"And no, the voltage is a maximum at the end of a radiator ... how can you have current flow at that point when there is no place for it to go???" ... depends on which end... -Rex K1HI Rex Lint Merri
Dave, I was thinking that a radiator had 2 ends. You corrected me: it has an end. I was referring to what must be a beginning. Therefore I agree. At the beginning, however, there is some current flow
Steel, but just for the splice - you've seen that, right? Like a "stiffener". -K1HI- Rex Lint, Consultant 26 Brek Drive Merrimack, NH 03054 PH: 603-860-7651 Have you thought about 3' rigid e
Dave, 6061-T6 has Tensile strength of 42K PSI and yeild at 35K PSI - See wikipedia. Stainless varies from about 75K to 190K PSI Tensile, depending on the allooy. See http://www.onlinemetals.com/stain
Rob's comments would suggest that at the bottom of the lake, where the water is in contact with the earth, the conductivity would be good, just like wet earth with an insulator above it - so while th
DAVE, ..."or do I need to angle them at 50 deg. as stated in the Rohn spec's." That should be taken as the answer... if it didn't make any difference, they wouldn't specify it. Don't forget LXC's max
Scott, With a side arm mount, you get about 300 degrees, not 90... at least on a 3 faced tower. You use a "gate" that hold the beam (in your case, dipole) away from the rotator mast about 2 feet or s
Don, The Teflon rod would spread the weight of the tower over 4 square inches or so: marty's would spread it over 40 or so, about a 10 to 1 difference. I'd think deformation of a sheet of Teflon woul
Bob, I know folks use vacuum variables at the feedpoint of verticals, but I don't understand why. It's a fairly low impedance (and therefore low voltage) point, isn't it? Wouldn't a hefty variable wo
Tom, et. al., A couple of field days ago we put up a tower with one of the anchors reeeeaaaalll far away: they guys on this side were very long. When we tightened all the guys, the long ones were "lo
Ed, Keeping the angle the same is a problem when you have more than one level of guys: either you go to multiple guy points or you have a different angle for one (or 2) sets of guys. -Rex Rex Lint, C
Jim, SB-220 is similar to Kenwood 922 - both use pi network. -Rex Rex Lint, Consultant 26 Brek Drive Merrimack, NH 03054 PH: 603-860-7651 Tim, I haven't done any measurements, but I did do a
I believe it's saying that at 70MPH, the tower will support 15 sqft of antenna/mast/whatever is put on it. Most antennas will specify effective "wind load" in square feet of "projected area." -Rex K
Both N6BV and K1VR wrote their experiences up in the ARRL antenna book. -Rex K1HI Rex Lint Merrimack, NH _______________________________________________ ________________________________
Be sure to get stainless! You don't want to have 'em rust and freeze up on ya'! -Rex K1HI Rex Lint Merrimack, NH The bolt holes are deep and would except a 1 1/2" long bolt, I have the
See http://www.kv1j.com/6BPF/index.html -Rex K1HI Rex Lint Merrimack, NH --Original Message-- From: towertalk-bounces@contesting.com [mailto:towertalk-bounces@contesting.com] On Behalf
I didn't see any shielded pantiliners. -Rex K1HI Rex Lint Merrimack, NH --Original Message-- From: towertalk-bounces@contesting.com [mailto:towertalk-bounces@contesting.com] On Behalf O
Jon, 25G is pretty tough stuff: The 12 Element teledyne is 11.7 square feet, and a 60 foot Rohn 25 will handle 20.3 square feet. THAT's not the problem! -Rex K1HI Rex Lint Merrimack, NH
Does more than a half-wave count as a single element? -Rex K1HI Rex Lint Merrimack, NH Anyone have experience of using a multi-band sloping Vee beam? In preparation for National Field D
As Jim wrote, the ANGLE the guy makes with the tower IS IMPORTANT. A thought experiment: put one achor out at 1000 feet and the other two in at 30 feet. The near ones are pulling almost straight down