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DESCRIPTION:The Arecibo Observatory first opened in 1963\, has been named a
 n IEEE Milestone in Electrical Engineering and Computing in 2001\, and has
  been a marvel in engineering ever since. It has been a monumental instrum
 ent for scientific research in the fields of astronomy\, planetary radar\,
  ionospheric probing and HF heating modification\, and optical probing of 
 the atmosphere.\n\nWhile the science and the discoveries are well known to
  many\, the antenna technology and engineering are equally as impressive a
 s the discoveries. The original concept\, by Prof. William Gordon in the E
 lectrical Engineering Department at Cornell University\, was for a 1000 fo
 ot parabolic dish aiming only at zenith\, with no tracking capability for 
 studies of the ionosphere with the newly developed technique of incoherent
  scatter radar (ISR). Fortunately\, knowledge of some on-going research wi
 th spherical reflectors was suggested where the feed could be moved to sle
 w the beam. This talk will discuss the unique designs over the years of an
 tenna feeds and associated engineering for frequencies from HF well into t
 he microwaves. Many upgrades occurred during these years and will be descr
 ibed in detail in the ways they have provided significant improvements to 
 the Observatory’s capabilities.\n\nMost of the 430 MHz 96 foot line feed
  antenna broke off and fell through the dish in 2017 during Hurricane Mari
 a. Then in December 2020\, the platform fell into the dish destroying larg
 e sections of the dish and the equipment in the platform.\n\nThere is so m
 uch more to tell about the engineering at Arecibo that will be the subject
  of this presentation.\n\nDinner will consist of:\n\n- Chicken Bruschetta\
 n- Garden Salad\n- Roasted Garlic Mashed Potatoes\n- Honey Roasted Carrots
 \n- Assorted Dinner Rolls\n- Brownies\n\nParking for the event is free and
  is in the parking lot south of the library. See the below map of the PSU 
 Harrisburg for an overview on where the building and parking is located.\n
 \nThere is a fee for the entire dinner+presentation event. There is no fee
  for only attending the presentation.\n\nSpeaker(s): Jim Breakall\, \n\nAg
 enda: \nDinner: 6:00 - 7:00 PM\n\nPresentation: 7:00 - 8:30 PM\n\nRoom: Ro
 om 101\, Morrison Gallery\, Bldg: Madlyn L Hanes Library (Building D)\, Pe
 nn State Harrisburg\, 777 West Harrisburg Pike\, Middletown\, Pennsylvania
 \, United States\, 17507
LOCATION:Room: Room 101\, Morrison Gallery\, Bldg: Madlyn L Hanes Library (
 Building D)\, Penn State Harrisburg\, 777 West Harrisburg Pike\, Middletow
 n\, Pennsylvania\, United States\, 17507
ORGANIZER:jack.burbank@ieee.org
SEQUENCE:26
SUMMARY:History of Antenna and Associated Engineering Technology at the Are
 cibo Observatory\, Arecibo\, Puerto Rico
URL;VALUE=URI:https://events.vtools.ieee.org/m/425250
X-ALT-DESC:Description: &lt;br /&gt;&lt;p class=&quot;MsoNormal&quot;&gt;&lt;span style=&quot;font-size: 
 12pt\; line-height: 107%\; font-family: arial\, helvetica\, sans-serif\;&quot;&gt;
 The Arecibo Observatory first opened in 1963\, has been named an IEEE Mile
 stone in Electrical Engineering and Computing in 2001\, and has been a mar
 vel in engineering ever since.&lt;span style=&quot;mso-spacerun: yes\;&quot;&gt;&amp;nbsp\; &lt;/
 span&gt;It has been a monumental instrument for scientific research in the fi
