My first reaction to this was "what causes guy wires to be missing, anyway?" But trees falling, vandals, errant backhoes, etc. are all valid concerns I guess. Guyed towers can certainly be built with
<snip> Probably just indirectly - you are apparently in lots of address books of fellow reflectees. I've seen no pattern like that. What I don't understand is why so many people continue to use Micro
The MOCAP brand of silicone tape is one of the more popular vapor wraps for sealing connectors. It sticks to nothing except itself, so doesn't gum up the works, ever. Properly applied, a layer of thi
Actually, there are inexpensive gyro based antenna positioning systems marketed to the recreational boat crowd for DirecTV applications. I imagine that larger versions are in common use on ships for
Things may be different in Florida, but I've noted that most crankups around here, after being up for 10 or 15 years, can't be folded over anymore because of tree growth. Many can't even be retracted
There is a big difference between "don't exceed the manufacturers ratings" and "buy one heavier than you need". The problem with aluminum is that it work hardens. If you load it near it's initial max
Did I say that aluminum doesn't have good uses? Airplanes are obviously well engineered. The history of aluminum towers - judging by how many of them that have ended up laying on the ground - is not
I don't think anyone is arguing with that. Any item that fails in normal service is either not properly designed, or not properly built. However, aluminum IS much more subject to work hardening than
I just want to expand on this a little - comparing the aging properties of flexing steel vs aluminum. BTW, I'm not a materials (or any other kind of) engineer - my thoughts on this subject are formed
Don, Thanks for your comments. I didn't represent anything I said as evidence. As a thought experiment, it's legal to "know" something like that. Are you suggesting that the failure mode is exactly t
<snip> Thanks Hank. I see that I've been laboring under some false assumptions about the concept of metal fatigue, and regret my post. Some reading is in order. I'm still pretty sure about relative p
My friend Eric K8LV seems unable to post to some of the reflectors because of the new AOL front end he is using, so he asked me to relay this. His e-mail address is evonvaltie@aol.com -- Steve K8LX *
While I think LMR-400 is a much better choice than 9913, water ingress is caused by improper weatherproofing, period. Proper weatherproofing WILL keep the water out - it'll also keep it IN of course.
You think training installers to seal properly is easier than installing a simple pressurization system? Nope! Now consider that a pressurized system will continue to function even with bullet holes
Paul, no one suggested that the connector be relied on. A backup system must always be provided. That backup can be pressurization, when connectors with air inlets are provided; or commercial style w
<snip> Of course. I've never liked 9913 - am not defending it - never bought any - never will. I hope that's clear. However, whenever I see someone claim or imply that weatherproofing a splice is imp
The CATV industry learned early on to design systems that could be installed by the average installer - probably a little below average, on average! One station I work for on a regular basis has rect
Why have PRB-1 in the first place, if going mobile is all we need? There's something funny going on at the FCC. -- Steve K8LX AN Wireless Self Supporting Towers are now available! Windloading tables,
For better than 1° accuracy, a good compass, such as various Brunton or Suunto models, is all you need. Under $100.00. Transits do better at higher cost of course. If you have a few grand to spar
Most wireless ethernet gear runs on 2.4 gHz, while the wireless ISPs use a 2.4 gHz downlink and 900 mHz uplink system, though these systems are not capable of 500mb. 500 mb sounds like it might be on