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Re: [TowerTalk] New FAA regulations affecting towers

To: towertalk@contesting.com
Subject: Re: [TowerTalk] New FAA regulations affecting towers
From: "Roger (K8RI) on TT" <K8RI-on-TowerTalk@tm.net>
Date: Mon, 18 Jul 2016 15:56:09 -0400
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
The short answer is: Not practical!
Flying low with lots of obstetricals, flying a GPS pattern for maximum efficient coverage, and ground clutter on the RADAR return. RADAR would be pretty much useless and a distraction. It's pretty busy in there while looking outside.

73

Roger (K8RI)


On 7/18/2016 Monday 9:23 AM, Richard (Rick) Karlquist wrote:
Haven't seen this mentioned:

Why don't they require these low flying planes to
have radar that would "see" power lines and towers?

Rick N6RK

On 7/18/2016 4:44 AM, Patrick Greenlee wrote:
I have seen a few dusters up close ranging from an old Steerman to
modern purpose built.  The latter had an inclined sharpened blade
positioned in front of the canopy  to cut wires.  I don't know how
effective that arrangement was. I never saw it tested.

Patrick        NJ5G


On 7/17/2016 10:38 PM, Roger (K8RI) on TT wrote:
Sounds like his antenna may have been a Rhombic.  They were very
popular for those who had the room back then.

Crop dusting aircraft would likely cut a wire antenna or phone line
like it wasn't there, but a friend (I went to high school with)
misjudged the height of a power line and neatly removed the vertical
stabilizer from his Ag Cat.  With no lateral stabilization the torque
rolled it over and turned it into a lawn dart. It hit the ground going
almost straight down. killing him instantly.

Those transmission lines are substantial and wound on a steel core.
That strong steel core is much larger than any typical antenna wire.
The antenna might bring down a light plane but modern crop dusters are
built like the aeronautical version of a tank.

We flew down to Visit my wife's folks in Florida over the Christmas
holidays some years back. A layer of ground fog forming at night is
quite common in the Florida peninsula and may not burn off until 9 or
10 AM.

A piper Cherokee pilot took off one morning, staying really low. He
apparently forgot about the high tension lines abt 2 miles W of (IIRC)
Tampa Bay Exec. He apparently panicked when he saw the first set pass
overhead and pulled up...right into the second power line. The only
thing left was the engine and prop rolled into a ball. There was a
notch in the one prop blade a good inch deep where it hit one of the
lines.  AFAIK power was not interrupted.
They probably replaced that span.

73

Roger (K8RI)


On 7/17/2016 Sunday 10:59 PM, lstoskopf@cox.net wrote:
Waaay back in the early 50s when I was just getting started there was
a Ham in central Kansas whose job was keeping oil wells pumping.  He
and his wife lived in a very small house right in the middle of a
batch of those 90 ft derricks that we all think of when we think of
Texas oil. Anyway, he had a long length of wire running from his 'mud
room' to one of the towers, then to another, etc for maybe 5 or 6
towers and back to the shack. The towers were probably 800 ft
spaced.   Fed with a open balanced tuner.  I'm not sure what bands he
was on, but he could work DX!!!!!!  RF's got to go somewhere!

So wondering how a long wire antenna fits into the regulation? His
would have be a very invisible airplane catcher.

N0UU


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--

73

Roger (K8RI)


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