RG-8 style coax shields won't take much current before they melt, but as I mentioned, I have two runs of 1-5/8" heliax running between the tower and shack, connected to the tower ground system at on
Hill Radio supplied an ice sleeve for each of the 1/4" EHS Rohn Big-Grips I ordered for the leaders at the bottom of my Phillystran guys. Texas Towers supplied UV-resistant cable ties for the guy gri
change. I must respectfully disagree. I've had a C3E and an EF-420 for quite a few years and would, without hesitation, recommend the EF-420 over the C3E. It always seems like there's a lot more tha
I'm a little confused about lightning suppressor theory. Many of us have installed lightning suppressors from Polyphaser, ICE, K5FD, etc. to protect control lines running from towers to the shack. Th
If the antenna has a piece of mast serving as a boom strut support, the best way is to put the loop above the ring, not below. This requires at least three feet of tower above the ring (i.e., it won
Andrew makes hoisting/hanging grips for LDF5 and LDF4. I found the LDF5 grips on ebay for a reasonable price. Andrew also makes grounding kits for LDF5 and LDF4. I found them on ebay at reasonable pr
Hi, I'd like to hang a trapped 160/80 inverted vee off my 110' tower as a temporary solution for the low bands this year. The tower is on a steep hill and too far from trees for a dipole to be feasib
I use a Petzl Y-lanyard specifically designed for fall arrest (http://en.petzl.com/petzl/ProProduits?Produit=329&Activite=0#). It has two leads attached to a common shock absorber. Each lead has a la
I like the Petzl work harnesses. The design is excellent, they're comfortable, and generally lighter weight than other brands. The chest ring is used to attach an ascender / fall arrestor when using
Pete, A positioning lanyard shouldn't be used for fall-arrest. It has no shock absorber. If you fall and get pulled up short by the positioning lanyard, you could get seriously injured. Better to use
I've had mixed results with Hy-Gain rotor bolts. The bolts loosened up on one of my Ham-IV rotors that's mast-mounted on an AB-577, but stayed tight on another identical setup and on an identically-m
I use the Tower Jack 110VAC electric capstan. Used it for raising the tower sections, too. Very pleased with it. 73, Dick WC1M _______________________________________________ ________________________
I use a capstan mounted at ground level. The pull rope goes up the tower, through a pulley, and down along the tram line. What's wrong with that? Are you serious about putting the winch or capstan up
Roger, The primary mod is to strengthen the boom and elements. Try this link: http://www.qsl.net/k7vc/402cd.html. It's an article by Dave Leeson, W6QHS, on strengthening the 40-2CD. It's pretty exten
I live in West Central NH, a semi-rural area. The cost of my Rohn 55G base and guy anchor footings was about $2,000. However, I built to the Rohn 110 MPH spec, so the guy anchor footings are twice th
Hi Ward, Depends on the reason for the pigtail, but in many cases you can avoid the pigtail by using a commercial current balun. That works well for most wire antennas, as well as most yagis that hav
Hi All, I have a strange problem with my Cushcraft 40-2CD. The symptoms are: - The first time I select the antenna and transmit, say at 50W, the SWR is very high -- somewhere between 10:1 and infinit
I don't doubt it, but wonder about the practicalities. My cables run down the inside of the tower. That wasn't in hopes of creating a Faraday shield, but because I have three TIC rings on the tower
Joe is on target here. Business valuations are a significant part of my professional work. Most of what I do concerns venture capital investments, which are often more of an art than a science, but I
I didn't say that. I said, given what we know, the valuation falls into a certain range. It could certainly be lower, as I indicated. If so, the ROI could be higher. We don't know the earnings and we