[TowerTalk] Effective moment and K-factor. Was: Yaesu rotators

[K7LXC at aol.com]

In a message dated 7/1/04 11:36:57 AM Pacific Daylight Time, TexasRF at aol.com 
writes:

> What makes sense here is to use Yasu's method of K factor with Yaesu rotors 
>  and use the Hygain method with Hygain rotors. We don't have enough 
knowledge 
> of 
>  the manufacturer's safety margins to guess which method is more 
conservative.
> 
    The bottom line is that they're the SAME and they're just APPROXIMATIONS 
based on the manufacturer's knowledge of the unit. 

    This is an improvement over the old square footage capacity when you 
could have antennas with the same square footage but radically different loads on 
the rototor. The only REAL numbers for rotator capacity are starting torque 
and rotating torque; the K Factor/Effective Moment figures translate those 
numbers into recognizable and usable amateur specifications. 

Cheers,
Steve     K7LXC
TOWER TECH 
ex-National Sales Manage for Amateur for Hy-Gain/Telex