[amsat-bb] OT: 21.115 MHz DominoEX-22 Balloon Heading for USA
The 21.115 MHz DominoEX-22 Seba-6/Orient Express balloon launched from Poland on Saturday is on course for US Territory. Real time tracking of the balloon at http://spacenear.us/tracker/ Seba-6/Orient Express http://www.southgatearc.org/news/december2013/ham_radio_balloon_seba_6.htm Beginners Guide to Tracking using dl-fldigi http://ukhas.org.uk/guides:tracking_guide Check the #highaltitude IRC channel for chat about the launches http://webchat.freenode.net/?channels=highaltitude For information on balloon launches subscribe to the UKHAS Mailing List by sending a blank email to this address: ukhas+subscr...@googlegroups.com 73 Trevor M5AKA AMSAT-UK website http://amsat-uk.org/ Facebook https://www.facebook.com/pages/AMSAT-UK/208113275898396 Twitter https://twitter.com/AMSAT_UK ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Delfi-C3 and Delfi-n3Xt
They passed at the same time ! Please see here: http://www.qsl.net/py4zbz/Dn3Xt.htm#a 73 de Roland PY4ZBZ GH70un ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] MCube-2
For those trying to capture the Mcube-2 telemetry, it surely is a lot of fun downloading the 9k6 data at 70cm! The SW that the project team provides is really easy to use and looks nice. Cool demo for your friends when you want to show-case your involvement in Cubesats. With my modest set/up I can decode when the satellite is 20 degrees elevation. A note on the downlink frequency: the published frequency is 437.485MHz, but I have better results a few kHz lower: 437.480MHz. Success! Henk, PA3GUO ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: Funcube-1 is +10 kHz on the uplink?
Hi Henk, What you are seeing is the combined effect of various oscillators drifting over temperature and some static offsets present. It is not so easy to have these offsets quantified as static numbers. The oscillators were designed to be extremely low power, and temperature compensation is therefore limited. we do not have the power on board for PLL based frequency generation. With the current state of the art, this is possible, but not when the circuit was designed. The power budget of a one Unit CubeSat is challenging, and FUNcube is the first 1U CubeSat to include a linear transponder. At the moment we are nice and power positive, but the system was designed with the degradation of the battery and solar arrays in mind. So in the end, I am afraid you will have to guesstimate based on temperature. Wouter PA3WEG FUNcube transponder designer On Fri, Dec 27, 2013 at 10:05 PM, PA3GUO pa3...@upcmail.nl wrote: Just wondered if I saw this observed/reported already: When for the Funcube-1 transponder using: 435.140 MHz uplink (LSB) 145.960 MHz downlink (USB) I still need to add another 10kHz on the uplink (making it 435.150 MHz). Can anyone else confirm (or counter :-)) this ? Henk, PA3GUO The Netherlands ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: Funcube-1 is +10 kHz on the uplink?
Thanks for the explaination Wouter. It sure is a fantastic transponder! Henk, PA3GUO ps: indeed as stated everywhere: 5W uplink is more than enough for a strong downlink. Van: Wouter Weggelaar [mailto:wouter...@gmail.com] Verzonden: zondag 29 december 2013 22:53 Aan: PA3GUO CC: AMSAT-BB Onderwerp: Re: [amsat-bb] Funcube-1 is +10 kHz on the uplink? Hi Henk, What you are seeing is the combined effect of various oscillators drifting over temperature and some static offsets present. It is not so easy to have these offsets quantified as static numbers. The oscillators were designed to be extremely low power, and temperature compensation is therefore limited. we do not have the power on board for PLL based frequency generation. With the current state of the art, this is possible, but not when the circuit was designed. The power budget of a one Unit CubeSat is challenging, and FUNcube is the first 1U CubeSat to include a linear transponder. At the moment we are nice and power positive, but the system was designed with the degradation of the battery and solar arrays in mind. So in the end, I am afraid you will have to guesstimate based on temperature. Wouter PA3WEG FUNcube transponder designer On Fri, Dec 27, 2013 at 10:05 PM, PA3GUO pa3...@upcmail.nl wrote: Just wondered if I saw this observed/reported already: When for the Funcube-1 transponder using: 435.140 MHz uplink (LSB) 145.960 MHz downlink (USB) I still need to add another 10kHz on the uplink (making it 435.150 MHz). Can anyone else confirm (or counter :-)) this ? Henk, PA3GUO The Netherlands ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
