On Mar 12, 7:56*pm, "Phil Allison" wrote:
"William Sommer****** Fool "

5mV is down in the range of microphones and phono pickups. I would not run
such a signal through 35' of coax.

** Co-ax works perfectly with microphones.

* *Every bit as good as shielded twisted pair cable.

.... *Phil

The OP has yet to tell us what kind of a dignal source he has, AC vs
DC, etc.