Aaronia sells all kinds of RF blocking stuff... it's a German company which calls it electric smog....they make cool analyzers as well On Jul 7, 2016 3:12 PM, "Chuck McCown" <[email protected]> wrote:
> Metal screen, hardware cloth. The squares need to be 10% of the > wavelength to be a good blocker. > > *From:* Colin Stanners <[email protected]> > *Sent:* Thursday, July 07, 2016 3:09 PM > *To:* [email protected] > *Subject:* [AFMUG] RF blockage to make a ~350 degree omni (to prevent 450 > interference to WiMAX) > > We'd like to put up a 3.65 omni, but have seen certain cases of > interference between the 3.65 450 and PMP320 WIMAX, so need to "notch out" > the direction of a WIMAX tower. There's no existing antenna or mounting > structures to use as a shield, and at this site we need to be careful of > windload. I'd prefer not to use regular pieces of metal that could reflect > the signal and cause multipath. Is there some kind of outdoor-rated > attenuating material? >
