Here is something to consider when sealing your coax connections.
I've found this tape type product messy on un-installing some antennas I've done. It's hard to remove and save parts for re-install, and I
don't find that it's particularly effective at keeping water out of the coax after it gets old. This is because it can and does crack as it dries out, and water can get into your coax from above the feed point. On an old install you can actually see the marks left on parts below the tape installation...where nondrying solvents have leached-out and run down the antenna or mast below.
IMO most water gets into your feed line running down the line and other parts into the connector, and it's not from water outside getting inside the connector...unless submerged. Air gap type coax (9913 and others) and some foam type coax can even siphon water in the line in the typical install when coax is running vertical.
When I've found this product old and used on both sides of the feed point, as in a V58, Vector or Sigma4, or I-10K type feed point the product is always a mess, near impossible to fully remove, it's dried out, cracked and probably not stopping any water, and sometimes looks to have actually trapped water around the connector. It will make a nice seal however when it is fresh an recently installed.
With the A99, Imax, GainMaster type antennas, if you seal below the feed point you're really asking for trouble by actually covering up the drain hole and trapping water inside the tuner area, and that's not good. These type antennas all have drain holes in the very bottom where the coax connects. And you can't use this product effectively above the feed point, because that area is enclosed inside the mount. Above the mount and inside this area is probably where most of the water access occurs...allowing water into your feed line.
Just think about it, the area around a PL259 that can be susceptible to water in typical installations is around the top of center pin which is almost always pointing straight up, and if the SO239 above is not also protected then water can go straight down into the coax as water runs constantly down the antenna when raining, or there's heavy due and humidity that cause heavy condensation.
I recommend a non-conductive teflon filler product called "STUF" that is cheap, goes inside the coax connector easily, without mess, never hardens, and a very little bit will shed water like off of a duck's back.
Look it up on the Internet at some ham dealers including at:
www.aesham.com.
Without due consideration,
this tape product might be like buying a fishing lure...it might look good to you, but does it really do the work and look good to eat to the fish?
