Category Archives: GATR

Summary of my life the last three months

This video summarizes my life over the past three months.  We have some really exciting things going on at GATR.  They are cool, but they demand a lot of time.  It’s just one deadline after another.  I show up at work with my to-do list and that is quickly thrown out the window managing employees, customers, and product development.  My agenda is made for me.  Enjoy the video!

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7:15 – 1/14/2009

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Driving home from Atlanta after a great three-day test series with the GATR.  Garmin is my navigator.  Can anyone tell where I was at 7:15?

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7:15 – 1/12/2009

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I’m in Atlanta testing the GATR antenna at X-band and C-band at GTRI.  What am I doing at 7:15?  I’m exercising in the hotel stairwell.  Nothing else to do other than eat dinner and reduce data.

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7:15 – 1/7/2009

 

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My cell phone alarm buzzed and reminded me it was 7:15.  I was brushing my teeth.  (Looks like I need some chapstick on my lips.)  I had just enjoyed a good workout in the hotel gym, shower, and teeth brushing session before going to dinner.  Training on the GATR went well today.  Training tomorrow is outdoors with temps in the upper 30s with a stiff breeze – should be fun.

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7:15 – 1/5/2009

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Grade on the first draft of the Training Manual from my boss.  Looks like I have my work cut out for me tonight – I travel to DC to deliver and train tomorrow.  The pressure is on.  Feels like college all over again.

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7:15 – 1/3/2009

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I’m at work (yes, work at 7:15pm on a Saturday night) putting a system together for the first delivery to one of my customers in DC.  I fly up there Tuesday night for a two day delivery and training session.  You are looking at flexible waveguide, a power supply, an inflation unit, a Quick-attach waveguide adapter, and a foam tray that Roy and I are about to carve to pieces in order to get 12 feet of waveguide coiled onto properly.

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GATR Wind Testing

Today was one of those days at work where I got to do some real testing.  Often when we deploy the GATR antenna, people ask how it holds up in the wind.  We have maintained a datalink through 40 mph gusts when Hurricane Ivan came through this area years ago.  We know it works just fine, but we felt that we needed a video that shows that the GATR is durable in high winds.  I borrowed my father’s trailer, grabbed my tripod and camera, and Paul brought his video recorder and we had ourselves a test.  We inflated the antenna on the trailer and set up the video and tripod looking out the back window of my truck. 

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In order to simulate wind loading, I pulled the trailer at different speeds.  On the road in front of our facility, we achieved 50 mph.  The antenna was pretty stable at this speed.  We were very pleased with the performance of the antenna, but curiosity still existed, “I wonder what happens around 75 mph”.  So we moved our experiment over to Redstone Road and opened it up.  Now we had drag coefficient curves for a sphere and we collected load pull data in the cables supporting the ball, but I don’t want to bore you with science.  Here are the video results

Video #1

Video #2

The tests show that as long as the GATR is secured to the ground properly, it can survive winds in excess of 75 mph.  I don’t expect anyone would leave a GATR out in winds this high since it takes about 5 minutes to deflates and move the antenna, but if you did leave it up and a striaghtline wind hit it or a mysterious sand storm blows up, the GATR would be fine.  Did I mention that I love my job?

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