Hi, Anybody have a source for T6061 3/8" 1/16 wall aluminum tubing. Or a likely place to call. The closer to Raleigh the better. Can make do for WPX with about 5 foot piece. Anyone have some lying ar
Many thanks for the quick responses all. Stuff already arranged from Texas Towers, as advised by some ten responses. By the way, the Great Kitchen Project (since 9/98) is now officially war-departmen
Not to argue with any of the excellent points posted previously, but this subject really is one of those YMMV issues. One really needs to think through the particulars of one's own situation and see
When the half antenna was hanging by the coax, exactly what on the antenna end was transferring the support to the antenna? Lots of black tape, or possibly the coax PL259/SO239 at the B1 balun? If so
RAA16758 Sender: owner-towertalk@contesting.com Precedence: bulk X-List-Info: http://www.contesting.com/towertalkfaq.html X-Sponsor: W4AN, KM3T, N5KO & AD1C radiate It's just another conductor in the
Remembering that the only element on a yagi which is actually resonant at the operating frequency is the driven element (all the others are long or short)... If you are only going to have 20/15/10 at
Just exactly what I would have done. Dippers may be a pain, but they certainly can confirm the [octave, order of magnitude, general neighborhood, approximate value] of a capacitor or inductor. It *w
Are we assuming that all these insulators are alike at RF? Since they are manufactured en masse by umpteen manufacturers for power poles, likely (??) without regard for RF characteristics, why shoul
SAA07882 Sender: owner-towertalk@contesting.com Precedence: bulk X-List-Info: http://www.contesting.com/towertalkfaq.html X-Sponsor: W4AN, KM3T, N5KO & AD1C Well, I might agree with you if it was the
If the ladder line is 450 ohms, and well matched at the operating frequencies, Palomar makes a nice 9:1 transformer that goes balanced 450 to unbalanced, I think three 150 ohm lines around a core. In
Picture worth a 1000 words. See http://www.qth.com/force12/zr.htm 73, Guy --. .-.. Guy Olinger, K2AV k2av@qsl.net Apex, NC, USA -- FAQ on WWW: http://www.contesting.com/towertalkfaq.html Submissions:
It turns out to be somewhat less than twice the impedance of the lines taken separately. Double 75 coax used as a balanced feedline was called 130 or 135 ohm at AT&T. Someone know the reasons why? (W
LAA01267 Sender: owner-towertalk@contesting.com Precedence: bulk X-List-Info: http://www.contesting.com/towertalkfaq.html X-Sponsor: W4AN, KM3T, N5KO & AD1C A good rule for short as explained below i
I know that stuff too. In an analog LD switching office there were tons of it at the channelbank/group level. 135 ohm shielded twisted pair. But what I was talking about was two pieces of coax held s
Hmmm, Boom length X weight? Not too bad really. Obviously a worst case approximation, but not so bad. Assume that the weight is distributed over a square that is the boom length on each side with the
I don't think I missed the point. True, I didn't use the term mass. True, weight is felt down. My 2 year old grandson knows that. Weight is *mass* felt down because of the acceleration necessary to o
On Tue, 02 Mar 1999 09:18:54 -0500, Tom Rauch <w8ji@contesting.com> wrote: Yup, if we're talking about the high end. More inclined to accept your point on the high-end stuff because of the methods us
Glad to see you're still out there hiding in the weeds... An interesting observation of mine is that although *writing down* these discussions can be difficult, just about all the hams I know underst
On Tue, 02 Mar 1999 00:54:28 -0800, Kurt Andress <K7NV@contesting.com> wrote: Well, no... Do you have any idea how many people read this reflector? I have had people I never met before walk up to me