Manfrotto definetely will have a clamp for you.
www.manfrotto.com. Manfrotto makes very good gear, be prepared to pay for it, but, the quality is what you're getting here.
One thing I notice in this thread and others here is the "
bnc cable", "
rca cable",
etc cable. BNCs and RCAs are connectors. I could if I was really motivated go about
crimping RCA connectors onto some heavy
gauge solid core
wire. It would have an
RCA connector on either end. So does that general purpose audio/video cable that comes with your DVD player. Big time difference in terms of whats between the connectors, which is what counts. Likewise, a pair of XLRs on some RF cable is different from XLRs on some
microphone cable. RF cable with
BNC connectors is jut as good as RF cable with RF connectors which is just as good as RF cable with
RCA connectors. It's the cable in the middle that counts.
I'm with Andy though - your camera's composite signal will "work" if you
build an
adapter from a
BNC to
XLR or the like, but, the
impedance of the cable is not ideal. Would be better off just pulling the right type of cable to the location. Doesn't have to be a permanent install obviously, get some black
gaff and make it look nice and be safe.
avkid - unlikely you're going to need a distribution amp here. Even a couple hundred feet, feeding off a camera into a
router or
switcher you should be OK. It's a
point to
point signal. You need a distribution amp almost always when you've got a modulated signal thats split, or you're splitting the composite signal multiple times (e.g. a dub rack).
ldsfx - what makes you believe that a
cctv system is standard issue for a school? I've been in more than a few of them at least here in the city (think 650 schools), I know of a few that have one. In any case it's not as simple as just plugging the camera into the
system. You need to have that signal modulated, which requires either a spare modulator thats on the combiner, or you need your signal routed if the modulators are behind a
router.