Robin: You might be able to obtain such info via SATERN (Salvation Army Team Emergency Radio Network) on 14.265 MHz, or Hurricane net on 14.325 MHz. 73 de Gene Smar AD3F know Weather Stations", and l
Bill: One place to get it (but I can't attest to cheapest) is Texas Towers. I bought a few sticks of munimula a couple of years ago and didn't wince at their prices. 73 de Gene Smar AD3F scrap pile.
TT: Here's another from local television commercials: Save up to fifty percent or more! (And I'm finished with off-topic postings on this subject.) 73 de Gene Smar AD3F Weather Stations", and lot's m
Rich: Here ya go: http://www.sabrecom.com/tm_05products_6hfa.aspx . 73 de Gene Smar AD3F Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions and ask for Sherman, W2FL
TT: I found this URL (among others) with a Yahoo search for Smith Chart: http://www.web-ee.com/primers/files/SmithCharts/smith_charts.htm . Look at Fig. 8 to see an example of a constant VSWR circle
Tom et al: Rat cheer: http://www.arrl.org/news/stories/2004/10/14/1/?nc=1 . 73 de Gene Smar AD3F Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions and ask for Sherm
Craig: I have my switch at the base of my self-supporting, non-crank-up tower. The location makes it easy to get at the switch to add antennas or change them as I build new ones. Plus I shunt-feed my
grow and Amen. I have almost a half-mile of scrap radial wires of various composition in the grass around my front and side yards. Been there since 1998 160M season. The only visible radials are the
Kelly: You are correct that constructing a self-supporting tower close to a home's foundation is cause for concern. The forces impressed upon the antenna find their way to the foundation and to the s
Rob: Nope. Now for the clarification. I had a full WL 80M horizontal loop at this QTH for nine years. After about five years I got interested in Topband and installed an inverted L over top of the lo
Tim: Welcome to the reflector, one of the most informative in all of Internet-dom (?) As a Novice ham operator back in the 1760's, when we used to work late night DX by candlelight, I had a three-ban
Jamie: What has been suggested here from time to time, and what I did on my own tower, is install a second bearing plate below the top one (kind of where your rotator plate is now). On this second be
Craig: Tower Rule of Thumb: You can never install too big a conduit. (This is similar to: You can never have too many antennas.) I'd recommend not designing your conduit system for what is known, but
Al: For improved top loading it is necessary for the parasitic elements of a Yagi to be shorted to the boom. About three years ago there were a few postings here regarding exactly that. In the summer
TT: The oval-shaped gizmo Dick's referring to is called a service entrance weather head. Just in case the guy at the parts counter needs an explanation. 73 de Gene Smar AD3F Another approach for the
Tommy: How 'bout a weight on a pulley at the far end of the sloper wire. 73 de Gene Smar AD3F lower the rust-resistant, Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any ques
Rob: The SWR specs for the D-40 in real-life compare with the specs in the brochures. When I installed mine, I set the tip lengths for 7.090 MHz per the instructions. After I got the antenna onto the
TT: I have a Bencher Skyhawk with the older open sleeve feed system (similar to F12's. Ahem!) Both F12 and Bencher Yagi's have available a set of phenolic spacers that keep the DEs in the same spatia
Ted: At 24-48 hours it may be OK to bolt the tower to the concrete base, but don't crank up the tower to its raised position. The concrete takes a while to cure to its ultimate strength. The last tim
TT: There was an interesting (to me) article in the August 1998 issue of IEEE Spectrum magazine about the continued use of vacuum tubes in high-end audio equipment and musical instrument amplifiers.