 elds of astronomy\, planetary radar\, ionospheric probing and HF heating m
 odification\, and optical probing of the atmosphere.&lt;span style=&quot;mso-space
 run: yes\;&quot;&gt;&amp;nbsp\; &lt;/span&gt;&lt;/span&gt;&lt;/p&gt;\n&lt;p class=&quot;MsoNormal&quot;&gt;&lt;span style=&quot;
 font-size: 12pt\; line-height: 107%\; font-family: arial\, helvetica\, san
 s-serif\;&quot;&gt;While the science and the discoveries are well known to many\, 
 the antenna technology and engineering are equally as impressive as the di
 scoveries.&lt;span style=&quot;mso-spacerun: yes\;&quot;&gt;&amp;nbsp\; &lt;/span&gt;The original co
 ncept\, by Prof. William Gordon in the Electrical Engineering Department a
 t Cornell University\, was for a 1000 foot parabolic dish aiming only at z
 enith\, with no tracking capability for studies of the ionosphere with the
  newly developed technique of incoherent scatter radar (ISR).&lt;span style=&quot;
 mso-spacerun: yes\;&quot;&gt;&amp;nbsp\; &lt;/span&gt;Fortunately\, knowledge of some on-goi
 ng research with spherical reflectors was suggested where the feed could b
 e moved to slew the beam.&lt;span style=&quot;mso-spacerun: yes\;&quot;&gt;&amp;nbsp\; &lt;/span&gt;
 This talk will discuss the unique designs over the years of antenna feeds 
 and associated engineering for frequencies from HF well into the microwave
 s.&lt;span style=&quot;mso-spacerun: yes\;&quot;&gt;&amp;nbsp\; &lt;/span&gt;Many upgrades occurred 
 during these years and will be described in detail in the ways they have p
 rovided significant improvements to the Observatory&amp;rsquo\;s capabilities.
 &lt;/span&gt;&lt;/p&gt;\n&lt;p class=&quot;MsoNormal&quot;&gt;&lt;span style=&quot;font-size: 12pt\; line-heig
 ht: 107%\; font-family: arial\, helvetica\, sans-serif\;&quot;&gt;Most of the 430 
 MHz 96 foot line feed antenna broke off and fell through the dish in 2017 
 during Hurricane Maria.&lt;span style=&quot;mso-spacerun: yes\;&quot;&gt;&amp;nbsp\; &lt;/span&gt;Th
 en in December 2020\, the platform fell into the dish destroying large sec
 tions of the dish and the equipment in the platform. &lt;/span&gt;&lt;/p&gt;\n&lt;p class
 =&quot;MsoNormal&quot;&gt;&lt;span style=&quot;font-size: 12pt\; line-height: 107%\; font-famil
 y: arial\, helvetica\, sans-serif\;&quot;&gt;There is so much more to tell about t
 he engineering at Arecibo that will be the subject of this presentation.&lt;/
 span&gt;&lt;/p&gt;\n&lt;p class=&quot;MsoNormal&quot;&gt;&lt;span style=&quot;font-size: 12pt\; line-height
 : 107%\; font-family: arial\, helvetica\, sans-serif\;&quot;&gt;Dinner will consis
 t of:&lt;/span&gt;&lt;/p&gt;\n&lt;div&gt;\n&lt;ul&gt;\n&lt;li&gt;Chicken Bruschetta&lt;/li&gt;\n&lt;li&gt;Garden Sal
 ad&lt;/li&gt;\n&lt;li&gt;Roasted Garlic Mashed Potatoes&lt;/li&gt;\n&lt;li&gt;Honey Roasted Carrot
 s&lt;/li&gt;\n&lt;li&gt;Assorted Dinner Rolls&lt;/li&gt;\n&lt;li&gt;Brownies&lt;/li&gt;\n&lt;/ul&gt;\n&lt;p&gt;Parki
 ng for the event is free and is in the parking lot south of the library. S
 ee the below map of the PSU Harrisburg for an overview on where the buildi
 ng and parking is located.&lt;/p&gt;\n&lt;p&gt;There is a fee for the entire dinner+pr
 esentation event. There is no fee for only attending the presentation.&lt;/p&gt;
 \n&lt;/div&gt;&lt;br /&gt;&lt;br /&gt;Agenda: &lt;br /&gt;&lt;p&gt;Dinner: 6:00 - 7:00 PM&lt;/p&gt;\n&lt;p&gt;Presen
 tation: 7:00 - 8:30 PM&lt;/p&gt;
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