May 2015 - AMSAT-BB - mailman.amsat.org

FUNcube-1 Mode changes
by Graham Shirville 24 May '15

24 May '15

Hi All, Just to confirm that FUNcube-1 was commanded back into autonomous mode this evening at around 22:00 UTC. We are planning on switching back to continuous Amateur Mode next weekend but will be making this change, exceptionally, during one of the Friday morning passes over Europe rather than in the evening. This is to enable the FUNcube development team to attend a meeting over the weekend. best 73 Graham G3VZV

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DUCHIFAT-1 registration is on
by Herzliya Science Center 24 May '15

24 May '15

Dear all, The registration process for DUCHIFAT-1 is open and functional. Please register and transmit your COMPRESSED APRS packets to the satellite. It might take us few days between satellite dumps according to the students schedule.. After successfull dumps all stations received by the satellite will appear on our site map, and a QSL card will be sent back.... The site contains several guides: 1. A walk through the registration process 2. Terms of use on how to use the satellite 3. How to configure the Byonics TinyTrak4 for generating the right packets 4. S/W and installation guide for telemetry decoding Link: http://www.h-space-lab.org good luck! 73 The HSC team

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Psat
by Sil 24 May '15

24 May '15

Bob, Yes, it was. The time stamp is UT, which is 20:46 local time (dark now, almost winter). None of my steerable antennas are up yet, following a move into the city. I copied PSAT on a ground plane with a short length (5 metres maybe) of thin coax to a FT857D. PSAT must have a good signal. Sil ZL2CIA On 25/05/15 03:01, Robert Bruninga wrote: > Thanks! > You are first one to send in data in the dark. > It is COLD... > Solar panels 835 and 838 =-6C > Battery at 822 = 4C > > But it must have been in the evening after sunset, because I think it gets > very cold before sunrise. > > Bob

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Nine CAS-3 satellites to launch in July
by M5AKA 24 May '15

24 May '15

Alan BA1DU has provided some additional information on the July launch and has confirmed that CAS-2A and CAS-2B, also with linear transponders, will be launched at a later date. Nine CAS-3 amateur radio satellites to launch in July http://amsat-uk.org/2015/05/24/nine-cas-3-ham-radio-satellites/ 73 Trevor M5AKA ---- AMSAT-UK http://amsat-uk.org/ Twitter https://twitter.com/AmsatUK Facebook https://facebook.com/AmsatUK ----

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PSAT
by Vincenzo Mone 24 May '15

24 May '15

Hi to the list, this morning i had a pass of the PSAT. I could hear it on 435.350 MHz, with the Funcube Dongle Pro Plus, but couldn't understand how to decode it. I've tried in USB and could hear a sound that could not understand it Also tried in FM but could hear just the background noise. Please anybody can tell me where to listen? Frequency and mode and also which program to use to decode it? Any help will be really appreciated. 73's de Enzo IK8OZV EasyLog 5 BetaTester EasyLog PDA BetaTester WinBollet BetaTester D.C.I. CheckPoint Regione Campania Skype: ik8ozv8520 ********************************** ******* GSM +39 328 7110193 ******* ****** SMS +39 328 7110193 ****** *** 2nd e-mail: vimone(a)tin.it *** *********************************

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PSAT Launch
by Robert Bruninga 24 May '15

24 May '15

Expect first PSAT pass over USA about 1414 EDT (1314 CDT.) Weak signal on 145.825 APRS packet coming from pacific, over Texas and across the North East. Also need to capture 9600 packets on 437.975 and 437.475 Email to lastname(a)usna.edu Bob Bruninga, WB4APR

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PSAT and Bricsat FM PSK on same frequencies
by Tom schuessler 24 May '15

24 May '15

Okay so I am a bit confused about how this will work with two satellites both using FM modulation on the same frequency. FM has the capture ratio effect which basically means that if one signal is about twice as strong as the other that signal will capture the receiver and the other one may make a little background noise but won't be properly demodulates. If both of them are received at the same power level pretty much you just get noise a.k.a. SO-50 on a crowded day. So if these two satellites are transmitting simultaneously whichever one happens to be stronger at the moment will capture the receiver. Regardless of whether one of them has a audio frequency modulated on the carrier at 315 hertz while the other ones at 375 you're most likely going to not here both of them simultaneously Heard or displayed on a PSK waterfall. This may not be an issue in the future as the satellites drift apart from each other but right now as it seems to me they are pretty darn close so if they were both on they would be in the beam width of any directional antenna. Aside from the frequency of the PSK carrier itself as modulated on the FM, I would also have to assume that the call sign of the PSK data beacon is hopefully different. The PSK I decoded this morning had a beacon call sign of W3ADO-5. I would have to assume there is a different beacon call sign for both. In my reading I have not seen what the difference between the two would be. Looking forward to soon trying to test an uplink on 28.120 and see if I can hear myself. This looks like a good challenge. 73. Tom. N5HYP

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KX9X/2 QRV So50 Sunday 1730z
by Sean Kutzko 24 May '15

24 May '15

Hi all- I'll be on SO50 from FN22 again today from 1730-1745z. This is a 50 degree westerly pass for me, and probably the last pass I will do from FN22. Hope to work you. Sent from Sean's iPad

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PSAT
by Mvivona 24 May '15

24 May '15

Heard a nice strong pass of PSAT this morning over Florida at 12:35Z. Handheld with Arrow antenna. No decode setup yet. The IOS app "GoSatWatch" tracked it perfectly on its way over. I plan on having decode setup for the next high pass. Michael Vivona Sent from my iPad

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Re: [amsat-bb] CAMSAT announces mid-July launch with six U/V transponders
by Simon Brown 24 May '15

24 May '15

Ah, Reading the full press release I see they are LEOs. Must learn to read proper. Simon Brown G4ELI http://v2.sdr-radio.com -----Original Message----- From: AMSAT-BB [mailto:[email protected]] On Behalf Of Douglas Phelps Woo Hoo

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