Does what it claims - and very nicely constructed as well.
Brilliant product. Does what it claims ... I'd been struggling to pull in a distant transmitter whilst living in the shadow of a large hill (which, unhelpfully, had a couple of phone masts nearby). Using an aerial which claimed to be 4G filtered and a masthead amp (also 4G filtered) produced a signal of adequate strength - but wildly varying quality (high bit-error rates) - adding this 5G filter in line (before the masthead amp) cured the problem and now I have a reasonably strong but high 'quality' signal.