Copperweld? RF Connection describes the center conductor as silver-plated solid copper, 18-gauge. With the teflon dielectric, is cold flow really an issue? I know it is with foam, but thought the har
Good info, Bob -- Pasternack has the RG-400 for only a little more than the RG-142B/U, but you have to persuade them to honor their special sale terms of a $25 minimum purchase and free shipping -- g
I, too, remembered that from W0UN, whose engineering expertise I respect mightily. Yet the Polyphaser people go to great lengths in the "Grounds" book to challenge the idea that anything can deter a
A third option, suggested to me by W8JI, is to ground the centers of the elements through inductors that are large enough to be effectively open circuits on 40, thus avoiding any serendipitous creati
A couple of thoughts -- there are wire "staples" made for holding down landscape cloth that are ideal for this-- you can buy them in boxes of 500 or 1000 from suppliers like AM Leonard. With a bow to
You don't suppose it's possible that Rohn was playing CYA, do you? 73, Pete N4ZR The World HF Contest Station Database was updated 9 May 03. Are you current? www.pvrc.org/wcsd/wcsdsearch.htm
Well, I used the "sight through the tower" approach. Of course, this was compromised somewhat when the backhoe for one of the guy anchors broke through the septic drain field. That anchor is more or
I would definitely go with the horizontal loop under 1/2 WL in height. 73, Pete N4ZR The World HF Contest Station Database was updated 9 May 03. Are you current? www.pvrc.org/wcsd/wcsdsearch.htm
What's wrong with a bucket truck? A little shopping around can get you one fairly cheaply on weekends. 73, Pete N4ZR The World HF Contest Station Database was updated 17 June 03. Are you current? www
For that matter, you might consider painting the entire antenna, mast and tower a low-visibility color. If a tree background, a dark grey-brown would probably be good, or if a sky background. conside
Unfortunately, this isn't the whole story. I can see the 3/16" EHS guys on my tower from over 200 feet away. Super good eyes? Nope -- it isn't a matter of your eye actually being able to resolve the
Ain't that the truth, Jim! 73, Pete N4ZR The World HF Contest Station Database was updated 17 June 03. Are you current? www.pvrc.org/wcsd/wcsdsearch.htm
As an alternative to the bonding process, I laid 3 125-foot radials right on the galvanized 30 x 40 foot garage roof under my Butternut HF9V. I'm not sure whether this is theoretically enough couplin
Steve, I hope you are not suggesting that people not post about antennas, matching, feedlines, etc. on towertalk. To my mind, this reflector has profited greatly by being the premier location for tow
No, happily. This is characteristic of this particular virus's design. It takes part of a real message received by the infected machine, modifies the sender's address to substitute a different ISP, a
A couple of weeks ago, I laid down two runs of CAT-3 computer cable from the house to the tower for a new antenna switching system. I was out there yesterday after the rain stopped, and discovered a
Thanks for sharing all the anecdotes, guys. Guess misery loves company. 73, Pete N4ZR The World HF Contest Station Database was updated 17 June 03. Are you current? www.pvrc.org/wcsd/wcsdsearch.htm
Interesting thought. There's something sold in the farm supply stores hereabouts called Bat Scat, which is supposed to be an all-purpose rodent repellent. According to the label, it is basically some
Hi Jaap -- There are a few other things you can do, but of course all of these involve trade-offs of one sort or another, in performance, effort, or cost: Paint the beam and tower to contrast as litt
This is intriguing. I note that in his book (page 7-19) ON4UN advocates using two 100-bead chokes located at least 5 meters from a Beverage feedpoint, with the shield of the coax grounded between the