Just curious... Seems to me I read somewhere that extra coax between
antenna and radio should not be managed in a coil. Any truth to this? If
so, what's the issue?

I've got an attic antenna about 20 feet or so from an ICOM R8500 connected
with 50 feet of RG6-U. This leaves about 30 I keep coiled and wire tied on
the floor.

Thanx,
Bob