I came home from Visalia to find my antenna system freewheeling. The mast holds 4 yagis, one of which is very large, and is rotated by an Orion rotator. If my suspicions are correct, the problem is t
Les, Although my mast and beams only weigh about 250 lbs. I use a clamp on the mast and jack against the clamp with a modified car scissor jack that fits in the tower and jacks off of the cross bars.
I use a cheap scissor jack positioned on the top plate. I either jack against the mast plate on the lowest antenna or a step bolted to the mast. Sent from my iPad ____________________________________
On a used 2800 I acquired the prior owner had secured a cut off box end wrench on the center bolt with a screw through the wrench handle and threaded into the Orion plate about 2" out from the bolt,
Author: "Roger (K8RI) on TT" <K8RI-on-TowerTalk@tm.net>
Date: Mon, 25 Apr 2016 00:13:20 -0400
I have a "pry bar" that the end will fit under the mast in my PST61, The pivot point is only a couple inches from the end while the bar is about 2' long, that gives me a 2: 22 multiple (11:1 ), or 40
I use a small automotive hydraulic jack. Place the jack under the rotator. Loosen the mast thrust bearing(s) and rotator shelf u-bolts. Jack everything up the required amount then tighten the thrust
Two muffler clamps holding a threaded quick link to the mast and a come-a-long hooked to that has allowed me to jack up the 300+ lbs of antenna and mast. Have hooked from the bottom of the mast too b