Folks: I am refurbishing a State Highway Department (Caltrans) floodlight support trailer for re use as a ham radio tower trailer. The trailer has a HD Tristao 60 ft tower, with two motorized pivot (
Kelly, and TT: One reason for the desirability of broad, flat ground conductors at RF, is that the series inductance of such is much less than "round" conductors of any manageable size... While a nar
Folks: I am trying to positively ID the tower mounted on a tower trailer that I picked up, and I am refurbishing. The tower is 3ea 20 ft sections, nested, slightly taller than 20 ft, and looks like a
Dave Thonpson Said: SNIP: What I suggest is that you check out the winch and the cable connection at the tower leg end. If you ever need to replace it use a foundry not a boat place. I use bricko blo
The control box of our GS-800S rotator is not very user friendly, demanding attention for the duration of the rotation of the beam. The rotation speed though, is great...seems twice as fast as say, a
Folks: I have an old Tristao 60 ft crankup, in very good condition. No rusting showing through the galvanized structure at the moment, anywhere, even though the tower is probably 15 - 20 years old. S
Hello Tommy, I recently dismantled a C31XR and found it easy. It really helps to have a drill press acessory to a hand drill, (or a real drill press) and a vee shaped cradle for the tubing, to accura
SNIP: Jim Woods Said: From: "Jim & Velma Woods" <woods@grantspass.com> Also, a few miles away is a mid-sized mountain which is east of my site. I used a topo map to determine that the top of the moun
Hello again Jim, I am assuming you gave me True azimuths, not magnetic azimuths... Your more detailed figures detail the vertical angles over the two mountains as follows: Red Mountain: 6.5 deg verti
From: Jim Jones <k0hy@comcast.net> CC: towertalk@contesting.com Pat What effect does a tall tower (100+) have on these angles? Seems to me a small change in elevation on 1 end would make a big change
Bear in mind also that moving isn't breaking. A tower can potentially flex a pretty substantial (and scary, if you're up on top) distance without failing (and, in fact, that flexing is essential to a
There have been discussions in the past about coating structural components of towers, including guy anchors, with various sealants from bituminous tar, to paint, zinc coatings, to whatever... I unde
From: "Hank Lonberg" kr7x@comcast.net Said: Malcolm: If you notice the sections get larger as you go downward from the top. The tower sections get stronger and can handle more moment as you go downwa
From: Jim Jones <k0hy@comcast.net who wrote: He was changing lamps during the world series?? Yes, or at least at the floodlamp pole platform locations, servicing them..when the earthquake struck (;^0
Folks, I have found a potential problem, on an older crankup tower, that I am refurbishing. The aluminum roller-guides at each section overlap, have aluminum straight pin-axles. The pins are about 3/
Thanks Roger for your valuable feedback. I assumed a Tri-Ex tower because the tower trailer has a metal data plate riveted to the frame. The data plate is not easily readable,(old, corroded) but the
First, a Million Thanks to those TT'ians who are valuable helpers in getting the old tower trailer tower up again.... A question: Some towers implement a pull down function. Does this function requir
Whoa.... Again with all due respect...the coax coil balun requires the RF to transit the coax's complete length inside the coax, even that which is coiled into a choke... before performing it's choki
73, DX, de Pat Barthelow AA6EG (831) 646-0388 aa6eg@hotmail.com From: Bob Nielsen <nielsen@oz.net> Snip.... is each Just an educated guess, but the zoning code for an Acre, as you noted above is R-43
Folks, Many of us really appreciate the great exchange of knowledge and wisdom of grounding techniques and tips...It is interesting to see the variety of opinions among wise men to the topic. I stumb