Rusty, I think the recommendation from WA5ZUP is the one I would follow and for the reason he states, adequate room for the coax to flex and not caught on anything. The 1" spacing although possible s
Jim, The antenna is definitely a Telrex TB4-EC/1KWP 4 element Tri-Band, 30lbs of "Educated Aluminum". If you have a FAX number I can send you a copy of the catalog sheet for that model. however there
2) use case #2: 3 el SteppIR with 30/40 DE. This would be at 70' Doesn't excite me. Would like 2 el on both 30/40. So...the question is, what might be a reasonable single boom scenario around the ste
I am pretty sure that antenna is associated with the FAA as they have a large office building on that site. I see this antenna every time I visit my daughter in Ashburn, VA. Impressive. Norm W4QN ==.
The following was an old query that had been attached to a recent series of emails regarding Log periodic antennas. The answer about the one near Leesburg as being for the FAA is correct, and I was t
Dave, The best bamboo that is used for fishing poles and spreaders has been "flame" cured (dried) which hardens the wood (drives the moisture out) and adds a hard finish which is somewhat blackened b
Jack, The question of the "best way" is not easy to answer as each has trade offs. The best MATCH can be made with a gamma match, but adds extra complexity, and mechanical problems as a result of how
Rob, There are several conditions that may determine the best choice. In general I would recommend the hard drawn, stranded wire as the best choice as being all copper there is little to degrade. A c
Fred, Check the schematic, the indicator circuit is pretty basic using a 500 ohm remote sensing pot. and a milli-ampmeter. I suspect that you induced enough RF it the control cable (acts as an antenn
Frank, I have a set of US Tower 1" bolts that I did not use (did not relocate tower) and are available. They do cost over $50 each with shipping, make me a reasonable offer and I will ship them to yo
Dan, Limit switches for tower control are usually pretty straight forward circuit interrupt devices. There is the rest of the control circuitry however that needs to be considered. Your winch was sta
Bill, I have had the need to erect the Tri-Ex LM-470 tower on 4 occasions over the years, and in addition a heavier HD-589 US Tower using one of the methods describe in the responses you received. Th
MIke, First the basics, Is the power connection made and working?,?If you are using the remote control system then check if the power is "ON" at the tower control box.? The remote control package (at
Bill, The cautions that you have received are very real potential problems when motorizing a crank-up tower. Although I have not worked with the Tri-Ex WT series, I have motorized, and remote control
Garry, The assembly used a narrow band hose clamp, usually #12 or #16 depending on where it was placed on a tapered arm. The small tubing was brake hose, and about 3" long, and that was captured by a
Mark, I have a set of 6 bolts for the US-589 tower that I will not be using as my relocation plans have changed. These were bought from US Tower (they are no longer J bolts, but have a large nut weld
Here in Florida most major Marine supply stores sell the crimping tools and devices. Some also perform the crimping for you, that is bring in the cables and they will use their crimping tool. The par
That is the way the plate works, hooks over the cross bars, torques against the uprights. Works fine, I have had three LM-470's using Ham M or Prop Pitch motors and never a problem. The weight of the
I have had over the years three different LM-470 towers, and there were some significant changes. The most notable was the change from a single heavy lift cable in the 1960's versions to double strun
To: Martin Sole _msole@loxinfo.co.th_ (mailto:msole@loxinfo.co.th) Martin, I would like to make some comments on you Quad refurbishing plans - it may be easiest to address some of your questions with