Ok so far I've only had the pleasure of operating on a gain antenna in
the HF bands for 2 days in my lifetime. I'm in the process of working out a setup that will allow me to gain at least one day a year... ;) I'm looking at a mast setup from Blue Sky Masts (http://www.blueskymast.com) From the looks of it they will allow me to get my antenna up to about 10 meters with margin. The antenna that I've been given is a Hustler 3-TBA its rated to provide 8dB of gain. Doesn't specify what band that gain pertains to or if its dBi dBd or what... But its got 8dB of magical happiness. And 27 to 28 dB of F/B ratio. It has a boom length of 14' and a longest element of 24'9". The wind surface is rated at 5.7sq. ft and it weighs 40 pounds. Blue sky has a max head load of 40 lbs at 11 meters on their sturdier towers. This is why I figure 10 meters would be a good number. However I plan on purchasing the 11 meter tower as it is the first model that comes with the secondary guying equipment rather than having to purchase it separately. So my question to you gentlemen is what are your thoughts on this antenna? How high to I really need to get this thing in order to get good performance out of it? I ask this because I heard from the Blue Sky sales guy that he'd only recommend going to about 8 meters and double guying. (I'm still waiting for a response from BlueSky Engineering on why I'm not allowed to use their mast to 10 meters as I'll be doing so with margin). I think the reason may be that their wind load ratings are tested with 1 sq ft of surface area. Then finally if I were later to add a better antenna system to this setup what would you recommend? Preferably more gain as I'm usually running with either 7 watts (K1) or up to 100 watts (K3) never more (and usually less). I think that less weight would also be beneficial as it would make things easier to deploy and might possibly lend itself to greater mast heights (I can always buy more mast sections to add to my setup at a later date). Thanks for your thoughts gentlemen. ~Brett (KC7OTG) ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
I couldn't see a price for the Blue Sky mast, but anything that high
quality has to be expensive. What about a spiderbeam on one of their 50' aluminum masts? (www.spiderbeam.us) Or, the MFJ fiberglass mast at 40'. Last year for FD we built a hexbeam and put it up about 50' -- it was wonderful. DX Engineering sells a hexbeam center plate that we'll buy this year, if we do it again. These are all 20-15-10, of course. Decent gain, good F/B, and published specs. Like donated computer equipment -- a donated antenna may not fit your purpose. Peter N8MHD On Sat, Feb 6, 2010 at 9:07 PM, Brett Howard <[hidden email]> wrote: > I'm looking at a mast setup from Blue Sky Masts > (http://www.blueskymast.com) ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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