When I get my RD, I know it is going to constantly bother me that I really don't know if the thing is even working. Would it really be that difficult to ship these devices with a small device which emits low level signals (of the pertinant bands) which, when placed within inches of the RD, would trigger a response?
Since radar guns ship with a small tuning fork for testing, I just thought maybe "we" could get a similar device. I suspect that it would make RD's cost prohibitive, but I thought I'd ask anyway.
Sorry if this has been asked before. Couldn't find anything by searching.