I have questions about the best way to get cables (coax, AC, and control) from the shack to the tower. Here are the things I have read or observed and am trying to take into account. Please correct m
I have questions about the best way to get cables (coax, AC, and control) from the shack to the tower. Here are the things I have read or observed and am trying to take into account. Please correct m
Generally true. There are some ways to do it legally. If it's buried, it might be moot. That's the practical reason for the electrical code requirement to that effect. And, from a practical standpoin
Alan: My comments embedded below. 73 de Gene Smar AD3F Electrical power circuits MAY not be run (not permitted) along with control wiring and coaxial cable, per National Electric Code. It's also a go
Not exactly. We run control cables and AC power cables in the same pipe when needed, it is not a code violation provided the insulation rating on the wire is correct. For example, if you use shielde
Actually, it's not the conduit that causes problems, code wise, it's where the cables terminate in the box. You have to have a one of those funky boxes with a divider in it, unless it's just a pull b
Could you pull a truly h-d extension cord in the (buried) pipe to the tower, along with the cables, and plug it in, only when you needed power at the tower, to an isolation xfmr? 73 Dave N3HE SNIP __
My comments embedded: Our local code says separate conduits must be used. I can't imagine using metal conduit. I used PVC. Not the white schedule 40 plumbing stuff, but the grey stuff specifically de
Several comments. First, use TWISTED PAIR for all control cables and for power. This minimizes crosstalk/noise to control lines. Don't bother with shielded cable -- cable shields provide NO magnetic
I have a run of direct-burial coax simply buried a couple of inches in the ground, along with my radial system. I used to have a control cable lying on top of the ground, until it got sucked into a l
Hi All, The NEC generally doesn't require more than 24 inches cover from the top of the conduit or direct burial wires in all areas with a lot of shallower exceptions listed. So if you have 24 inches
Twisted pair is a wonderful technology for balanced circuits, but, doesn't do the same for unbalanced circuits. Try running your coax (unbalanced) twisted around another coax, you don't get the same
AS an electrician, the only thing I will comment is that most jurisdictions will require you to get an electrical permit and it will be by NEC code, it will be a GFI protected outlet. Whether you pla
Twisted pair cable DOES reduced noise coupling in unbalanced circuits. The fact that adjacent twists exposed to nearly the same field are out of polarity and cancel is a VERY significant factor, and
GFI's are a wonderful thing for safety, but it is quite common for them to have VERY poor RFI immunity. I've blown some up that were close to my antennas (20-30 ft) running QRO, and needed to do filt
If that a concern either buy one to mount in the electrical panel, (pricey) or get a hospital grade commercial one; I personally have not experienced the problem, simply because I am using good comme
My point was taking 12 'control' wires of unknown state and voltage and blindly applying them to twisted pairs does not mean you are going to keep signals where you want them. For example in Etherne
I read somewhere, I think in Polyphaser's documentation, that the need to connect the tower ground with the shack ground and service entrance ground depends on the distance between them. As I recall
Hello Dick, Also in the Polyphaser's doc's quoted in earlier posts they recommend GRC grounded at both ends. This seems to me the same idea to equalize voltages in the system. The GRC also is a choke
Author: "Cam and Juli Hedrick" <walnutcreek@appstate.net>
Date: Fri, 15 Sep 2006 11:53:07 -0400
An electrical contractor friend of mine says that you can buys rolls of under ground conduit with the "Mule Tape" already inside complete with the lubricant for pulling cables. He has used this on 50