|To:||towertalk reflector <firstname.lastname@example.org>|
|Subject:||[TowerTalk] K-factor. Was: Yaesu rotators|
|From:||Alan AB2OS <email@example.com>|
|Date:||Wed, 30 Jun 2004 22:16:40 -0400|
In the course of looking around for a good price for a G-1000DXA, I went
to the Texas Towers Web site and noticed their explanation of the
"K-factor" item that I have seen in ads for Yaesu rotators. The K-factor
is defined as the weight of the antenna multiplied by its turning
radius, and, in the example they give, if one considers only the surface
area of a TH-11DXS, a G-800 rotator will handle it, but when the weight
and turning radius are considered, even a G-1000 is not up to the task.|
In my case, all I intend to put up immediately is a 3-el. SteppIR, which is within the capabilities of a G-1000DXA (or even a G-800DXA), but adding the 4th element (which I might do later) would put me over the top for that rotator.
If people are not considering K-factor when choosing a rotator, that might explain some of the complaints (e.g., on eham.net) that Yaesu rotators are too flimsy.
I am sure that a Yaesu G-800 would handle what I want to put up, but I thought that a G-1000 would give a better safety margin. Yet I notice that the eham reviews rate the G-1000 rotators lower than the G-800 models; the G-1000 actually received several 5/5 ratings, but the 0/5 and 1/5 ratings pulled the average way down. Are the bigger ones really so much worse than the smaller ones?_______________________________________________
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions and ask for Sherman, W2FLA.
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