----- Original Message -----
>>From: "Robert Chudek - KØRC" <k0rc@citlink.net>
>>To: <towertalk@contesting.com>
>>Sent: Wednesday, September 20, 2006 10:30 PM
>>Subject: Re: [TowerTalk] Wind 3 Second Gust Speeds
>>
>>On the "freebie" I mentioned above, page 5 of 7 has the conversion chart
>>Al was referring to. It shows the 90 mph speed is a 3 second gust, which =
>>a 75 mph >>fastest-mile, which = 62 mph 10-minute average, which = 60 mph
>>hourly mean. So the answer to Al's question is yes, 90 mph is the 3-second
>>gust speed.
Do tower manufactures like US Tower rate their towers based on the 3-second
gust, 10-minute average or hourly mean? I don't think I've ever seen a
tower spec that indicated which one they are using.
73,
Clay W7CE
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