<div dir="ltr">Parabéns Eng. Miranda e colega.<div>Sempre na vanguarda!</div><div>Abraço</div><div>Esteves\CT1ADT</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">Miguel Pelicano <<a href="mailto:miguel.pelicano@gmail.com">miguel.pelicano@gmail.com</a>> escreveu no dia quarta, 23/09/2020 à(s) 06:36:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="auto"></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">---------- Forwarded message ---------<br>De: <strong class="gmail_sendername" dir="auto">Carlos</strong> <span dir="auto"><<a href="mailto:ct4bb@ct4bb.com" target="_blank">ct4bb@ct4bb.com</a>></span><br>Date: terça, 22/09/2020, 20:49<br>Subject: [Amateur-DSN] CT4BB & CT1XV DSN works<br>To: <<a href="mailto:Amateur-DSN@groups.io" target="_blank">Amateur-DSN@groups.io</a>><br>Cc: Georges AMARANTE <<a href="mailto:georges.amarante@wanadoo.fr" target="_blank">georges.amarante@wanadoo.fr</a>><br></div><br><br><div lang="PT"><div><p class="MsoNormal"><span lang="EN-US">Hi colleagues.<u></u><u></u></span></p><p class="MsoNormal"><span lang="EN-US">we don't know if there is interest on this, but here goes some information about what we, (CT4BB & CT1XV) are doing as newbies in DSN…<u></u><u></u></span></p><p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p><p class="MsoNormal"><span lang="EN-US">Yesterday at 1:41 am local time, until 2:00 am, the NASA (MRO) MARS RECONNAISSANCE ORBITER probe was received here at the CT4BB QTH dining room window.<u></u><u></u></span></p><p class="MsoNormal"><span lang="EN-US">MRO, having a strong signal of -105 dBm, I decided to try to receive it only with the Feed that was tested in the far field with the RF generator around 100 meters away which given a sensitivity of -130 dBm @ the feed mouth… ?<u></u><u></u></span></p><p class="MsoNormal"><span lang="EN-US">So, the IMU feed needs to be actually tested with space signals because it had only been tested in the field. <u></u><u></u></span></p><p class="MsoNormal"><span lang="EN-US">By 02:00 Local time I stopped receiving, MRO because it went beyond the window…<u></u><u></u></span></p><p class="MsoNormal"><span lang="EN-US">The frequency of the MRO probe at that time was: 8,437,484 GHz<u></u><u></u></span></p><p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p><p class="MsoNormal"><span lang="EN-US">A Tracker ( TRACKUINO ) was used, with a miniRotor made in 3D PLA printing. This miniRotor is only for testing the TRACKUINO but supports loads up to 1 Kg<u></u><u></u></span></p><p class="MsoNormal"><span lang="EN-US">The local oscillator is an ADF5355 at 8GHz and the MixerIR5 from Maki Microwave that gives an IF at 400MHz (420-460MHz).<u></u><u></u></span></p><p class="MsoNormal"><span lang="EN-US">Notes: <u></u><u></u></span></p><ol style="margin-top:0cm" start="1" type="1"><li style="margin-left:0cm"><span lang="EN-US">Although a tracker was used, the feed has enough openness to point the eye at Mars and receive the probe. I swept 20 ° to the left and to the right and continued receiving the MRO.<u></u><u></u></span></li><li style="margin-left:0cm"><span lang="EN-US">TRACKUINO is a space object tracker using Arduino Due. It reads an SD card with Ephemeris from the NASA Horizons site. Comparing real time clock with Ephemeris time it sends commands to the rotors when hours are equal.<u></u><u></u></span></li><li style="margin-left:0cm"><span lang="EN-US">For testing the TRACKUINO I designed in FUSION 360 a MiniRotor for 3D printing in PLA. This miniRotor have two DC motors for Azimuth and Elevation with switches and potentiometers to send position information to the ARDUINO.<u></u><u></u></span></li></ol><p><span lang="EN-US"><u></u> <u></u></span></p><p class="MsoNormal"><span lang="EN-US">We are new in DSN and have 7 phases in our DSN project . This is the 2th test phase.<u></u><u></u></span></p><p class="MsoNormal"><span lang="EN-US">See you later<u></u><u></u></span></p><p class="MsoNormal"><span lang="EN-US">CT4BB and CT1XV<u></u><u></u></span></p><p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p></div></div>
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