[HCARC] Yaesu GA-3000 Rotor Shock Mount

[Dale Gaudier]

Gary:

I can't comment on the Yaesu G-2800 rotor or its controller (the GA-3000 is the number for the shock absorber, I believe) since I have never owned one. However, the Green Heron RT-21 controller I use for my M2 Orion 2800PX rotor has a function where it electronically ramps down the speed of rotation as you get near the stopping point. That prevents the stress you would otherwise get if the rotor were to abruptly stop when it gets to the stopping point. The controller also ramps up the speed when you start rotation to also prevent stress that would occur if you were to abruptly apply full power to the motor. 

BTW, the Green Heron controller also has a USB port and can be controlled directly from your computer. Many logging and contesting programs will interface directly to the controller, giving a whole new meaning to "point and shoot" when DXing or contesting.
 
73,

Dale - K4DG

-----Original Message-----
From: Bill Tynan
Sent: Sunday, March 16, 2014 2:35 PM
To: Gary J - N5BAA ; hcarc at mailman.qth.net
Subject: Re: [HCARC] Yaesu GA-3000 Rotor Shock Mount

Gary and all:

No, I don't have one, although I have had a 2800 for abt 15 years. It's the best rotator I've ever had. Of course, I don't have a big 4 element 20 or a
40 meter beam, just the 50 ft boom M2 for 6 meters, the 36 ft boom 2 meter and other assorted VHF and UHF antennas. If I was to have a big 20 meter beam or a 40 meter beam, I probably would be worried abt the shock and would have the GA-3000.

My $.02 worth.

73,

Bill, W3XO

--------------------------------------------------
From: "Gary J - N5BAA" <qltfnish at omniglobal.net>
Sent: Sunday, March 16, 2014 9:39 AM
To: <hcarc at mailman.qth.net>
Subject: [HCARC] Yaesu GA-3000 Rotor Shock Mount

> In CQ magazine I saw a reference to a Yaesu GA-3000 rotor Shock Mount 
> that is designed to absorb the shock of a large antenna array stopping 
> when using the Yaesu 2800 rotor.  It supposedly absorbs the shock of 
> stopping thus helping to prevent damage to the turning rings.  While I 
> don’t either have an array that is big, nor the ability to mount a 
> 2800 rotor in my crank up tower, it was something I have not heard of 
> in any of our presentations on antenna towers.  DOES ANYONE USE THIS 
> Shock Mount or is it some extra stuff that only the BIG GUNS with BIG 
> TOWERS need to be concerned with.
>
> 73
>
> Gary J
> N5BAA
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