Around here (near KCMO), It's called "Cell-core" Drain & Waste pipe. Not rated for pressure, like water supply lines, but low pressure D&W is what it was designed for. I use 10-ft lengths of it to su
FWIW...I've found that a sinker is hard to see in "dark" trees like pines unless I wrapped it in ordinary masking tape. Of course other bright tape would work too. ___________________________________
70 PSI. Yes, but look out! Some PVC pipes like Drain & Waste pipes are not rated for pressure. Just sayin'. 73, Charlie, N0TT http://akbeng.com/catalog/california.htmlhttp://akbeng.com/catalog/mainla
Benny, As you know, the BX towers and the 25's have totally different legs to clamp on the ginpoles. The tubing with the pully that goes into the clamping fixture is virtually the same for the two to
Rich, FYI...I used a bi-metal circular hole saw that uses a 1/4" pilot hole to cut some holes that were over an inch in diam through some 5/8" hot-rolled steel. I also cut some holes that were 7/8" D
Grant, I don't agree with all of that. I had no trouble sawing through 5/8" hot rolled steel and could have easily sawed though a thicker piece if I needed to. It took about 15-20 minutes per hole. Y
Mike et al.... To add to the collective knowledge about stubs, there was an article in QST years ago called (I think) "The BOA - a constrictor for unwanted radiation". :D) Just FWIW. ________________
Rik, I have a pair of "surplus" open frame type of relays, the type that was/is available on the surplus market and hamfests...has ceramic base, DPDT contacts with wide conductors spaced ~3" apart...
Hi Gents, Heh...heh...as usual this topic has taken a life of its own, but I'll add my few words to the vast knowledge base about radial wire... Years ago, I installed a 7mhz 4-square vertical. I won
Just a thought...I seem to recall that there was some info on a list about Cantenna oil that was posted long ago.... there were some recommendations for a type of automotive transmission oil as a goo
For insulators you might ask Galen, WB0W. He's been making insulators with his CNC lathe. www.WB0W.com _______________________________________________ _______________________________________________
Hi William, Yes, I did that this Summer/Fall, for a 7mhz antenna. Details, details..... I have a 70-ft BX tower and I installed 12 radials (taking Rudy, N6LF's advice) that are insulated from the tow
Gary, Some of my coax cables and control lines are in plastic conduit and I've never had a problem with condensate. I use 4" PVC, 200 ft run with homebrew concrete access boxes at the ends and one in
I once had a conversation with W2FMI (of the shortened vertical antenna fame in 1970's QST)...and I asked him that very question. He said "So what if it rusts? Rusty wire is far less lossy than the s
Hi Gents, Looking for suggestions for the materials to build a "permanent", self-supporting 40m vertical ~33ft high. Will use several in an array such as a 4-square. What has worked for you in windy
Grease in the *motor* bearings? I use 10w non-detergent motor oil there. Grease on the gears. _______________________________________________ _______________________________________________ TowerTalk
Gents, My 94-yr old Dad, who lives in Plymouth, MN has a US Tower (UST) Model MA550 e/w a motorized lift. The cable is broken and he needs someone to replace it and install new hardware associated wi
Heh...heh...well, I gotta jump in here after lurking in the background. I had a BN-86 go bad on TH7DXX (Ohhh sounds powerful!!) and I was able to get it's case open with a vise to hold it, a sharp ut
I still use 200ft or ordinary 8 conductor rotator cable that's been direct-buried since 1976...never a problem! Hy-Gain Tail-twister. 73, Charlie, N0TT _______________________________________________
Hi Gents, I'm planning to use single strands (i.e. half a pair) of the 2-conductor Military Surplus "WD-1a" wire for a lot of radials. I know that there are 3 steel stands and 4 copper strands in eac