[TowerTalk] rohn flat top sections

[steve sala]

I am going to exchange my pointed 25AG3 top section
for a flat section so I can use a thrust bearing.  I
have two choices:  1)Replace my 25AG3 top section with
another regular 25G section and use the small flat top
BPL25G bearing plate with it or 2)Just use the 25AG4
flat top section.  Does anybody have an opinion on the
pros and cons?  I have the extra regular 25G section
here so I would only have to pay freight for the small
bearing plate to get it here while if I used the
regular 25AG4 flat top section, I would have to pay
the freight for that heavy section.  Would both be
comparable for holding the same antennas?  I have the
85 foot tower guyed per the Rohn book at 30', 60', and
80' (the book published when I put up the tower 25
years ago).  Since I will be using a Force 12 5BA 5
band Yagi just above the top of the tower with a
lightweight M2 7 element 6 meter 6M7JHV Yagi antenna
above that and a M2 9 element 2 meter 2M9SSB Yagi
above that, again, would it make any difference how I
achieve the flat at the top?  Either way I would use a
TB3 thrust bearing for the 2" OD steel mast.
73     Steve K7AWB  Spokane Valley,WA

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