OK, thanks Perry! The *insulation* is the size of seven measured together is the ~size of #19 AWG copper (if a person could ever want or even buy those sizes...hi hi). _______________________________
Gents, I'd like to build a 40m phased array "inside" my 160m receiving-only 9-circle and I want to check for any interaction between the two antennas. I have the layout in EZNEC 6, but I'm not sure h
OK, thanks Gary and Tom. I haven't been back to my modeling computer for a day or so. I think I get the idea now that I should try 3 configs each with the 7mhz and 160m antennas (6 configs total) and
Gents, About on-the-ground radials for vertical phased arrays...some "instructions" have said to connect the ends of the radials to a "buss" that (more or less) divides the 4 elements in say, a 7mhz
Greetings and thanks to all that responded to my question! Gosh, there's a lot of arguments, pro and con about intersecting wires, soldering, insulated or not!! And then added to the mix are elevated
If memory serves, all of the files that were on the Wayback machine have also been removed or made not available. Book burning! _______________________________________________ _______________________
I would think the epoxy is used to keep water out of the hole if it is subject to freezing. Charlie, N0TT _______________________________________________ _____________________________________________
Comment below! Yes, some tall covers so that climbing is next to impossible...made from 1/8" or 1/4" tempered hardboard soaked down good with coats of Thompson's Waterseal, hooks at the top to slip o
I wouldn't put in a wood post surrounded by cement. Eventually, the wood will shrink, letting in and trapping water, which will rot the post in a "short" time. WB0W makes insulators for tower bases.
Here's another version of a launcher, sold by the Joplin (Missouri) ARC: http://joplin-arc.org/?page_id=84 _______________________________________________ ____________________________________________
I use one similar to that #34406. The only problem is that mine takes two hands to *shorten* the lanyard...kinda PITA when climbing a BX tower. Charlie, N0TT _________________________________________
Rich, just FYI...the latest QEX mag has an article about sealing coax connectors....very interesting. It says, tape alone doesn't work to keep water out 'cuz water migrates along where tape overlaps.
Well, I don't chime in very often, but I will this time...I think Jim K9YC was just being through with his answer and wanted to educate folks, esp any new hams on the list....simple as that. Tom W8JI
I think I saw that attacment method on W8JI's website. 73, Charlie, N0TT _______________________________________________ _______________________________________________ TowerTalk mailing list TowerTa
Hi Gents, (also copy to W1MK) I'm using the "w1mk-on4un-oh1tv-arrays.xls" program to calculate the Mutual and Array Drive Impedances for a large phased array. It's a program available on the CD that
I've wondered about that myself RE the vertical on a slope. I did a quick model of a 40m vertical that is leaning 45 deg over flat ground. If the vertical is say, leaning toward North, the elevation
Hi Brad, I too had that same buzzing problem after I replaced a quad antenna with a yagi. (What the change had to do with the antenna swap still baffles me.) Anyway, I solved the buzz by isolating ("
Hi Gents, Phased arrays and other multi-element antennas usually have a "negative" input resistance on at least one of the elements like the reflector. The negative resistance is the "real" part of t
Thanks very much, Rick! I've printed out that info and I'll study it carefully. 73, Charlie, N0TT _______________________________________________ _______________________________________________ Tower