Paul: Must the material be metallic? If not, you might want to consider simple fiberglass insulation batting. (I'm assuming you want the material to plug the PVC where coax cables emerge.) I used ins
TT: FWIW - At each of the cellular tower sites we built for the wireless project in Haiti five years ago, we also constructed a live-in guard shack. The 24X7 guards were armed with scatter guns to ke
Peter: With limited time and already-installed Yagis, let me give you three suggestions to consider for 40M: 1. Shunt feed the tower on 40M; 2. Hang a half-sloper wire (33.5 feet long +/-) off the to
TT: As I've said here before, on towers as in driving a car, ther are no such things as accidents. (Rocking the upper towers sections loose like that has got to be the ultimate in lunacy.) 73 de Gene
TT: Here's a posting on the subject of Yagi(-Uda) antennas that I made back in 2003: http://lists.contesting.com/archives//html/Towertalk/2003-01/msg00215.html . Appropos yet a bit tangential to the
TT: While researching the topic for a work-related project, I ran across this grounding and bonding spec for use in rural telephone service facilities: www.usda.gov/rus/telecom/publications/pdf_files
Alan: My comments embedded below. 73 de Gene Smar AD3F Electrical power circuits MAY not be run (not permitted) along with control wiring and coaxial cable, per National Electric Code. It's also a go
TT: I have several of those mast sections and the bottom of the next upper section is smooth. That is, the splines from the lower section do NOT engae matching splines above them. See http://cgi.ebay
Noid: Running a copper strap from inside to outside of a residential structure isn't going to be pretty. It isn't even done in commercial installations that I've seen. Let me suggest you run two beef
Doc: I would advise against leaving the cable reel in a visible spot on your garage floor if you leave the doors open to the street. In my neighborhood, we've had a rash of robberies of such visible,
Dick: I found a few white papers on how the Polyphaser, ICE and Delta lightning supressors work and posted about it: http://lists.contesting.com/archives//html/Towertalk/2006-03/msg00548.html . Enjoy
Peter: I bought mine from The RF Connection ( http://users.erols.com/rfc/cadweld.htm ) near here in Gaithersburg, MD. I think Joel will ship this stuff to you. 73 de Gene Smar AD3F __________________
TT: I'm sure it started out as a handful of iron filings, just like all good towers. 73 de Gene Smar AD3F _______________________________________________ _____________________________________________
TT: I found this URL http://local.live.com on this evening's ARRL Contest Rate Sheet. If you plug in my address (below) you'll see an initial aerial view of my house, including the Trylon tower, Benc
Jerry et al: Such antennas (low to ground, high angle radiators on bands up to around 10 MHz) are more commonly know as NVIS antennas (Near Vertical Incidence Skywave.) There are quite a few referenc
Cameron: It could be a Rohn/Spaulding BX model: http://www.antennasystems.com/bx2.html . Rohn bought the design from Spaulding approximately a while ago. If you determine that your tower is, in fact,
Jack: I have four type 44AU connectors that I bought over five years ago when I was accumulating parts for my tower and antennas. I never did get to buy and install the half-inch hardline run, so the
Scotty: Do NOT use the rebar in the foundation hole as an anchor point for your rebar cage. The ends of the rebars sticking into the dirt will eventually corrode and follow the rest of the rebar into
Keith: I have no experience with a foundation failing due to corrosion of the rebar. However, I based my advice on the following postings, among others, that I've read here on TT over the past 8 year