[TowerTalk] "K" factor gets sillier
Sat, 22 Jul 2000 21:03:54 +0000
At 01:46 PM 7/22/00 -0700, Kurt wrote:
>I think the change you reported is good for Yaesu rotator buyers, it
>probably represents a reasonable assesment of how it is, and should
>result in fewer failures from that rotator family.
Gee, Kurt, I'm not with you on this one. In another message to the list, I
described a real-world situation, where the K-factor as computed by Yeasu's
new method would require a G-2800 to turn a C-3. That can't be right! By
the old calculation, a G-800 would be enough. The cost difference is 3:1.
FWIW, I'm currently turning 66 lbs (30 kg) with a radius of 22 feet (7m),
for an old K-factor of 210 (within the G-1000 spec). If you count in the
weight of my mast, however, the K is 385, and I need a G-2800. If I follow
their advice and don't exceed 60 percent of the rated K factor, then I'm
not sure even the G-2800 is beefy enough. Prop-pitch, anyone?
I just think it's shoddy spec-manship to throw in a mast weight fudge
factor that has no real physical significance and then warn you not to
exceed 60 percent of the new reduced K-factor!
73, Pete Smith N4ZR
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