Great idea! I did similar with a 6 ft. roof tower on my garage. 10 ft mast, 7 ft above the tower. To lower I remove the rotator and the mast drops through a hole in the roof (covered when not in use) so the antenna is about 5ft above the roof. Guys only on the roof tower. This puts my hexbeam 20m element at 27 ft. AGL. 73 Peter
Dang! Looks like you're right. hamradio.com completely removed it from their web page, and DX Engineering lists it as "Not Available" which I'm pretty sure is different than "Out of stock, but on order and hopefully coming soon." I have no authoritative info other than just searching for it, but it looks like you're correct unfortunately.
Nothing that the upper pipe is inserted into, other than the lower pipe. I think what you're seeing is a small aluminum plate with U-bolts on both the bottom and top pipe. The only purpose of that plate is to keep the top pipe from twisting in the wind. It is _NOT_ supporting any weight of the upper pipe, all that is supported by the bolt inserted through the lower pipe that the upper pipe rests on, and a bolt through the upper pipe that rests on the edge of the lower pipe. The plate and U-bolts are only there to prevent the top pipe from twisting.
Hello. question: what is the minimum size of the iron pipe 12 meters for lifting the yaghi fm antenna Dimensions antenna gauge L*W*H: 5500*900*1760 MM Weight: 5 KG? thank you!
I have no idea. You’d have to ask an engineer to do the calculations for you on that. It’ll take into account the wind load of the antenna (different than the total dimensions and weight), and whether you guy the mast or not. Even with that information, I can’t answer that question for you. Sorry.
Thank you!
Looks like you have an Antenna farm out there 👍👍
Great idea 🤔
Great idea! I did similar with a 6 ft. roof tower on my garage. 10 ft mast, 7 ft above the tower. To lower I remove the rotator and the mast drops through a hole in the roof (covered when not in use) so the antenna is about 5ft above the roof. Guys only on the roof tower. This puts my hexbeam 20m element at 27 ft. AGL. 73 Peter
Cool idea ! Thx for sharing. I enjoy the podcast too! Macintosh 219
I like the design.
BTW: Comet H-422 Rotatable Trapped Dipole no longer available?
Dang! Looks like you're right. hamradio.com completely removed it from their web page, and DX Engineering lists it as "Not Available" which I'm pretty sure is different than "Out of stock, but on order and hopefully coming soon." I have no authoritative info other than just searching for it, but it looks like you're correct unfortunately.
Love your work...
73's mate ...
Nice work👍
This is sweeet!!! Yeah the quickrete and post hole diggers work great. Feed those damn cats man lol.
Thanks for sharing this with me. Great ideas. I thought I had a tight lot! Thanks for your your help the other day, Smitty! Jason KD9ZHF
Thanks Mark!
Very cool!
Boy I sure do wish we could get 20' sections of tubing around here. Welp I guess that's what the welder's for.
21' sections of iron pipe are pretty standard, at least in the US. Not sure where "around here" is. Any plumbing supply store should have them.
Its looks like you have some sort of a bushing that the smaller pipe is inserted into? What kind is that and where did you get that?
Nothing that the upper pipe is inserted into, other than the lower pipe. I think what you're seeing is a small aluminum plate with U-bolts on both the bottom and top pipe. The only purpose of that plate is to keep the top pipe from twisting in the wind. It is _NOT_ supporting any weight of the upper pipe, all that is supported by the bolt inserted through the lower pipe that the upper pipe rests on, and a bolt through the upper pipe that rests on the edge of the lower pipe. The plate and U-bolts are only there to prevent the top pipe from twisting.
@@SmittyHalibut OK thanks!
Hello. question: what is the minimum size of the iron pipe 12 meters for lifting the yaghi fm antenna Dimensions antenna gauge L*W*H: 5500*900*1760 MM Weight: 5 KG? thank you!
I have no idea. You’d have to ask an engineer to do the calculations for you on that. It’ll take into account the wind load of the antenna (different than the total dimensions and weight), and whether you guy the mast or not. Even with that information, I can’t answer that question for you. Sorry.
I'd say, worst case of a leak is it will rot your roof.
Probably true, but since it’s outside the house, part of the overhang, I can observe it. So far so good.
Fourth! Does that make me a quadruple nerd???
Brilliant! de w0vet
Heya! New sub ☘️
73
First!!!
...nerd...