[TowerTalk] Broken Alpha Spid

[David Gilbert]

Of the commonly available rotators, one of K7NV's rebuilt prop pitch 
units is probably the most durable for heavy loads.

In my opinion, next would probably be the ProSisTel PST-71D (which I 
have), but it weighs almost 90 pounds.

The ProSisTel PST-61D is generally considered similar to the Orion 
2800.  I still have one with stripped gears (antennas are OB16-3 and 
OB2-40), but I get horrendous whirling winds here, and when they hit the 
tower head on the torque forces on the boom ADD instead of balance. 
That's a tough task for any rotator, but so far the 71D has held up.

I guarantee you won't break the mounting bracket on the ProSisTel units, 
but you'd be wise to buy (or make your own like I did) something like 
this for a mast clamp since the ProSisTel clamp is a poor design:

https://www.championradio.com/Orion-2800-Replacement-Mast-Clamp.44

or this one, which I believe is made by K7NV:

https://www.arraysolutions.com/index.php?route=product/product&product_id=14825&search=mast+clamp

73,
Dave   AB7E




On 2/26/2020 8:29 AM, W0MU Mike Fatchett wrote:
> It appears that my Alpha Spid cut loose in some heave wind recently. I 
> am looking to upgrade to something else.  I am turning a 4 ele SteppIR 
> with the 30/40 loop and a 2 ele Cushcraft 40.
>
> The Yaesu 2800 and Orion 2800 have been suggested.  I heard that you 
> have to be careful with the Yaesu and the mounting bracket as you can 
> break it.  I have a Green Heron Controller.
>
> It has also been suggested to get the NV or LXC mounting brackets for 
> the Orion.
>
> Any other thoughts?
>
> W0MU
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