I would appreciate it if someone in the Tucson area would email me directly regarding tower restrictions in the general area. I trying to help a friend find out what areas to avoid and what areas are
Recently I saw a posting about T-matches which said that setting them up is done by trail and error and that they can't be designed using models. My experience is totally opposite. To date, I have su
(I'll try this again ...) Recently I saw a posting about T-matches which said that setting them up is done by trail and error and that they can't be designed using models. My experience is totally op
(one last try) Recently I saw a posting about T matches which said that setting them up is done by trial an error and that they can't be setup using models. My experience is totally opposite. To date
Comments on Stress Risers and Filling Holes Holes do create stress risers which means there is a local amplification of the stress around a hole due the disruption of shear flow. The higher local str
Hello all! In a effort to reduce the weight of a mast for my antenna project, it would be desirable to use a light-weight mast that is reinforced with an interior cylinder .. My question: Does one me
................. .............. -- Well, Dick, I'm an EE not a PE, so I need a little more hand-holding. I may want to use a mixture of different yield strengths... I realize that I have to make a s
Hello Dennis, Here's a way to slove your problem provided your mast clamps will open up to about 2 1/2 inches. Go to a local farm supply store or industrial supply house and get two pieces of rubber
Hello again Dennis, The answer to your question is, "Yes, this problem has been addressed." You could add to the boom to make is symmetric. There's a simpler way that was shown in an article in Commu
Chromoly 4130 Masts -- Important Information I've been seeing the messages about 4130 masts and have noticed that an important piece of information has not been discussed which may have an effect on
I'd like to know tha answer to this question too. I'm about to install a home brew 3el 17M Yagi 10 feet below my top 40-2CD at 140 feet. Am I about to make a mistake? Thank you from me too... Dick, K
Hi Steve, It is the ratio of the section modii of each mast. The 3"OD x .25 wall is 2.54 times stronger than a 2"OD x .25 wall tube of the same material. 154% more. 73, Dick, K5IU -- -- From: K7LXC@a
reference: Thomas E. DeHoff, WA7MAL reques for CDE rotor info Back to your question .... Some antennas are reasonably aerodynamically balanced and some are terrible. ( The difference is mainly due to
figure resulted antenna. and a only their For a long time the time honored way of rotator selection was by using the 'square foot' wind loading of the antennas method described above; it is imperfect
Tom, Your question is an excellent one! I've begun going through my concrete design standards and design guides to find the answer. I may have to do a lot of digging, but give me a few days. I may ha
Reply -- I know that AA6TT had stacked LPs on a rotating tower at one time. He has moved to a new QTH and I don't know if he's put it back up. You might contact him. 73, Dick, K5IU -- I was wondering
Rotating Tower Systems, Inc. For the past twelve years I've been selling guy wire bearings and rotating base units for 25, 45, and 55 tower. To date, I've been able to help about seventy people put u