October 2011 - AMSAT-BB - mailman.amsat.org

Oscar 16 How to use
by mm0kjg 05 Oct '11

05 Oct '11

Hello all. Can some please expalin how to use Oscar 16 Pacsat. Is it still working. my uplink is 145.900 Fm and 437.051 Usb downlink. I read somewhere that its double sideband?. If so can i receive Dsb on my Ic910 . Thanks Kev De Mm0kjg

2 1

AubieSat-1 launch rescheduled to 27 October, 2011
by Dominic Hildebrandt 04 Oct '11

04 Oct '11

Due to unforseen mechanical issues involving the launch vehicle hydraulic system and exhaust ducts, the launch date of AubieSat-1 has been postponed until 27 October, 2011. More specific details about the problem can be found here: http://www.nasa.gov/mission_pages/NPP/launch/index.html We will keep you informed if any additional changes are made to the launch. Sorry for the inconvenience.

1 0

Recognizing Boy Scout Activity
by Kevin Deane 04 Oct '11

04 Oct '11

WB5BSA on the ISS Digi... Kevin KF7MYK

1 0

CubeSat deployable solar panel prototype test
by Trevor . 04 Oct '11

04 Oct '11

ClydeSpace - This short video shows one of the first tests of our doubel deployed solar panel prototype. The system has an integrated thermal knife and driver and is designed to be CubeSat structure independant (i.e. the hinges and operation do not require structure modifications). The system has also passed tests at +80C and -40C. http://www.youtube.com/watch?v=_JVPh4g_Wi4 Also Former NASA engineer W5DID interviewed on ham radio space experiments http://www.dxcoffee.com/eng/2011/10/03/amateur-radio-nasa/ 73 Trevor M5AKA

1 0

Re: JUGNU and SRMSAT - October 12
by Sanjay Srikanth Nekkanti 04 Oct '11

04 Oct '11

Hi Bill, The ground station paper was written before the frequencies were coordinated by IARU. As mentioned by Mr. Mani the downlink frequency is 437.425 Mhz. Apparently the srmsat website is down for the past couple of months. The web-team is trying to get the website operational. 73 AB3OE, Sanjay Srikanth Nekkanti ------------------------------------------------------------- Erasmus Mundus Space Master (2012), Department of Space Science Luleå University of Technology Rymdcampus 1 SE-981 92, Kiruna, Sweden. Ph : +46738016907 Hi Bill and Dinesh, I was a part of the ISRO team that conducted the Thermal Vacuum, vibration and other environmental tests for both Jugnu and SRMSat. I was able to receive the signals from both the satellites, while they were here in my cetre during the above mentioned test. I even used Funcube Dongle to receive and decode the telemetry CW data. Frequencies: SRMSat: Payload down link and CW Beacon on the same frequency - 437.425 (10dbm) Jugnu: CW Beacon - 437.275 (17dbm) Pay load - 437.505 73 de Mani, VU2WMY Secretary & Station-In-Charge Upagrah Amateur Radio Club VU2URC ISRO Satellite Centre HAL Airport Road, Bangalore-560 017. Phone:(O)91-80-25082054/2598/2192 Mobile: 91-80-98803 41456 E-mail ID: wmy at isac.gov.in <http://amsat.org/mailman/listinfo/amsat-bb> vu2wmy_mani at yahoo.com <http://amsat.org/mailman/listinfo/amsat-bb> isrohams at yahoo.com <http://amsat.org/mailman/listinfo/amsat-bb> Quoting Bill Ress <bill at hsmicrowave.com <http://amsat.org/mailman/listinfo/amsat-bb>>: >* Hi Dinesh,*>**>* Perhaps some clarifications are in order.*>**>* The IARU has frequency coordinated SRMSAT at 437.425MHz for the down *>* link with no mention of coordination of the uplink. The link you *>* provided says the downlink is 434.5 MHz which puts it outside the *>* 435-438 MHz satellite band. Additionally, it mentions an uplink at *>* 145.8 MHz. right at the lower edge of the 145.8 to 146 MHz satellite *>* band.*>**>* The referenced web site, www.srmsat.in, is not functional, so recent *>* information is not available there. Do you have any other reference *>* links?*>**>* Regards...Bill - N6GHz*>**>**>**>* On 10/3/2011 7:54 AM, Dinesh Cyanam wrote:*>>* Sanjay Srikanth Nekkanti, AB3OE, confirmed that SRMSAT has passed all the*>>* required tests and is now at ISRO's spaceport, Sriharikota, ready for the*>>* Oct 12th launch.*>>* The downlink and ground station details for SRMSAT can be found on AB3OE's*>>* page here:*>>* http://srmuniv.academia.edu/SSN/Papers/149827/Ground_Station_Design_for_a_N…>>**>>* At the moment, I have no information about JUGNU. Will keep you all posted*>>* as and when I get more details.*>>**>>* 73*>>* Dinesh Cyanam*>>* KC2YQJ<dinesh at cyanam.net <http://amsat.org/mailman/listinfo/amsat-bb>>*>>**>>**>>**>>**>>>* Message: 7*>>>* Date: Mon, 26 Sep 2011 01:44:36 +0100 (BST)*>>>* From: "Trevor ."<m5aka at yahoo.co.uk <http://amsat.org/mailman/listinfo/amsat-bb>>*>>>* To: amsat-bb at amsat.org <http://amsat.org/mailman/listinfo/amsat-bb>*>>>* Subject: [amsat-bb] JUGNU and SRMSAT - Ootober 12 ?*>>>* Message-ID:*>>>* <1316997876.96255.YahooMailClassic at web27204.mail.ukl.yahoo.com <http://amsat.org/mailman/listinfo/amsat-bb>>*>>>* Content-Type: text/plain; charset=utf-8*>>>**>>>* JUGNU is listed on Gunters Space page with a possible launch date of*>>>* October 12. It's beacon frequency is given as 435.68 MHz*>>>**>>>* JUGNU Frequency*>>>* http://www.iitk.ac.in/me/jugnu/freq_coord.htm*>>>**>>>* SRMSAT is listed as being on the same launch and is understood to have a 2m*>>>* control uplink and 70cm downlink.*>>>**>>>* SRM University Ham Exam*>>>**>>>* http://chennaihams.blogspot.com/2010/03/asol-exam-conducted-at-srm-universi…>>>**>>>* 73 Trevor M5AKA* * *

