Tom,
If you hadn't said 75 ohm TV coax, I'd say it would
work just fine either way. If you would change that
"TV coax" to something like RG-59 (or whatever the other
size of 75 ohm cable is) you would have much less trouble
making connections. The TV stuff uses aluminum braid, which
is a real P.I.T.A. ...
'Doc