First off, thanks for providing all of the great information resources over the years. Since I don't see any reply to your question yet, I'll share what I know in hopes that it may provide you some i
I've started lubricating the cables on my HDX589 with PreLube 6. For the main spool cable, I applied the lube when lowering the tower by spraying into a slotted plastic funnel on the cable. That tech
Rarely discussed antennas are the Bobtail and Sterba curtains. Google them. These produce a bidirectional narrow beamwidth pattern with low angle gain, and are fun to build (measure, don't guess at t
Back to the question I asked, and answering it -- I rented a 40' boom lift to lube cables and check and fix some things. Today I lubed all cables for 2 HDX589s in about 4 hours. I (still) have a rota
My G2800 SDX rotator only rotates 350 degrees, the manual says 450 with the overlap feature. When the overlap light comes on the mast rotates another 90 degrees CW (right), so that seems about right.
Good point on the bearings, particularly if they are ball bearings. Even without moisture, sustained non-rotation under load causes the oil film to breakdown and fretting/corrosion degrades the race
I've been looking for a replacement that would fit on the current base - RCB-70 in a robust base as specified for the LM-470 and the LM-354HD. No towers in good shape have popped up. A while back, I
McMaster has them to 8" in SS. Grant KZ1W I found a few places but they sold in quantity. I only really need two but would buy a few more to put in stock if necessary. I know that this is a bit of an
Jim, When I asked UST for the torque on my HDX589s, the answer I got was "what a man can apply with a standard wrench." Very techie, those UST engineers! I used a torque wrench set for 140 ft-lbs (w/
One leg of a self supporting tower falls "up" - it fails in tension. My nuts are tight after torquing bolts to 140 ft-lbs... Grant KZ1W K8UR Snug tight is a standard term commonly used in the design
Great to have some technical specs for "snug tight". Thanks. A hammer struck spud wrench? I would think the spec means a typical tapered spud wrench about 18" long for a 1" bolt. I'd estimate ironwor
Tubing usually means the OD is measured in fractional inch increments, usually 1/16", eg 2", 2.25" etc. Pipe usually means conforming to the Inch Pipe Standards - the inch "size" e.g 2" is not 2" od
Well written investigative reporting about a technical issue of interest to tower-talkians: http://www.sfgate.com/bayarea/article/Bay-Bridge-troubles-began-with-design-4616774.php#photo-4819308 your
"with guys of course", the only limit is the spring rate of the trailer and the load rating of the tires. The guy down force can be substantial, so you might need to block the trailer so the load is
Check out Ufer grounds. If you insure your base rebar is well tied and the tower anchor bolts electrically tie to the rebar (I welded small rebar connections to the anchor bolts, but several good tig
Building codes now REQUIRE Ufer grounds in many jurisdictions for new foundations. Codes also REQUIRE that rebar be covered with concrete, usually a minimum of 3" to prevent corrosion ingress along t
There are point to point 802.11 high power (like 1 watt) links that if connected to a high gain dish have line of sight ranges that well exceed 10 miles. Check EnGenius, but there are others for unde
"extrapolation" may have been a poor word choice, but my reasoning is that copper pipes are not buried without special precautions for domestic water service because of corrosion. Another reason is t
"extrapolation" may have been a poor word choice, but my reasoning is that copper pipes are not buried without special precautions for domestic water service because of corrosion. Another reason is t
Agree that the Ufer wiki entry re "chip and flake" is soft. However, the potential problems with buried copper or copper in concrete are well documented/known issues, so I think the logic holds. I th