Batboard

Just want to check. We are putting up a wooden utility pole by our station (approx 70 ft). Antenna to be mounted to a pipe that is attached to the pole. Do I need to ground the coax at the top along with the pipe and attach that to a ground wire to the earth and put another ground on the coax at the base of the pole.

Sorry if this sounds elementary. Just checking myself.

It would be in the best interest of equipment survival to add a heavy ground wire going
up the pole to the metal mast and or antenna. If the pole is not already up, you could
try talking with your local power company or telephone pole boys and see if you might
just get the copper wire and staples from them. Run the wire down the pole and
make a but coil on the bottom of the pole that goes in the ground. This will provide
a ground with out using any ground rods.

Jim

jban wrote:Just want to check. We are putting up a wooden utility pole by our station (approx 70 ft). Antenna to be mounted to a pipe that is attached to the pole. Do I need to ground the coax at the top along with the pipe and attach that to a ground wire to the earth and put another ground on the coax at the base of the pole.

Sorry if this sounds elementary. Just checking myself.

No, the pole is still on order. I had planned to run a #4 ground wire up the pole as you stated. I am still unsure if, at the top, I need to ground the coax and the antenna as it attaches to the pipe mast. I have heard mixed remarks on the Board about the need to ground the coax at the top but I think that is refering to a metal tower.

John

Yes. It is best practice to gound the coax at the antenna, every 100 feet on the tower, where it leaves the tower, and at bulding entrance.
In your case, sounds like a ground kit at the antenna, and where the coax leaves the pipe.

Also a Polyphaser at the building entry (within 24" of building entry).

Thanks for the replies. This is what I thought. We are mounting a repeater in a cabinet that will be attached to the pole. Can the polyphaser be located on the bus bar inside the pole mounted cabinet?

Lightning does not like to take U-turns. i assume that your coac will run past the cabinet, take a U-turn and enter into the bottom of the cabinet. In this case, I would tend to install the polyphaser outside the cabinet, before the coax takes the U-turn. Although I have not installed polyphasers outside, I understand that certain models are they are fully waterproof, and with proper sealing, this is an acepted install practice.

Here is one model http://www.polyphaser.com/productdetail ... em=VHF50HN