On 8/2/2024 6:24 AM, w5wz@w5wz.com wrote:
I use 12-2 + ground UF direct burial romex in the conduit and up the
tower for the motor leads, and 2 runs of RG-6 for the pulse counter;
center conductors for the signals, and the shields are bonded together
at the top and bottom of the tower, and also at the shack entry single
point ground system. No cable problems since installation in 2009;
however I have had to replace the pulse counter in the rotator once.
On the basis of my understanding of transmission lines, I would expect
un-shielded twisted pair to provide more than enough rejection of noise
and RF. I know nothing about the susceptibility of the electronics on
either end to lightning; certainly that should be taken into account,
but shunt GDTs should be sufficient.
73, Jim K9YC
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|