Gents: When I worked for an electric utility in PA back in the 80s, our Sr VP in charge of coffee and donuts asked us in the R&D group to look into using this http://www.piasecki.com/heavylift_pa97.p
Paul W9AC: For your particular path (12 miles at 2.5 GHz) the freespace (LOS) path loss would be about 126 dB. I used one of several available online path loss calculators. You'll have to plug in thi
Donna: On the other side (the carrier's) of the coin, they'll probably want 24-hour access and a commercial power source as heavy as, or heavier than, your home's, plus a BAG (.... Generator.) Your i
While I was with BellAtlantic Video (FiOS predecessor) in mid-90s, we did the balloon thing for our planned satellite headend facility's parabolic antenna. The thing is, the balloon never floated str
TT: I looked at the calendar and saw that it was 50 years ago this evening that I sat down with my Elmer and took my Novice Morse Code test. I posted on this subject a decade ago at http://lists.cont
William: I use both shunt feed on 160M and reverse-feed 1/4 WL wire (sloper) for 80M on the same tower. However, I have a ten-element Yagi atop the tower and I have grounded all parasitic elements on
Patrick: I recall a wise man once admonishing us, both here and in his book, "Up the Tower" (which my kids got me for Christmas and which I wish I would have bought before I constructed mine), " DO w
Dee-Dub: When I was a Novice licensee and dreamed of building a cheap quad (which never happened), I read of using bamboo poles as spreaders. The intent was to wrap each pole in fiberglass tape to im
Kris et al: I've often wondered the same thing about John's books: Where did he get all the equations? I don't recall seeing references listed. 73 de Gene Smar AD3F Partic, It's the same Brewster's a
Rick: Thanks for reminding me about my favorite course in college: Filter Design. I truly enjoyed that course because I understood how to use the prototype designs to develop the response I needed, t
Doug: Wire-based antennas like the one you're proposing (and like the ones I have off my tower) are cheap. Build it and try it. You can always reuse the wire from the radials. As another suggestion,
Roger: My comments embedded below. 73 de Gene Smar AD3F So how do you pick the feed point and radial heigh*t? AD3F: The article gives some detail about how to estimate the amount of extra height vari
I would suggest a high quality or bronze banana jack and plug set for each end. They're self-wiping. Put the plug on the extension wires. 73 de Gene Smar AD3F -- Original message -- From: CJ Johnson
I have a Cushcraft D40 at the top of my mast. It's 42 feet from tip to tip. 73 de Gene Smar AD3F -- Original message -- From: Eric Rosenberg <ericrosenberg.dc@gmail.com> Date: 04/27/2016 11:25 PM (GM
Don: Call Joel at www.therfc.com and tell him what you want. He'll fix you up. 73 de Gene Smar AD3F -- Original message -- From: Chuck Dietz <w5prchuck@gmail.com> Date: 05/06/2016 3:22 PM (GMT-05:00)
www.therfc.com . Joel also sells connectors. 73 e Gene Smar AD3F --Original Message-- From: TowerTalk [mailto:towertalk-bounces@contesting.com] On Behalf Of Chuck Dietz Sent: Thursday, May 12, 2016 6
Jim: I've read on this and Topband reflectors that maybe 5 feet of separation between tower and vertical wire would be sufficient. However, consider shunt feeding your new tower on either or both ban
TT: The comment about work being done today by machines that used to be done (mostly) by men reminds me of my trips to Haiti when we were building its first wireless network in 1999-2000. I saw sever
Vic: The 259 analyzer is affected by mf and hf sigs and mfj sells an outboard tuneable filter. Check to see if their filter covers vhf as well. 73 de Gene Smar AD3F -- Original message -- From: Victo