The technique of ripping a full length slot in a "coupler" piece 18" to 36" in length is a well established method I used in joining 12 and 15 ft lengths of 3" material. The assembly technique was to
I have had three different LM-470 towers over the years and each has a balance overlap or extension when completely retracted. It is true that when all the way down it is not possible to service or i
Bill, I have had the same issue with a couple of my LM-470 towers in years past and the method used was to tilt the tower over until it was horizontal, but I used a heavy timber (4x4) placed under th
Paul, I have had cable failure on one of my LM 470 towers as well. Although the cable was rusted, and many years old that failure was caused by another component in the tower system. The real culprit
Larry, Having added switches to 3 different LM-470's I found that there are several locations and ways to do it. The DWN relay is the most straight forward, as it can be mounted almost anywhere below
Eric, I do not have a 589 for sale, but I do have a set of base bolts for anchoring the Tee Base into concrete. I thought I was going to relocate my tower and bought a new set of bolts. There are six
Dink, You might try your idea of hanging some wire to "lengthening" the boom, but the approach I would consider is the technique of removing guy wire resonance by breaking them up with insulators. Br
There were several good responses to the question below - I have been using a prop pitch motor rotator for nearly 40 years with great success. Most power supplies are located in the shack and feed ca
Tom, You might want ot make a copy of this tower drawing as it may be useful in sale or installation of the tower you got from Jerry. http://www.tashtowers.com/pdf/LM354-01.pdf Norm W4QN ____________
John, Based on your comments below that it works both UP and DWN from the REMOTE position would indicate that the UP/DWN relays and limit switches are okay. This leaves two possibilities, one is when
Dan, The problem of getting heavy lubricant into a difficult location was a typical automotive issue trying to get 90w hypoid oil into the differential gear housing in the rear axle. The solution was
Mike, I have several selsyns, but all are 115v 60 Hz types - I think you will find that the voltage on yours is also 110v, but at 400 Hz (aircraft generator frequency) and dropping the voltage to 57
Mark, I would strongly recommend not locating the relay at the 80ft level on your tower unless you enjoy climbing, on a cold winter night, during a contest or other inopportune time. Because that is
Dwight, I am sure Roger and Cubex are still in business, but being a small company he may have taken some vacation time. However having been the designer of most of the Cubex 6 meter Quads I may be a
The term was Bi furcated - having two parallel contacts increases contact reliability significantly. Particularly important in telephone switches Norm W4QN == Message: 1 Date: Tue, 28 Sep 2010 13:14:
Terry, It does sound like you have water intrusion and that is causing the problem. Most likely it has been happening for a long time, and has been mixed with the lubricant and emulsified - this can
Bob, I think a more accurate description of several coiled turns of coaxial cable would be a RF Choke, serving to limit common mode currents on the outside of the coax cable. Norm W4QN == In a messag
Chris, The Tri-EX mast sleeve is designed for 2" tubing (OD= 2.0", don't confuse pipe sizes which generally describe the ID of the pipe. 1-1/2" Pipe OD measures slightly under 2" dia. and a little sl
Glen, I have had several TriEX LM-470 towers and none of them used "J" bolt anchors. TriEX system uses Steel 'Flags' (with mounting holes ) welded to Large Diameter Re-Bar cage that is imbedded in th
I have also had the sad experience of a cable failure on one of my LM-470 towers. My cables showed sign of surface rust, but the real failure culprit was a rusted out pulley bearing. When raising the