After seeing all the posts, I'd thought I share my experience.
I've had my RX65 for over 6 months now. I have it mounted just above my rear view mirror and just below the upper tint. I turn off x band, k band and SWS, leaving only KA superwide and Laser, as the main threats here are the 6F multanova tripods and handheld lasers. Multanovas here are placed facing oncoming traffic.
During my encounters with the various multanova traps I find I get a varying range of detection - anywhere between 500 metres to only 50 metres of warning sometimes.
I also find that my detector usually needs a direct line of sight with the multanova unit in order to give adequate warning time, otherwise if I'm following a large truck/4wd or if the multanova unit is blocked by other objects, I wont get a warning till less than 50-100 metres.
I've heard that some multanovas operate on varying power outputs from very high to very low, hence the resulting fluctuations of detection range.
Has anyone else had this problem of varying detection and is there any other way to improve my detection range?
I've tried mounting high and low, but get pretty much the same results.
Any comments/advice/experiences welcome!