I use Torque Arms and a Star Guy assembly on my main tower.
Great engineering and has survived storms >85mph (the tower).
Have lost some antenna elements though (snapped off).
Torque Arms on secondary tower.
Cheers,
James
ki5dq
--------------------------------------------
On Sat, 1/7/17, Guy Olinger <k2av@contesting.com> wrote:
Subject: Re: [TowerTalk] torque arms or not?
To: "Guy Olinger K2AV" <k2av.guy@gmail.com>
Cc: "Jim Thomson" <jim.thom@telus.net>, "DALE LONG" <dale.long@prodigy.net>,
"towertalk@contesting.com" <towertalk@contesting.com>
Date: Saturday, January 7, 2017, 7:03 PM
Did a little more digging
into hurricane Isabel.
Gusts were measured in the Norfolk area up to
74 mph, which compared
to other hurricanes
may seem tame. At landfall, Isabel was a category
2, but was geographically very large, and at
one point a category 5.
K4JA's QTH was
on the western side of Chesapeake Bay, with the
hurricane's incoming winds direct over
water for some 10 miles. This
meant that
incoming winds had little to no attenuation from ground
clutter at K4JA QTH, probably for most of the
wind directions
experienced.
It did cause a lot of damage
in eastern North Carolina, Virginia and
Maryland. Here's the damage and
consequences enumeration just from the
state
of Virginia. Ref:
http://www.vaemergency.gov/news-local/hurricane-history/
Hurricane Isabel, Sept. 18,
2003 (figures from Sept. 18, 2003 through
April 30, 2004)
Localities declared major disaster areas:
100.
Fatalities: 32.
Total
damages (not including economic losses): $1.9 billion.
Homes destroyed: 1,124.
Businesses destroyed: 77.
Homes
damaged: 9,027.
Businesses damaged:
1,400.
Total amount of debris: 20 million
cubic yards (equals 200,000 football fields).
Dump trucks used to haul debris: more than
660,000.
Water delivered to localities 1.5
million gallons.
Meals served: 1.4
million.
Ice delivered to localities: 6
million pounds.
Generators provided to
localities: 150.
Calls received at the
Virginia Public Inquiry Center: 6,000.
People who registered with FEMA for assistance:
93,000.
Recovery
Assistance
Housing
assistance (home repair, rental assistance): $33 million.
Other Needs assistance (personal property,
medical, transportation,
miscellaneous): $22
million.
Small Business Administration
loans: $79 million.
Mitigation: $15
million.
Public Assistance
(state agencies, local government, utilities)
Debris removal: $179 million
($50 million of that for VDOT).
Total for
road systems, water control, public buildings/equipment,
public utility systems, and parks and
recreation: $36 million.
For state agencies:
$25 million.
Federal Highway: $30
million.
Total for all public assistance:
$270 million.
In that
context, it's not terribly surprising that some ham
towers came down.
73, Guy
K2AV
On Sat, Jan 7, 2017 at 7:19
PM, Guy Olinger <k2av@contesting.com>
wrote:
>
> On Sat, Jan
7, 2017 at 3:56 PM, DALE LONG <dale.long@prodigy.net>
wrote:
>>
>>
### How tall was the rotating AB105 tower ? 52 mph wind
with gusts to 66
>> mph
>> isnt what I would call hurricane
force. I call that a real heavy wind.
>
>
>
The tower was 200' or in that neighborhood, and had a
pair of phased 4
> element 40m yagis,
OWA's I think. It was big and a lot of wind load.
>
> 73, Guy K2AV
>
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