[amsat-bb] Re: Limits of G-5500?

Luc Leblanc lucleblanc6 at videotron.ca
Sat Mar 7 13:19:15 PST 2009

On 7 Mar 2009 at 10:02, Edward Cole wrote:

> At 05:25 AM 3/7/2009, Mark L. Hammond wrote:
> >Hi All,
> >
> >Recently I acquired a 7.5' dish.  It's aluminum with a steel ring 
> >mount.  I estimate the dish weights maybe 50 lbs?
> >
> >What is a realistic limit for a Yaesu G-5500 rotator?  Would it 
> >handle a dish of this size/weight if carefully counterbalanced?  Or 
> >is it too big and silly to even consider?
> >
I used an azimuthal tailtwister rotor to turn various beam over a period of 20 years. He perform to his task without a glitch but after the 
AO-40 short session he finally gave up one motor coil burn. I am now using an Alpha Spid since that event and he's working without any 
problem even breaking the ice cover over the rotor this winter...

My Yaesu KR500-G elevation rotor also start to developed issues and this winter (I'm partly liable here with a faulty installation)  I 
replace it with my former AO-40 TVRO actuator who survive an ice storm who succeed to break a reinforce 1 1/2" aluminium pole. The actuator 
turning bracket suffer a break metal  tear apart and i have to used a full box of soldering rod to make the repair. Picture available on 

Speaking of actuator i always struggle with the motor noise even with a .01pf capacitor to the ground this annoying noise remain. Did any 
one found a way to eliminate it.

P.S. I have all the dismantle tailtwister rotor parts if any one is interested?


Luc Leblanc VE2DWE
Skype VE2DWE


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