I got one of those ages ago with the V1. I was terribly guilty, but the V1 never made a peep. Cop starts giving me the whole "you know how fast you were going" schtick and as just getting to the good part when he noticed my V1:
Cop: What's that?
Me: This?
Cop: Yes
Me: A radar detector
Cop: You know those are illegal in this state?
Me: I do
Cop: May I see it?
Me: Hands it to him
Cop: Give me a minute
<walks back to his car for more like 10 minutes>
Cop: Ok. I'm going to let you off on the speeding, but you need to slow down.
Cop: His is your radar detector back and an equipment citation.
$25 ticket vs $500 minimum plus risk of jail time if I got a dick judge in that county. Worth it.
Not all cops are bad people, but there are certainly some dicks out there. At least these two examples were smart enough to realize they weren't likely to get away with it and backed down instead of doubling down.