Arne and all,
Tnx for the replies. Will have to go out and do more checking of my rotator
connection and voltage across pins 4 & 8. I use the CATS, gold plated quick
connectors so the connection should be good. My lightning arrested is
mounted near the tower base, so I can check the voltages there. I will also
loosen the rotator mast clamp plate and see how easily the mast itself
rotates.
Upon further checking I found that the bolt hole pattern for the
TailTwister and Ham 4 are the same, however, the the TT has 6 - 5/16" bolts
vs. 4 - 1/4" bolts for the H4.
Tnx for all the input, I just have to got out and follow up!
Ray,
N6VR
On Tue, Oct 21, 2014 at 8:12 AM, Richard (Rick) Karlquist <
richard@karlquist.com> wrote:
> On 10/20/2014 11:46 PM, Ray Benny wrote:
>
>> I have a MA770, 70 ft telescoping mast with a Ham 4 rotator mounted at the
>> base. My problem, if I have any winds over, say 10 mph, the Ham 4 stalls
>>
>
> Ray,
>> N6VR
>>
>
> I used to have an MA550 with a Ham-M, still working after
> 50 years! The mounting of the rotor on the base is such
> that it can be out of alignment and bind. You might
> want to check out this possibility. If you remove the
> rotor, you should be able to turn the mast by hand.
> If you can do this, then the bearings are not the problem.
>
> Rick N6RK
>
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