I am going to do startup with a ground plane antenna quite likely I will end up with a 5 element Long John. I had one years ago and it slipped the rotor and was constantly out of calibration. How about suggestions on a rotor with a good brake that will not break the bank. thanks.
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Rotor recommend
- Thread starter hotcap24
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No clue.
You have to figure out what the windload is, and then get a rotator that handles that windload or greater. Just guessing is going to get you in the same place you were years ago...a rotator that couldn't handle the antenna.
You have to figure out what the windload is, and then get a rotator that handles that windload or greater. Just guessing is going to get you in the same place you were years ago...a rotator that couldn't handle the antenna.
Who makes the Long John? The published specs should include wind load…if not call them and get an engineer on the horn!
Sadly good rotators are no longer cheap…look at the Yaesu stuff.
Sadly good rotators are no longer cheap…look at the Yaesu stuff.
K4EET
Chaplain
DX Engineering has a "Mast Load Estimator" that will get you pointed in the right direction if you know what numbers to input. Just remember, garbage in means garbage out so please don't guess. Use actual manufacturer specifications!
K4EET
Chaplain
The "Long John" models are under Hy-Gain in the following document:
Get the best one available. Mine broke but luckily it is pointing in an acceptable position for the next 20 years.
Wouldn't you know it...that DX Engineering chart doesn't include an 11 meter Long John! and the 10/12 mtr version windload is N/A!
HOWEVER...the 10mtr version windload is 2...the 15mtr version is 3! Being prudent I would go with 3.
Which means this...https://www.dxengineering.com/parts/ysu-g-450adc#documentation
You agree K4EET?
HOWEVER...the 10mtr version windload is 2...the 15mtr version is 3! Being prudent I would go with 3.
Which means this...https://www.dxengineering.com/parts/ysu-g-450adc#documentation
You agree K4EET?
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There are several different 11m models. I have seen everything from 18' booms to 24' booms. But even so, the 450 whould have no problem handling it, with some extra headroom.
K4EET
Chaplain
This is a thread from 2005 and Hy-Gain had already ceased production of an 11 Meter Long John according to the first post.
You might want to read through the thread and see if there is anything that might be helpful...
You might want to read through the thread and see if there is anything that might be helpful...
KC5AKB
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