I use Ideal No-Ox on all slip joints and ALL screws. It is available from most electrical supply outlets or Home Depot. It is a gray gooey compound. You must mix the contents before use. There is a clear liquid and I believe the gray stuff is zinc. I do not use the green stuff available, just doesn't seem to work as well as the gray stuff.
I also clean all edges of aluminum before assembly, there are many burrs left behind by machining. These burrs can cause uneven tightening and over time cause cutting into the other piece. I remove the screws of the coax connector, one at a time and coat with No-Ox. I coat the radial screws and radials where they come in contact with the base with No-Ox before installation.
I assemble the antenna and put it on a 5 foot tall mast in the back yard away from other metal objects. Attach my bird meter with an adapter right to the base of the antenna. Short coax to a HT or mobile rig set to 5 watts and check the match. Adjust as necessary�. Wipe the entire antenna with denatured alcohol, let dry and then spray with 2 or 3 coats of a good clear lacquer.
I wrap the installed coax connector with scotch 33 tape after tightening to the antenna with a pair of pliers, just to snug it up. I overlap the tape from the coax back and forth up to the base of the antenna to add strain relief. Then I wrap the whole thing with coax seal or coat it with Scotch-Kote. I have had the coax seal dry and crack and fall off. The scotch-kote works well over time.
Scotch cote is available from electrical supply outlets. When I use it I put two or three coats.
I have had a G7-144 and a G7-220 on my tower for over 19 years. Both work great. Both on repeaters. Never had a lightning hit. Knock on wood! Three 10 foot ground rods around the base with #2-O welding cable. The 144 is on the top, tip at 71 feet, 220 side mounted, tip at 48 feet.
P.S. use a flexible jumper from the hardline to the antenna base, 2-3' makes it flexible.
I just ordered a Hustler G-7 220 Base ant to for Now be used as a
Remote link to My 440 Repeater, it will be up about 75 Ft using � In
LDF-450, Before I put it up is there any thing I should do to it to
make it better
Thanks Don KA9QJG
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