Thanks, Tom-- Pretty much what I figured, and saves me the hassle of doing the tests. Even saves me the hassle of finding my Loos. Confirms that nothing beats my Dillon series dynamometer! But this d
And RG-213 is 0.405 in dia Pretty close. --John _______________________________________________ See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather Stations", and lot's mor
Bill, go to this site and do the pull down menu "Search By Name". There are a LOT of Phenolics, BTW, this site shows close to a dozen. http://www.professionalplastics.com/cgi-bin/main/co_disp/displ/p
WHAT???? The ONLY way the mast CAN bend is by the force of the wind on one end and the opposing force of the tower (and therefore the roof) on the other end. --John W0UN ____________________________
I have four, 120 ft Class 1 Western Red Cedar poles in Colorado that are stepped and are on the ground. I would sell them for a LOT less than$10,000K. These were used for a few years on a US governme
I have been looking at a number of modern materials for antenna and tower applications and there is a confusing array of different variants of the "plastics" family. I have found two useful sites for
Assuming you mean nylon slings there are a lot of options. I even saw some on sale on Tractor Supply Company the other day. Another way to make one in a pinch is to buy bulk nylon webbing from places
My radials are usually heavier wire, sometimes copperweld with its springiness and memory. So when I needed staples that would not rust (heavy ones for a drip irrigation system and light ones for rad
It is my understanding that the bending radius quoted in the spec is the tightest you can bend it in a permanent installation and the tightest you can put it on a reel. There are two issues here (at
Steve--for some reason the 40-2CD is not in the Cushcraft manual archive nor is it on the BAMA site. But K0TO has put up a copy and the file can be downloaded from here. <ftp://mirage.skypoint.net/p
http://www.pi4cc.nl/tech-info/ and <ftp://mirage.skypoint.net/pub/members/t/tao/docs/40-2CD.pdf>ftp://mirage.skypoint.net/pub/members/t/tao/docs/40-2CD.pdf are the same manual with the same hand-writ
Mike-- Max-Gain has 7/8 fiberglass rod for $20 for an 8 ft length. Being a DX station and him being a ham he may be willing to cut some for you or he may have some scraps. http://www.mgs4u.com/fiberg
I have often been asked where to get a copy of Laport's Radio Antenna Engineering. A classic antenna book, published in 1952 by McGraw-Hill. Edmund Laport was chief engineer of RCA's international di
Hi, Bob-- Height may be an issue to some extent but I can confirm that plastic jacket house wiring will lower the frequency as well due to its effect on the velocity factor on the wire -- just as coa
Might raise some suspicion in MN or ND. _______________________________________________ See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather Stations", and lot's more. Call
Actually I think optimizing them with modern NEC-based tools is worth the effort, especially if you really want to achieve the promise of the dual-driven elements. While you won't get a lot more gain
Improved KLM 6L20 dimensions. Better gain, F/B and especially VSWR bandwidth. I have not yet found the YO model information but here are the actual dimensions that I used on my two 6L20M KLMs, but I
Bill-- Sounds like it might be an old W0MLY switch with a Ledex drive. The "motor" is a Ledex mechanism that jumps to the next position when it is hit with a voltage. The phenolic switch is what cont
Mike-- Ham magazines other than QST tend to be "labors of love" of one or a couple of individuals. Circulation is just too low to support more than a couple key people. Ham Radio Magazine was Jim Fis