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Best time to replace an A99? Just before you leave the store.
Turn around, get a refund and buy an Imax - if you must have a fiberglass radial-less vertical omni.

After this long the fiberglass resin is well cooked by ultra-violet from the sun. I'd clean it up, paint it with anything you have, sand off the paint which will help prevent the fiberglass from becoming airborne then hit it with some clear or perhaps a rubber-type coating and put it away for a camping antenna or to sell or give away.

Replace it with a metal ground plane such as the Zero-5 5/8 or Penetrator-500, or a Sirio NV4K depending on your power handling needs.

You can adapt & use that A99 radial kit on an Imax if you get a grinder, or a stone bit for your high-torque plug-in hand drill, and grind away a small triangle of aluminum at the base of of the Imax mounting plate, until the A99 radial kit mounting ring fits up high enough into the Imax base mounting tube to lock well in place, then drill a set of new mounting holes up an inch or so for the bottom U-bolt.

Though a bit of work, I prefer this system & look to the funky Imax radial mounting plate.

<blockquote data-quote="Needle Bender" data-source="post: 552251" data-attributes="member: 13339">Best time to replace an A99? Just before you leave the store.Turn around, get a refund and buy an Imax - if you must have a fiberglass radial-less vertical omni.After this long the fiberglass resin is well cooked by ultra-violet from the sun. I&#039;d clean it up, paint it with anything you have, sand off the paint which will help prevent the fiberglass from becoming airborne then hit it with some clear or perhaps a rubber-type coating and put it away for a camping antenna or to sell or give away.Replace it with a metal ground plane such as the Zero-5 5/8 or Penetrator-500, or a Sirio NV4K depending on your power handling needs.You can adapt &amp; use that A99 radial kit on an Imax if you get a grinder, or a stone bit for your high-torque plug-in hand drill, and grind away a small triangle of aluminum at the base of of the Imax mounting plate, until the A99 radial kit mounting ring fits up high enough into the Imax base mounting tube to lock well in place, then drill a set of new mounting holes up an inch or so for the bottom U-bolt.Though a bit of work, I prefer this system &amp; look to the funky Imax radial mounting plate.</blockquote>

[QUOTE="Needle Bender, post: 552251, member: 13339"] Best time to replace an A99? Just before you leave the store. Turn around, get a refund and buy an Imax - if you [B][I]must[/I][/B] have a fiberglass radial-less vertical omni. After this long the fiberglass resin is well cooked by ultra-violet from the sun. I'd clean it up, paint it with anything you have, sand off the paint which will help prevent the fiberglass from becoming airborne then hit it with some clear or perhaps a rubber-type coating and put it away for a camping antenna or to sell or give away. Replace it with a metal ground plane such as the Zero-5 5/8 or Penetrator-500, or a Sirio NV4K depending on your power handling needs. You can adapt & use that A99 radial kit on an Imax if you get a grinder, or a stone bit for your high-torque plug-in hand drill, and grind away a small triangle of aluminum at the base of of the Imax mounting plate, until the A99 radial kit mounting ring fits up high enough into the Imax base mounting tube to lock well in place, then drill a set of new mounting holes up an inch or so for the bottom U-bolt. Though a bit of work, I prefer this system & look to the funky Imax radial mounting plate. [/QUOTE]

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