Seal the connector with a layer of the 3m rubber tape and then the 3m type 88 tape. Extend beyond the connectors about 2 inches and before you put the type 88 tape on use the warmth of your hands and pressure to "mold" the rubber tape down on the connectors and coax for a final seal.
Scotchkote is good, but it does not last very long. It's use is a religious discussion. I use it as it does tend to melt the tape and seal it down. If the DB 420 is brand new...be sure and check all the nuts that connect the harness center conductor and shield onto the dipoles. I have seen those on new antennas only hand tight. Also, be usre to use a good Polyphaser lightening protector. Don't use one of the cheap-o types. Polyphaser or one similiar is best. Also, be sure it is grounded well. A last item that many forget is a coax grounding kit. They are cheap insurance against lightening. Get the grounding kit for your coax and install one at the top about a foot or two after the connector and ground to the tower. Then install one at the bottom as the coax comes off the tower and heads to the building.repeater. Ground it to the ground ring (if there is one) or tower bottom ground bar if there is one. If there is not a ground bar or ring, then at least drive in a ground rod and attach it. I have found an hours work on these details and the 20-100 bucks spent on grounding and protectors can save you thousands later. Paul Gilbert, KE5ZW Austin, Texas On Fri, Nov 21, 2008 at 6:13 PM, wa5luy <[EMAIL PROTECTED]> wrote: > I know this subject has been kicked around in the past but I need a > refresher. We are about to install a brand new DB 420 at the top of our > 220 foot county tower for our local 444.6 repeater. > Other than checking all the hardware and tightening the connections > what else needs to be done. Is Scotchkote a good thing? If so 3M > usually has several types of all of their products. Which is best? > Any other suggestions would be appreciated. > > > > ------------------------------------ > > > > Yahoo! Groups Links > > > >
