Stumpy wrote in news:d5mdnfYwYPRW_CnOnZ2dnUVZ snipped-for-privacy@earthlink.com:
Google for "Biquad". It uses a flat reflector. Almost every conductor will do for the reflector. Wonder if you 'd perceive any difference but by expensive instruments. (Difference between Ag and Al I mean.) Simple copper clad PCB-material is used most often.
That elcheapo USB sticks often perform well but if not, they become the source of nightmares. (No need to say I don't like them.) Nevertheless I was succesfull last week by using a USB extension cable and finding a good place to hang the dongle.
petrus bitbyter