I built a couple of boxes with RJ45 to RCA break-outs. I will use these boxes to extend
the PTT/Keylines for my transverters from my shack where the IF radios are located
to my utility room where the transverters and coax runs to tower are located.
As I finish my basement I am putting a lot of CAT5 in the walls. CAT5 seemed like
a clean way to extend the RCA based PTT/Keylines since it is already in most of the
walls. I figure that each box costs about $5 with the parts that are involved.