DTUsat-2

DTUsat-2 stream 2.4GHz


I received all five 2.4 GHz signals from DTUsat-2 in the morning pass
on April 1, 2018. The wav file is the 4th signals that could be received
best in the following stream.
01:37-01:49 UTC, 1 Apr 2018, Ele 50 deg SE-E-N, 2401.843MHz CW
http://dl.dropbox.com/s/ddq2ofw8wzrvyjo/80401dt0.wav



    


I received again seven 2.4 GHz signals from DTUsat-2 in the morning pass
on April 4, 2018, it was difficult to capture the head of each frame.
02:13-02:25 UTC, 4 Apr 2018, Ele 56 deg S-W-WN, 2401.843MHz CW



      


01:42-01:54 UTC, 19 May 2018, Ele 56 SE-E-N, 2401.843MHz USB
DVB-T+FM+DAB, FMV LIFEBOOK AH30/B1 (Windows10/64bit), SDR#1664
http://dl.dropbox.com/s/0ljcqfirvn7mlu6/80519dt3.wav

 


02:34-02:46 UTC, 2 July 2018, Ele 34 S-W-WN, 2401.843MHz USB
DVB-T+FM+DAB, FMV LIFEBOOK AH30/B1 (Windows10/64bit), SDR#1664

    


DTUsat-2 CW 2.4GHz analysis sheet
http://www.ne.jp/asahi/hamradio/je9pel/dt2analy.xls




[Complement]  DTUsat-2 status from Project Manager, 13 Aug 2018 --------

 The satellite is still actively sending Morse beacons generated by the
 COM subsystem and occationally binary beacons generated by the onboard
 computer (OBC).

 For your information, I enclose a small note describing the format of
 the Morse beacon.  We believe that the two temperatures reported in the
 beacon are ok, but the battery voltage is not valid.

 The current frequency of the beacons is to our knowledge  2,401,860 kHz
 +-5 kHz.  Please let us know, if your equipment indicates otherwise.

 As the battery is not working, the satellite only transmits when the
 solar panels provide enough and consistent power.  Hence the beacon
 count is usually a very low number.  Often the beacon is cut of after
 only a few symbols.

 If you happen to receive a FSK signal sounding like a brief 580 Hz tone
 followed by a short scratch, this would be the OBC beacon. In that case,
 we would appreciate a report.

------------------------------------------------------------------------

10:51-11:03JST, 19 Nov 2018, Ele 56 SE-E-N, 2401.860MHz CW(USB)
I rceived DTUsat-2 after replacing the internal unit of GR2400 preamplifier.
http://dl.dropbox.com/s/bojeqvlaieflg3f/81119d12.wav