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You are correct about using 102 whips for ground radials, they will sag.


It shouldn't make a difference on ground radials if you use steel whips or the original antenna elements or a combination of both. If it is RF conductible, that's all that matters.


You can also just go with ground mounted radials using nothing more than 14 gauge wire which will giver you a smaller footprint and will help with the high winds in your area. This type of radial system will be much better than those ground plane kits anyway and you won't have to pull your antenna down.


They work best if your antenna is mounted away from your house so you can spread them out in a circular pattern underneath the antenna. If your antenna is roof mounted, then simply lay the wires on the roof.


Just use 1/4 wavelength pieces of wire for each band you operate on and lay out as many as you can. The more radials per band, the better!


You can bury them slightly in ground or stake them taut into the grass and the grass will eventually grow over them which is fine.


See pic below for an example you can easily make yourself.