First email I've seen since the 14th -- Charlie www.baysidephoto.com www.thegallos.com _______________________________________________ _______________________________________________ TowerTalk mailin
Still about $600, but VERY VERY good, the Green Heron RT-21. I have one in my modest station, and was WELL worth the price -- Charlie www.baysidephoto.com www.thegallos.com __________________________
Cordless portable bandsaw -- 73 de KG2V Charlie _______________________________________________ _______________________________________________ TowerTalk mailing list TowerTalk@contesting.com http://
THIS exactly - As I said, tool of choice is a portable bandsaw, but the real tool of choice is a crane/gin pole and bring it to the ground. Lets face it, to be safe doing it up in the air, you have t
What I always wonder is are there QUALITY clamp type connector? I see some on ebay, but who knows how good they are. No soldering of the outer braid, and goes together like a BNC/N/TNC (which I don't
Hey Tim, What is the turning radius on this thing when it is done? Have you measured/calculated it? -- Charlie www.baysidephoto.com www.thegallos.com _______________________________________________ _
One of the "interesting" thing you can look for these days is boots that have non metallic rigid shanks, basically they are kevlar, or fiberglass (cheaper ones) and the like. It probably won't make a
In fact, I'll go further - there are reasons NOT to have three bearings along a mast, the main one being that unless the mast is perfectly straight, and you have perfectly lined up the bearings, you
...snip... Looking at the data sheets, they do not specify the Dielectric constant of black uhmw plastic, probably because black uhmw plastic is reprocessed, so the can't. It is listed has having the
I thought phenolic absorbed moisture ?? At least the old style phenolic did. Fiberglass based material might work. I have found that most grades of white uhmw will succumb to UV after time, turm brit
Of course this assumes the failure mode is due to a compression failure. As others have said, there is a significant torsion mode of failure, and at least in theory the leg COULD fail in tension, so
Be a bit careful in your analysis. Bolts usually have a rolled and or forged thread (well, hot or cold rolled). Cut threads are measurably weaker than a rolled thread. Some machine shops CAN roll a t
<snip> Any length of Steve, Change that to any REASONABLE length, I'll agree, but what happens if the length is long enough that R becomes dominant? I mean, say RG-8, the reistance of the center cond
Everyone is missing the easiest way. Put up the plastic owl, and rotate it slowly every day till the pigeons no longer roost, and THAT is true north I've found a good way to stop the pigeons from roo
<snip> <snip> Practical? Who said anything about practical? This is the annual True North/Plastic Owl/Tower Wrench Wench discussion. It has NOTHING to do with practical! _____________________________
...snip... For those of us with a problem with birds perching on out antennas (what is the max load of pigeons on a D-140? Anyone know?) it was suggested that we put a plastic owl on our masts, but m
Yes and no. Those CNC routers are good for thin-ish cuts in fairly soft material (aluminum is soft), but when you have to cut steel, or have to do large diameter work, they just don't have the rigidi
He doesn't, but I do -- 73 de KG2V - Charles Gallo Quality Custom Machine-shop work for the radio amateur (sm) www.baysidephoto.com www.thegallos.com _______________________________________________ _
Most are 3 phase, but today with 3 phase variable frequency drives (you can get ones with 110v 1 ph in up to I think 1 hp) 3 ph is trivial -- 73 de KG2V Charlie ______________________________________
...snip ...snip... I can't think of a good way to word it - except may to say a pair of rods closer than 2x is less effective - but say you had a pair of rods 3x (or 2x) apart, and you added a rod B