3 2

Sat Magazine - Interorbital
by Trevor . 04 Oct '11

04 Oct '11

Article on Interorobitals Neptune launcher in the latest issue of Sat Magazine, see http://www.satmagazine.com/2011/SM_Oct_2011.pdf 73 Trevor M5AKA

1 0

Re: Ham Sats Dead?
by Clint Bradford 04 Oct '11

04 Oct '11

>> ... I don't think much of "education" as a reason for hamsats ... I am a school tech support volunteer for NASA and the ARISS program. I am glad to see that we received more than 100 applications for five slots for ISS contacts the first part of next year. That means there are more than 100 principals and more than 200 teachers who are exposing their thousands of students to this aspect of amateur radio. An upcoming ARISS contact in San Diego alone will have 480 students and 40 educators in the room. And there are many educators "using" and including the FM LEOs and related topics in their lesson plans. >> ... It had some value a few decades ago but much less now with an internet where kids can surf far more interesting information then whatever ham radio has to offer ... I hear this "The Internet is killing amateur radio ... " allegation all over the place. Never any facts or evidence is ever offered ... a great teacher can stimulate a classroom ,,, >> ... I was President of a local school board ... and while educators would take space station contacts because that is what they do...the educational value was rated as low...and I think it is ... Wow ... Why would a similar district have wonderful lesson plans and get excited about this technology for their students - while yours found it boring? >> ... Really there is "nothing" unique about talking to the astronauts on ISS using ham radio either directly or through a telebridge ... We're really on opposite sides here. You cannot tell that to the 600+ audiences of assembled kids that have participated in the ARISS contacts. Pick out ANY YouTube video of an ARISS project - and you will see joy on faces ... that suppressed excited applause when the ISS astronaut first responds ... and wild applause after the last transmission. I find it difficult to believe that a quality educator could make that experience boring and ordinary. >> ... Why is AMSAT floundering? Easy answer...they have no product that interest people with large investments in amateur satellite gear ... I didn't realize AMSAT was "floundering." But put that aside - No, we don't have a new HEO bird on HF for you. As soon as AMSAT can raise about US$550K for one, you can fire up your sat gear again. But there's a value in the LEOs - I have been invited to show 'em off more than 20 times each of the past four years to clubs and hamfests. There IS an interest in working the LEOs. >> ... and what they do they have proven functionally incompetent at ... I am just sitting here and smiling, knowing that AMSAT's "incompetent engineers" have AO-51 up and running at almost 900mW for us - that's with one dead battery cell, and another at about 0.1V ... running past its expected life expectancy. >> ... I should give them a pass on Suitsat2 because they dont have a clue about how to deal with the Russians...well thats more incompetence. >From what I researched on my own (as I am not on the ARISSat-1 team in any manner), I saw broken promises and unannounced/unexpected changes in scheduling/testing/deployment - hardly anything you could blame AMSAT for. But excuse me - I have another "Request for NASA Surveys" from another ARISS school contact that I need to send to NASA this evening ... And so it goes. Clint Bradford, K6LCS

1 0

Happy B-day, Sputnik!
by Clint Bradford 04 Oct '11

04 Oct '11

It was October 4, 1957, when the Russians successfully launched SPUTNIK. Clint Bradford

1 0

Explorer-1 Prime - how long is the tracking tone?
by Douglas Quagliana 04 Oct '11

04 Oct '11

According to the Explorer-1 Prime operations web page at http://ssel.montana.edu/e1p/operations/ the satellite will transmit a 2200 Hertz tracking tone before each FSK AX.25 packet is transmitted. What is the duration of the tracking tone? one second? ten seconds? Does anyone have a sample recordings of the tracking tone and beacon? Douglas KA2UPW/5

1 0

ISS Back on
by Kevin Deane 04 Oct '11

04 Oct '11

Looks like its back on AND I got a new cable for my TNC yeaaaa!!! Hope to see some people Not Beacons! Kevin KF7MYK

1 0