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 list1 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: [email protected] > [mailto:[email protected]]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:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > > -- View this message in context: http://n2.nabble.com/Max-Gain-MK-8-tp3300658p3304287.html Sent from the Elecraft mailing list archive at Nabble.com. ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
