If the cable shields are properly bonded to the tower at the top and bottom of the vertical run as they should be, if for no other reason than lightning protection, then it doesn't matter whether the
You're better off using lab-grade test cables with constant impedance connectors (N, SMA, TNC, etc.) and a precision cal kit to do the cal, and then use a high-quality adapter to get to UHF to conne
You should check with whoever issued your building permit to see what they want you to use. I've run into many inspectors who didn't want to see any kind of foreign material/items in the foundation.
Have you tried it and had a problem? We routinely cadweld all kinds of tubing a lot thinner than a 25G leg, such as fence posts, ice bridge posts, etc. If you're really worried about it, weld to the
The tower legs are embedded in dirt??? Whatever is buried in the earth will obviously a path to ground. But how ideal (i.e. low resistance) is it? Without measurements and/or real pre-construction d
In a nutshell, there's a lot of contact area between the legs where they mate, whether flanged, pin and cup, plate splice, or whatever. The combination of gravity plus all of the fasteners keeps tho
We use Nupla "nuplaglas" rods on broadcast towers. http://www.nuplacorp.com/guyrods.php I'm not familiar with Polyrod. -- Jeff WN3A _______________________________________________ ___________________
A few things to keep in mind about dead-end preforms if you've never used them before: 1. You use them once, and only once. Never, ever re-use a preform if it has been under tension for a significant
Right, although Penetrox does make a variant specifically for copper-to-copper: Penetrox-E. The run-of-the-mill Penetrox that you often find at electrical supply houses is Penetrox-A. Kopr-Shield (T
Tefzel cable ties. But be prepared for sticker-shock if you've never bought Tefzel ties before... :-) I'll echo the comments of others - for "regular" black UV-rated ties, Panduit, 3M, and T&B are g
If you can get a wheeled vehicle near the tower, I'd suggest a lull (telehandler). Even a small one will reach well above your 10-foot midpoint, and 1000 lbs is nothing. Not only will it get the towe
No. RFS/Cablewave S-FLC12-50J is 1/2" 'superflex', which is similar to Andrew/Commscope FSJ4-50B. The "S-" prefix in the RFS part number indicates 'superflex'. Note that RFS re-designated the "S-FLC
As others have mentioned, there are multiple type of coax that people call "hardline". While there is some inter-manufacturer connector compatibility for a given type of cable, generally speaking co
I don't know if I'd say that all Wellers are crap. Some of them are, some of them are quite usable. Are they in the same class as Metcal? Definately not. One of the most-used tools in the toolbag in
I've noticed quite a bit of variation in Rohn bolt kits over the last few decades. I've seen hot-dip galvanized with tri-loc nuts or other distorted-thread locknuts such as what you describe. I've s
Put a line filter on that problematic circuit, installed in close proximity to the breaker. Corcom is probably the biggest producer of line filters for EMI/RFI. They make many different models. Obvi
"Serving" is the word you're looking for. Rohn's serving tool was the CST1, but I don't think they still make it. Hubbell and (I think) Klein also make (or made) similar versions. Serving seems to h
All of the standard 65G guyed "catalog" packages come with a tapered base section for use with a pier pin. We have a 280 foot 65G at one of our FM clients' sites with a tapered base on a pin, and th
Look for old Cablewave "Taperlok" connectors that fit FXA12-50. -- Jeff WN3A -- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus _________________
That's not always practical for a top-mounted beacon due to the size. Also keep in mind that most ham towers have rotating antennas at the top, and it is very unlikely that a conventional incandesce