Max-Gain MK-8
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Do any of you Elecrafters have experience with Max-Gain's MK-8
fiberglass mast (telelscoping poles)? I'm interested in using their 50-footer guyed down as a center support for an 80m doublet. Thanks for any information! 73, Matt Zilmer W6NIA ______________________________________________________________ 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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I used an MK-8HD (50') for Field Day. I had an Arrow 2m/440M j-pole over a
large dipole center insulator made from pvc pipe and used 300 Ohm ladder line and 140' of 14 gauge house wire. Once three people guyed it perfectly vertical it was OK for the rest of the weekend. However the top did bow before that. I purchased the three fiberglass guy rings that were nice ($5 each). It was actually extended about 43 feet total. I have some pics at: http://tinyurl.com/luwagy Next time I will use a much smaller center insulator. For NVIS, for MARS I will take off the top 1" OD section. Steve, W2MY, AAR6CX -----Original Message----- From: [hidden email] [mailto:[hidden email]]On Behalf Of Matthew Zilmer Do any of you Elecrafters have experience with Max-Gain's MK-8 fiberglass mast (telelscoping poles)? I'm interested in using their 50-footer guyed down as a center support for an 80m doublet. ______________________________________________________________ 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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Steve,
Thanks much. Nice pictures. About what I was thinking of doing too! 73, matt On Tue, 21 Jul 2009 17:27:54 -0500, you wrote: >I used an MK-8HD (50') for Field Day. I had an Arrow 2m/440M j-pole over a >large dipole center insulator made from pvc pipe and used 300 Ohm ladder >line and 140' of 14 gauge house wire. Once three people guyed it perfectly >vertical it was OK for the rest of the weekend. However the top did bow >before that. I purchased the three fiberglass guy rings that were nice ($5 >each). It was actually extended about 43 feet total. I have some pics at: >http://tinyurl.com/luwagy > >Next time I will use a much smaller center insulator. > >For NVIS, for MARS I will take off the top 1" OD section. > >Steve, W2MY, AAR6CX > > >-----Original Message----- >From: [hidden email] >[mailto:[hidden email]]On Behalf Of Matthew Zilmer >Do any of you Elecrafters have experience with Max-Gain's MK-8 >fiberglass mast (telelscoping poles)? I'm interested in using their >50-footer guyed down as a center support for an 80m doublet. > >______________________________________________________________ >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 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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In reply to this post by list1
Well, maybe I'm being a little picky here, but the "Arrow 2m/440m j-pole" is not a j-pole antenna.
Arrow calls it an "open stub j-pole" - but it's a new creation and borrowing the popular "j-pole"name. Looking at the pictures - the vertical element which has the coax cable attached to it - well this item appears to be complete insulated from the rest of the antenna. Look at the parts list and there is a plastic sleeve/washer that insulates it from the rest of the antenna. I think the other vertical elements probably do nothing at all except to make it resemble a jpole? Or maybe these additional elements are parasitic elements - similar to a yagi's elements. How does this antenna work? I don't know. That's why I didn't buy it. Instead I got a co-worker to teach me basic plumbing soldering skills to build a Super Cactus J-Pole antenna. It has more gain that a regular J-pole. Including soldering tools, I certainly paid more than buying the Arrow "open stub j-pole" - but I don't want an antenna I don't understand. The Super Cactus J-Pole works well on my Winlink 2m RMS station. Howard
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