[TowerTalk] Any Installation Tips For Trylon T400 Tower Installation?

[David Rich]

4JUN00

Hello,

Tom Baugh KG9NB, a friend of mine, has recently purchased 56 feet of
T400 that we plan on putting it up very soon.  We have found the web
site containing photographs and comments on the KA9FOX tower
installation very helpful.  I would like to ask you the following
additional questions concerning the tower installation:

We are located in Jackson County, Missouri.  As this is a
"self-supporting" tower we do not intend on using guy cables.  We plan
on following the manufacturers instructions for the concrete
foundation.

The manufacturer claims that the section bolts only need to be tightened
to 6 ft-lbs of torque. This is probably not a problem since the bolts
use lock washers but will the bolts become lose over time?


We are planning on using a 20' long mast with more than half extending
out the top of the tower.  We are using a Yaesu G800SDX rotator.  We
plan on putting up a Force 12 C3S just above the top of the tower, then
a three element 10 meter mono band, a 10 element 2 meter beam, and  a
Cushcraft AR270 5 element 2 meter / 70cm beam close to the very top of
the mast. The Yaesu rotator does not look very heavy duty in
construction from the outside.  Will one Rohn thrust bearing be enough?


Do you have any tips or tricks as far as leveling towers with tapered
sections?  Is it necessary to temporarily guy the bottom section in
place before pouring concrete?

Tom is considering running his coax cables inside some plastic conduit
and then mounting the conduit inside one of the T400 legs.  Is this a
good idea?  I thought it might add to the wind load and also make it
difficult to remove a bad cable if one should go bad a few years down
the road.


Thank You,

Dave Rich KG0US
kg0us@swbell.net






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