I have owned crank-up towers for close to 40 years...in multiple locations and using multiple types of crankup towers (Heights, Hy-Gain, US Tower). I still own 2 crank-ups. In all cases, I just let t
Larry: Interesting. Thanks for adding your perspective. I would never raise/lower the tower remotely. I would not be so concerned about coax as I would be about kids (mine are grown, but you never kn
HI Barry...long time no see! For those of us without this experience, please explain how a "stiff" piece of coax enter between the zig/zags on your crankup. If I have a 10 foot length of coax and hol
Being from the non-high deserts of NJ, I am just taking a shot "in the dark" (har har). Check this out (100 feet by 3" OD): http://www.homedepot.com/p/Advanced-Drainage-Systems-3-in-x-100-ft-Corex-Dr
Hi.... I work in hospital administration. My ugrad degree is in Biology and my masters degree is in healthcare administration. In other words, I'm no engineer. However, I took a look at Mikes home pa
Interesting comments. Contributor A says the SWR will be 2:1 while Dan says 1.5:1. I agree with Dan. Contributor B says, "What if the impedance at the antenna is only 33 ohms.... and you have a quart
Well, the prompting question (Subject = RG-149) was posted on Dec 12 by VE3YF. He wanted to know about RG-149. My comment questioned whether or not 50/75 Z line even mattered. After lots of great dis
Wow..those photos bring back lots of memories from the late 60's/early 70's.. I had an aluminum (Heights) crankup tower (84 feet?). I noticed some "rust" one year and pulled out the bolt that came wi
Hi all, http://www.ustower.com/wp-content/uploads/2014/05/TX-472.pdf I am wondering about the spec for 200 pounds of antenna weight. Can someone with some engineering background/experience please rev
Thanks Matt, Yeah, I saw the safety factors for the *cables* on page 7. But I wonder if the cables are really the "weak" point or if the *pulley frame assembly* is actually weaker. Any way to know?
Thanks Jim,Interesting take on the 200 pounds of antenna weight. I'm not concerned about knocking the tower down laterally, I'm just interested in the dead weight lifting capacity.You say that if th
With proper placement, these are great for keeping birds from landing on surfaces. TIC de Doug KR2Q _______________________________________________ _______________________________________________ Tow
I was recently stated here that: [snip] With a number of samples large enough to be statistically valid a single, significant outlier, be it high or low can substantially skew the median, but have li
K8RI replied: [snip] That is true for small samples, but not those large enough to be statistically significant. The larger the sample, the more accurate statistically. [end snip] Roger: This (above)
I bought a crimping tool from Grainger several years ago. I had lots of cable to redo. I used it on my HG54HD and TX472. I'm not at home so I can't check, but it was a big moose and not inexpensive'
Over the years, it seems that most antenna manufacturers have moved to using some form of Nylock nuts (the nuts with the nylon insert for "high vibration" applications). I have seen this on my Cushcr
I've received several replies so far and thanks to all for those. I guess that I need to specify that in this case, I am referring to the SteppIR antenna. It uses Phillystran for the boom truss and D
I would be concerned about the interaction with 15m too. Your approach seems like a lot of work. Have you considered mounting it on the mast, but parallel to the boom? I did this with a TH6DXX in the
I googled your QTH and the QST article antenna probably won't work in your situation since your roof tower is way too short and the "dangling wires" will hit your house. Since you are a real ham (IE,
If you're going to play with big antennas, you need a big tower to hold the big rotor. I don't remember what this one is, but I know Frank LPL remembers. I know it is a HyGain. Something like 3501 (?