Other than the box of them I have, I can't really say! Don N8DE _______________________________________________ _______________________________________________ TowerTalk mailing list TowerTalk@contes
Steve, Have you checked to make certain there is no low impedance path from the element to the boom? There should be infinite resistance, as they are insulated from each other. Any possibility someth
I use foam rubber balls [with a happy face on them] place INSIDE the end of the boom. Usually available at 'Dollar' stores for .... a Dollar! As for the element end caps .... here I go again : Silico
Here goes N8DE again ... recommending SILICONE SEAL to coat the metal for rust prevention. _______________________________________________ _______________________________________________ TowerTalk ma
Copper is very expensive at this time. I'd go for galvanized mesh wire fencing [chicken wire?] .. quite inexpensive for a roll. Make sure it's WELDED BEFORE galvanize, ir the 'joints' will be 'diodes
From Table 8, Page 11-23, ARRL Antenna Book, 17th Edition Element Spacing Element Tip Refl: 0.000 54.500 DE: 85.000 50.125 Dir 1: 72.000 61.500 Dir 2: 149.000 50.125 All dimensions in INCHES. Don N8D
Some of the OLD Ham-XX rotors only used 7 of the 8 wires. Check www.rotordoc.com for full info. Don N8DE _______________________________________________ ______________________________________________
Slight correction, Gene. The LPDA is at LEAST a two-element radiator. On some frequencies [at or near the mid-point of its design] it will approximate a three-element beam. This is because at least o
Watch out! Here comes that N8DE guy with his favorite answer: RTV Silicone Seal. Use the stuff made for aquariums, it cures without all the acidic problems. Don N8DE _________________________________
What you have is the OLD, light-duty Heights tower. Take all the sections to someone with TIG-welding know-how and get ALL the welds checked and redone INSIDE and OUT. Just a word to the wise. Don N8
My 40m, 3-el vertical array has 60 34' radials under each vertical. My 80m 3-el vertical array [to be erected SOON] will have 60 75' radials under each vertical. You do the math. Don N8DE ___________
I'll second Bill's suggestion with this addition: use old sindow sash weights. Don N8DE Quoting Cqtestk4xs@aol.com: _______________________________________________ ___________________________________
Seems no one quoted the K7LXC Directive: Don N8DE _______________________________________________ _______________________________________________ TowerTalk mailing list TowerTalk@contesting.com http:
My 80m vertical (going up within the month) will be 60' of aluminum tower with a 4' piece of 2" tubing extending from it. It will be insulated from the base using three pieces of solid fiberglas rod
Of greater concern is the moisture which might/WILL be trapped inside. If you can find some silica-gel pacs, put them inside BEFORE you do any 'sealing.' Don N8DE ____________________________________
While you're doing that, James, stop and help me, too. Don N8DE Edmore, MI _______________________________________________ _______________________________________________ TowerTalk mailing list Tower
Both designs should be fed with open-wire line, though a Sterba curtain MAY be fed at a corner point or the center of any section, but this will distort the pattern slightly. Find a copy of the ARRL
I just love 'advertising lingo'. 10 times lighter. ONE time lighter means it weighs NOTHING. I'll see if I can think how it can be -9 g. Don N8DE Quoting Terry <terry@kk6t.com>: _____________________
You're absolutely correct with your analysis. Now, Joe, let's leave Catholocism out of this discussion. I attended many forced masses. Don N8DE _______________________________________________ _______
If the tower is 128 feet tall, just connect the center conductor of the coax to the tower and the coax braid to your radials. If the tower is NOT 128 feet tall, you will need a matching network. Lots