Pete Smith wrote:
> I notice that typical ham rotator loops involve an unsupported loop that
> is perpendicular to the mast, and attached at top and bottom. It seems
> to me that this means a lot of flexing through 360 degrees, and in the
> wind. I have also noticed that TV station remote trucks seem to use
> another solution for their rotating dishes - they wrap a few turns of
> coax loosely around the mast, so that a one-turn rotation only slightly
> loosens or tightens the wrap. Seems like this would be a better, more
> durable practice for ham installations too.
>
> 73, Pete N4ZR
I do with with my MonstIR rotator loop and it works great.
The comment below was supposted to be in reference to
a cable from the ground to the rotor on a frequently
lowered crankup.
Rick N6RK
>
> The World Contest Station Database, updated daily at
> www.conteststations.com
> The Reverse Beacon Network at http://reversebeacon.net, blog at
> reversebeacon.blogspot.com
>
>
> On 2/26/2010 8:45 PM, Rick Karlquist wrote:
>> Even if you obey the minimum bend radius, the coax
>> can fail from metal fatigue or dielectric flow.
>> What might be best is to use very flexible coax
>> but put it inside a fairly inflexible piece of hose
>> or tubing. Then you never approach the bend
>> radius of the flexible coax.
>>
>> Rick N6RK
>>
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