On Fri, 8 Feb 2019 02:19:28 +0000, Bill Wright wrote:

It would likely introduce an impedance 'bump'. Two fs and a barrel
connector don't seem to.

Aye, even though they look cheap and nasty F-type plugs and a barrel
is designed to be constant impedance.

I'd probably not bother with self amalgamating tape in a floor void,
unless the is was a suspended floor over bare earth. Ordinary heat
shrink will protect the joint but won't keep moisture out, capillary
action between the heatshrink and cable jacket. Adhesive lined
heatshrink would be better but can be a pain to get off again and
doesn't really flex very well. Self amalgamting tape doesn't suffer
these problems.

--
Cheers
Dave.