[Elecraft] P3 Sprogs

[MØTDZ]

I am sure I have seen some threads on this before so please accept apologies If i am going over something twice. 

Having moved to an area with a  much lower noise level I note loads of sprogs / spurious signals following me around on the P3 panadapter.  Is there a common cause of these (im presuming they are generated by the K3S) and anything I should/could be doing to get rid of them?

Trevor 
MW0TDZ / M0DX