[TowerTalk] TowerTalk Digest, Vol 260, Issue 2 - OR2800 cable type

[Jim Brown]

On 8/2/2024 6:24 AM, w5wz at 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