I never put a beam up onto a tower before. So I had some misconceptions when I bought my 5-band kit. I knew it would be a little heavier than the 6Kg of the...
... I am having some difficulty visualizing the situation - tipping the antenna on its side to get it up the tower suggests to me perhaps a free-standing ...
Hi Chuck: You certainly do not need a crane to hoist a 5 band spiderbeam! I can lift mine (minus 40m dipole, but with hub on 6' steel mast) with one hand....
Hello Chuck, nice to hear from you again. Sorry to see you seem to experience a few problems getting the antenna on the tower. I have to admit I never put my...
Hey John, thanks for the elaborate "wish list / specification" given below .. :) It seems you are thinking just a bit ahead, since we are definitely working ...
Hi, Con, There is a U.S. manufacturer that sells aluminum telescoping towers, but the cost and installation requirements for a freestanding crank-up tower were...
I believe this whole kit should be made available in the US, as I believe the article I prompted in QST is going to make this a very popular antenna here....
Hi, Con, I found something very interesting when I raised my antenna height from 1.5m on the ground to about 7.6m on the mast and rotator. The frequency of...
Hi Chuck, thank you for your continuous reporting of your findings. ... I have just heard of similar findings by DL5ME .. I shows that the values found by...
Hi, Con, About 4 days ago, you mentioned "pneumatic telescopic towers" and I didn't pay much attention, but today, faced with the need to lift my antenna,...
Pneumatic mast?? I have a ”Clark PT-20”, old military surplus from 1972. http://www.clarkmasts.co.uk <http://www.clarkmasts.co.uk/> (PT-20 is not listed...
Of course the steel pipes can withstand what little pressure it would take to "expand" the air inside the two or three sections of telescoping mast, thereby...
Watch the air pressure as you raise the antenna or you might go past the stops and inadvertantly launch your spiderbeam into the stratosphere!! Would probably...
I wanted to add guy lines to support the spreaders at the 3m joints, so I bought additional Kevlar and insulators. But I made one mistake. I should have...
Hello spider fans, I had a big problem to install my spider on roof, to be honest we did not get it on. I live in a 3 floor building and my home is in the...
Hello spider fans again, ... I have put some pics from my qth in album from spider group, you can check them and then I will erase pics. Tks in advance....
... did not get ... floor. We ... tower. We ... in very ... my tower, ... how can I ... photos of ... Hi, David, I know it seems like there should be an easy...
David Quental <ct1drb@...> wrote: Hello spider fans again, ... I have put some pics from my qth in album from spider group, you can check them and then I...
... What you describe is similar to the sort of houses I rent here in rural VR. The easiest way to get a beam on the top of the 5m roof tower is to tram it up...
A shot from the top of the tower looking back down would really help right about now, but where imag0075 was taken from looks much easier to deal with than the...
I was looking through the specifications, but did not see any real numbers. Does anybody know what the real windload factors are for each of the versions of...
You will have to calculate the surfaces presented by the wires, the guys and the support arms plus the vertical connection pipe. You have to calculate the ...
... numbers. ... this ... I placed the 40m dipole wire under the Velcro wraps along the side of the boom in each direction, so I don't think they contribute...
I've uploaded a MMANA model for a 3-band, slightly modified spiderbeam. MMANA is an antenna analysis tool and is "... free for Amateur Radio use". See...
592
Wieslaw Kosinski, SP4Z
sp4eez@...
Aug 25, 2005 6:23 am
.... and what are the results of your modification? Wes SP4Z ... From: john_dilo <john_dilo@...> To: <spiderbeam@yahoogroups.com> Sent: Thursday, August...
593
Konstantin Vakhonin
osp@...
Aug 25, 2005 6:29 am
Hi there, I have lot of spider beam model's in MMANA if somebody need it... 73, Stan RU4SS ... From: Wieslaw Kosinski, SP4Z <sp4eez@...> To:...
When I modeled the original design, 20m and 15m showed relatively good impedance, but 10m was quite low; about 22 ohm @ resonance (this is to be expected for a...
John, it seems there is something wrong in your MMANA model. 22 ohms at resonance is way too low. Ask any owner of a 3-band spiderbeam, version 2. The...
Hello @ all :)) Has someone build (or modelling for/with MMANA) a Spiderbeam for my top-bands 10, 14 and 18 mHz ? vy 73 and a nice weekend, de Dietmar, DL4HAO ...
