| Subject: |
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More Skyhopper open quad questions |
| Name: |
|
Bill Gregory (WO2RET) |
| Date Posted: |
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Mar 8, 05 - 9:07 PM |
| Email: |
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billg10@bellsouth.net |
| Message: |
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Al,
Thanks for the clarification. I'm a little rusty on antenna theory and construction. I haven't done a lot since 1965-66 when we had an AN/GRC-46B rig in Viet Nam and used to cut doublets using Hong Kong mountain at An Khe for a reflector and talked to the world back here. We didn't have telephone service, but we didn't need it either.
I did notice that in the close-up of the coax feed connection, it appeared that you were using a piece of what appeared to be acrylic as an insulator between the center conductor connection to the driven vertical and the shielding on the driven horizontal. Is this correct? Am I also correct in the assumption that the primary lobe will not be generated parallel to the boom but at an angle from it?
We have a lot of new Hams down here and they are always looking for a good, inexpensive antenna. The Jpole is one answer that had kind of been forgotten until I built a rush one during the hurricanes that came through and worked as a relay for the mountain units up in the Blue Ridges. It performed so well that it immediately attracted attention and when I built the Jbeam and got the performance it is giving, attention and interest in home-builts really took off. I figure the more options I can open up, the more interest will be generated and the more new Hams we will get licensed. Most new Hams are like I was, money is a large factor in how much participation there is, especially with the economy the way it is here in the Southeast, and the more you can build yourself, inexpensively, the better. If you would like, I can take a digital picture of the Jbeam and email it to you. I've made some changes to the original design that make it a little easier to tune, aesthetically more appealing and more durable.
Once again, I appreciate the information.
Regards,
Bill, WO2RET |
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