Belden 1694?! GOD, that's expensive stuff. It's primarily used for routing baseband analog video and SDI digital video in broadcast facilities. It's gas-injected foam dielectric with a solid copper center conductor. What kind of fittings are you terminating it with?
That cable is really overkill for an RF signal, but it *should* work. As Pete said, check the fittings... the blue Digicons should work well on it. Remember that the solid copper center conductor will bend easier than will the copper clad steel ones. I also remember reading somewhere that the copper-clad center conductors are better for RF than the solid copper ones, don't know if that's the problem.
If you have an extra roll or two you don't mind parting with, I'd gladly pay

I'm going to be running cable in a home studio soon, and will need 1694 to connect my broadcast gear.