In a message dated 97-03-12 12:29:29 EST, firstname.lastname@example.org (EA3KU-Fernando
> I am prepairing my new self-suported tower ( abt. 100 feet ) to
> acomodate a new OR-2800 rotator with a KLM KT34XA and a 40-2CD.
> I ordered the OR-2800 and PTA-1 ( torque absorver ) from U.S thru my
> local radio stores , but the local dealer was unable to locate this
> PTA-1 torque absorver on U.S., he say that its not longer available.
> That's true ?.
> If not, where I can buy this PTA-1 and what's is aproximative price ? .
A nifty addition to any antenna/rotator system, the shock absorbing
properties of the rubber dampener in theory will allow a rotator to take up
to 25% more load. The theory being that the rubber isolator will take some
of the wind torque forces off of the rotator.
Dave Leeson, W6NL/ex-W6QHS, features a BMW drive cushion in his book
"Physical Design of Yagi Antennas". Unfortunately the KLM/M2 product didn't
perform as reliably as everyone hoped and the product has been discontinued.
For your KT34XA/402CD load, the Orion 2800 has plenty of strength and
capacity -- you don't need any additional devices in your system that might
73, Steve K7LXC
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