[TowerTalk] Conduit runs in tower base

[Bill Ogden]

I did something similar (1.5 inch sweep in the concrete base) of a former
tower.  Big mistake.  Use at least a 3" conduit.  Schedule 40 seems to be
ideal.

I have a coax switch control cable, a rotator cable, two coax cables
(buryflex), and one SteppIR control line.  They are very small in a 3"
conduit, but pulling another cable is already a nontrivial job.  Remember
to use a very good "messenger" or "tag" or "pull" rope.  I used a 1/4"
dacron line that should stand up to moisture.  There always seems to be
condensation in the conduit.

I used two 90 degree schedule 40 turns at the antenna end and I remove
these when pulling a line.  They just sit on top of the vertical 3" conduit
that emerges from the ground.  (On my current tower, I did not embed the
conduit in the tower base.)

Bill
W2WO