-Steve K8LX Oh, the irony. As a means for cutting down on unrelated posts, please consider filtering out any incoming TowerTalk posts that contain the wording "off-topic" in their subject line. _____
They're the OM's that are on the far left or the far right. No, I don't know what (polarized) ohms are... _______________________________________________ _____________________________________________
I have always just guess when converting a tower to a wire diameter. The original poster seemed concerned that his tower would effect his horizontally polarized HF beams, I have not seen that occur.
It's not so much the appropriateness for smaller cables. The small DIN connectors - 4.1-9.5 & 4.3-10 - were developed in an attempt to make compact *jack fields* while retaining the PIM performance a
You are correct, Steve, but along with more dense jackfields, one has to use smaller cables than, say 1-5/8. Bit of a circular argument I guess. If 1-5/8" cable was still being installed at cell sit
1-5/8" has never been used to connect directly to a jackfield, so I'm not sure where you're coming from. Large feedlines always transition to a 1/2" or smaller jumper when connecting to a multiport r
Yup. However, if big coax was still being run up cell towers, you would see 4.3-10 gradually appearing on those lines, to simplify jumper stock. A case could be made for manufacturers (including ham)
It's a flat panel with multiple bulkhead connectors. As found on current multiband cell antennas with 6, 8 or more connectors, and especially *MIMO* mattress antennas where you might have 12 or 16 co
Right. As a matter fact, it's rare that the salvage/resale value of *any* tower is higher than the professional insured labor to remove it, unless there are valuable appurtenances that go along with
Yale Cordage, in some of their high strength ropes, uses what they call UHMWPE (Ultra High Molecular Weight Polyethylene), which they do NOT identify as Dyneema. They have manufactured these ropes fo
Yale Cordage, in some of their high strength ropes, uses what they call UHMWPE (Ultra High Molecular Weight Polyethylene), which they do NOT identify as Dyneema. They have manufactured these ropes fo
Seems like if the wind is in-line with the booms, there will be a small amount of torque even if the antennas are perfectly wind balanced (if they share the same side of the mast). And that small tor
The discussion is more about rotational torque on the mast and rotator than a worry about a tower falling down. Think of it as an academic exercise. -Steve K8LX Guys, I really got to wonder about thi
I missed the torque part however I wish someone could explain this in simple terms. I'll give it a try. Stick a tennis ball on top of a mast. It creates no rotational torque in the wind. Stick the t
It just occurred to me that with a small lever arm and single long boom (which all booms are), equilibrium might occur well before the boom goes totally crosswind. At this point I'm entering the area
I believe you have it figured out. Rohn 35 (as it was commonly called) had the Z braces reversed, and it always bothered me a little because when I climb I like to grab the diagonal of the opposing r
All great points. A tall skinny tower with slip rings, with many large antennas, in a high wind area, is a temporary setup IMO. -Steve K8LX Hello all, Couple of comments on K4JA's tower failure. The
I agree with KQ2M that there probably is an intermittent someplace in order for such a large change to occur, even though it's a given that measurements at 5' aren't very predictive. Put the Beta mat
I dare say that everyone on this list is also subscribed to a groups.io reflector, so they have "tried it". Also I suspect that many who clamor for a better web based presentation of their favorite d
I've never used a torque wrench on cable clamps - I suspect I've tightened them tighter than needed, but my theory is that if they don't break while cranking them down, they won't later on (unless yo