Hi, off soon abroad and will be taking the 5 band beam. As regards tuning, how much will it re-tune up the band, (so I'm told) when you raise it from tuning...
I was just going thru the antenna model of the 3band version, and i think there is a problem on the 20m director. Backround: I calculated the velocityfactor...
Hi Torsten, I see you are in Texas, so presume you are English speaking. Pick up the English version of the manual and read pages 29 and 30 if you are...
Hi group, I've been given information that the HD-73 is derated from 10sq ft wind load down to 5sq ft wind load when it is mast mounted, that one should only...
You want to be very careful mounting the HD-73 without either a cage or in a tower if you live in an area with strong or gusty winds. In a low wind or...
Hi group, My Spiderbeam is on top of my roof. The roof is made of wooden plates/sheets, covered by bituminous material on the top, and heat isolation on the...
Frank, I have had that problem with every beam I ever placed on top of the house. I have never tried my Spiderbeam on top of my house. It's so light, I just...
Hi Frank, sometimes it is hard to tell is it Spiderbeam or push-up mast vibrating. Most times answer is : the combination of two. in general when pipe vibrates...
Greetings, Frank ! That's an interesting idea. Surely one could remove the end-cap from each arm, leg, or whatever it is of the spreaders & simply poke or...
Guys, Before you go adding rope inside the tubes, think about the additional weight when it gets wet. Remember, there is only a cap on one end. 73 Rick, DJ0IP ...
Hi Frank, I use roof towers on my main house and the garage. Vibration in wind was a real problem until I removed the blocking between the stringers in the...
Hello group, Consider the following picture: http://www.universal-radio.com/catalog/hamrot/4230.jpg The picture describes 3 different ways of installing...
I'm planning to move my SpiderBeam to the roof. I'ts the HD 5 bander and using the 33' HD mast. I don't have any information on how far out from the base the...
The guying information is logical. The method I will describe below is for the 10m HD mast, but the same methodology may be used for determining the guy points...
good morning, to all, the ideal angel of the guide lines is 45 deg (more is better but a most of the times its a waste of line) if there is only some wind you...
Excellent, Torsten, I see I misread the question when I answered it at 4am this morning. I described how to determine the guy points on the mast, not the...
Good morning Gents, Thanks for this information. That's most helpful! Don't worry about the follow up question. You know, the one where I ask who's coming over...
You paying the airline ticket? I'll make an exception and even fly 2nd class. ;-) ... From: spiderbeam@yahoogroups.com [mailto:spiderbeam@yahoogroups.com] On...
Got a question or 2 about measuring for the locations of the elements. I seem to recall from the manual that the driven element distances should be from the...
"I seem to recall" is not a good way to build a Spiderbeam. The instructions state how to measure the spacing and list the lengths in a table. All measurements...
Hi guys, we are using too much folklore, too little maths. I have attached little spreadsheet for all to play with. Guy rope is example of paralelogram of...
Hi Tino, Your attachment was deleted from your post, but I'd appreciate receiving it if sent directly to me at docbrent@... Thanks, Brenton Crowhurst, ...
Dear friends, I am new to spider beam and am setting up my5 BAND HD VERSION KIT which I purchased recently. Followed the manual and assembled/fabricated the...
Hi San, First, you see why "not transposing" any of the driven elements is such an important factor. Transposing just one element can have a significant impact...
Rick, First of all thank you very much for the reply email As advised with the help of my friend this morning i checked again if any of the elements are...
Hi San, OK. What was unclear is, was your 17m DE correct originally or after you transposed it? You gave us two sets of SWR numbers. Which set is correct when...
