Bill, I think you're looking at some incorrect claims (2 el SteppIR perhaps?). Here are the results of a comparison between the ASL2010 and 3-el SteppIR in AO. The Cushcraft half elements were offset
Reyco (W2VS) traps are available from AES (www.aesham.com) or Radio Bookstore (http://www.radiobooks.com/products/kw80c.htm). The Reyco traps are rated for significantly more power than the Spiro tra
Bill, A 204BA with N6BV dimensions (ARRL Antenna Book) is hard to beat when considering cost, size/weight, reliability and performance. 73, ... Joe, W4TV _____________________________________________
Gee, Pilots can have their heads up their backsides too ... Did anyone every consider that the KFI tower probably predates the Fullerton airport and certainly predates any runway expansions or noise
Jim, The only problem with a fixed length vertical and adjustable matching system is that the take off angle goes up in a hurry. Last I looked, the TO of a ground mounted 33 foot vertical on 21 MHz w
I don't think on half wave is the real problem point ... you could go as much as 20 or 21 feet (5/8 wave on 10 meters). That's the point at which the higher angle lobe begins to predominate. At 21'
Not this crap again! Time to write not only the FCC denouncing the "bird kill" stuff as a hoax (which it is) but write you Congress critter and point out that birds are regularly killed from flying i
They don't even get "piles of bird carcasses" around 1000' high midwestern TV towers. I spent 15 years around a 1200' TV tower - with strobes - us outside Columbus Ohio through he 80's and most of t
As a student of history I find your comment completely ignorant. The elimination of effective licensing requirements destroyed the Citizens Radio Service in the late 70's and early 80's. With US Ama
You are already seeing the "benefits" of the relaxed examination requirements. It has been at least 15 years of the volunteer examiner program, published question pools with answers that encourage m
Yes, the discipline to learn CW at 20 WPM 30 plus years ago when I hated it made me a far better operator, ham, and person than the ability to memorize my way to an Extra class license as it would b
I'd suggest 38' or 48' of the tower with a shorter "whip." It still works with a single set of guys at 30 or 35' - the whip will be stronger (two 12' sections of tubing, double or triple walled if ne
The K9AY can be "fixed" if you are willing to use additional supports to make the loop square. The high angle response is due to the sloping "verticals." However, given the performance of the whip 4
In fact, I use a K6SE "flag" in my modeling. It has the currents in the top/bottom wires out of phase which results in the null (or a substantially reduced response) at the zenith. A design that get
Tom, A single band vertical Zepp is called a J-pole. Once you move away from the single band matching system and end feed the stub, the take off angle goes up and most of the RF goes right through th
John, The question was in regard to the "Six Switch" not the "Double Six Switch." The Six Switch is a single radio (6 x 1) switch not a two radio (6 x 2) switch. In other respects they are very simil
Steve, HFTA and AO show rather good results with 40/80 or 50/90 foot stacking. The 40' spacing improves performance slightly on 20 meters and does not overly impact 10 Meter performance - particularl
While that may help somewhat, it is not a cure-all. WWVH had to put radial fields under their VERTICAL DIPOLES (bottom ends a foot or two above ground) because of the ground losses from coupling hig
The only concern I would have is if you are shunt feeding the tower with that antenna. All elements on the X7 appear to be insulated. This makes the only connection to any elements through the balun
Quite to the contrary ... there are mechanical issues with all other antennas - just different issues. KLM antennas were notorious for problems with the capacitor sections, shorting straps and phasin