Because the bottom of the GM is balanced with the top, it may not provide the best performance being so close to the ground. The Vector 4000 on the other hand is one antenna that is noted for maintaining good performance when mounted this close to the ground. The gamma setting may have to be adjusted a little but I think you'll like how it works at this restricted mounting height.
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New antenna from Sirio Gain-Master
- Thread starter dxswe
- Start date
Because the bottom of the GM is balanced with the top, it may not provide the best performance being so close to the ground. The Vector 4000 on the other hand is one antenna that is noted for maintaining good performance when mounted this close to the ground. The gamma setting may have to be adjusted a little but I think you'll like how it works at this restricted mounting height.
look into the sirio top one also. probaly wont be as good as a vector
at that height . however the vector is 29 or 30 feet in lenth
something else to consider when ya decide on your antenna.
let us know what ya get and how it performs im really curious
cause im not able to get a antenna up really high either
at that height . however the vector is 29 or 30 feet in lenth
something else to consider when ya decide on your antenna.
let us know what ya get and how it performs im really curious
cause im not able to get a antenna up really high either
His mast has considerable flex in it. Too long and thin for the job without guy wires IMO. I've seen my GM take 90 MPH in hurricane Sandy and the top bent over just about the same amount you see in this 40 to 50 MPH gust. However my mast is much more stable.
It looked to me that his mast was not quite up to the task. That would be the first thing to fail. I was studying the vid. The rf choke is a negative factor in high winds adding a greater wind load to the antenna. If you study the vid carefully, you'll see how the antenna is interacting with the mast. They looked out of snyc with each other. That might add undue stress between the vertical element and the choke. I would opt for a mast with not as much flex but still flex some. If the GM is designed right it shouldn't fail where the vertical meets the choke.
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I have to say that the mast isn't the best/strongest in the world, but could be adequate if it was guyed. Un-guyed, it's just an additional contributor to the antenna flexing. From what I could tell, the choke is certainly contributing wind-load to the mast, but it's doing nothing to the antenna.
I'm just not a fan of multi-section vertical antennas, too much flex because of the joints. I'm familiar with high winds. I've also had verticals that tended to bend in those winds. There are limits with any antenna not just that particular one. But because of how that one is put together, it wouldn't be the best choice here.
- 'Doc
I'm just not a fan of multi-section vertical antennas, too much flex because of the joints. I'm familiar with high winds. I've also had verticals that tended to bend in those winds. There are limits with any antenna not just that particular one. But because of how that one is put together, it wouldn't be the best choice here.
- 'Doc
Well,we could always ask M42Duster. He's got one mounted. They only cost a couple of bills. It's not like sticking your pimped out Escalade up there. Replaceable.
40+mph wind is not my idea of strong wind, on the odd occasion we get 100+ winds,
There She Blows Photos by ukmudduck | Photobucket
im still waiting for very strong winds to test the local gainmaster survival rating, so far none have seen more than about 70-80mph, many antennas can withstand that.
Judging by all the vids I've seen so far,it looks like England gets pretty windy.
I got a new Sirio Vector 4000 in the box but I'm planning on moving to the eastern mountains on Tennessee.
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