Recently on a visit to Perth (Western Australia) I happend upon a Polisacn speed camera, installed in the rear of a Transit Van (generic description of van) on a dual laned highway.
I run dual M27 Extreme heads up front and a Bel STi Magnum, mounted low on the WS.
Both detector and jammers went ape sh.t at about 500m before the van, which had the camera facing oncoming traffic.
I carried out three runs at the van to distinguish which had the better range.
The Blinder Jammers came out ahead, not by much, but I was impressed by
the range/sensitivity of both units..
I now have a DOD GS600 camera mounted in my car to record such events.