..
Maybe try loop?? ( high noise floor, vertical not so good.) Search LZ1aq website for crossed parallel loops.
With a loop you can null out offending interference maybe?? Impossible with a vertical.
Just saying, have a rethink?
Simon g0zen
