I worked for The quality manufacturer of 10 turn pots and they are still
fragile, wirewound devices. If you want the ultimate, why not buy a prop
pitch rotor and control it with a Green Heron controller. That's what I am
putting up and I expect to have zero problems with it, regardless of what
antenna(s) I put on it.
Bob W6TR
----- Original Message -----
From: "Roger (K8RI)" <K8RI-on-TowerTalk@tm.net>
To: "Wayne R Hudson DO" <whudsondo@bright.net>
Cc: <towertalk@contesting.com>
Sent: Sunday, April 27, 2008 5:07 PM
Subject: Re: [TowerTalk] yaesu rotors
> Wayne R Hudson DO wrote:
>> Am putti9ng up a KT36XA at 120 ft and am thinking of rotors. The T2X wont
>> survive much in Ohio winter and spring winds
>>
> I went through several of the tail twister type rotators (trashed them)
> and two HDR 300s in a matter of about 3 weeks. I'd never use anything
> with spur gears and the wedge brake on a sizable antenna load. The winds
> were 30 - 40 MPH when I tried to turn the array. I didn't think
> something that large could turn that quickly when I released the brake.
> The motor didn't have the power to stop the rotation.
>> Prositel is too big and cumversome and I worry abt service.
>>
> The motor position can be adjusted so it'll fit a 45G and larger. The
> newer ones are designed a bit differently than my old PST-61and I like
> them. They still use a pot in the rotator for position indication.
> (actually a portion of a high quality 10 turn pot) Mechanically they
> are *relatively* easy to service and the new ones have better seal than
> the old ones. http://www.rogerhalstead.com/Gears.htm (I need to finish
> the reassembly part on that page) Parts are common and readily
> available for the older ones *except* for the large worm gear wheel. I
> understand this has been changed. For factory Service? I'd call Array
> Solutions to ask. http://www.arraysolutions.com/ . I'd stay away from
> the older green models that needed the top seal redesigned and used a
> custom worm gear wheel that was difficult to get with long delivery times.
>
> They have a chart that gives comparisons to other rotators and lists the
> PST61 as an equivalent to the HDR600 for antenna area. I'd not even
> consider the HDR300 to be in the same running with the PST-61with spur
> gears and the wedge brake. Actually I'd like to have one of the new
> PST-61HDs except for price. OTOH with the mass I have up there it'd
> might still be the way to go.
>
> There are a couple of rotators that I'd choose for a large antenna or
> antennas such as the array I have up. In addition to the Prosistel
> series I'd pick the big
> Orion,
> ( http://www.arraysolutions.com/Products/m2rotators.htm ) also available
> from Array Solutions, or the Alpha Spid ( http://www.alfaradio.ca/ )
> made in Canada. They were going to come out with a monster version in
> addition to their standard.
>> Yaesu is questionable. I had one and it worked for less than a yr.are
>> they
>> any better now and can you get them fixed in the US
>>
> Again, last I knew they still use spur gears and I'd stay away from them
> for large arrays and "I believe" you can get either the Orion or Alpha
> Spid for about the same money.
>
> 73
>
> Roger (K8RI)
>>
>>
>> Any ideas
>>
>>
>
>>
>>
>> Hud, K5ZG
>>
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>
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