Transponder code switching

Dark lonely night and you are the only airplane in the airspace
squawking VFR. You call up for service I'll give you a code and radar
contact in the same breath.

David Megginson wrote:
Newps writes:


It takes at least two sweeps and sometimes as many as 5 sweeps before
the radar will tag you up on a code you're squawking.


Is that true of all radar equipment? I've sometimes been assigned a
new squawk code then heard "radar contact" within a couple of seconds
(usually, though, it's more like 20-30 seconds, which would agree with
what Newps writes).


All the best,


David