CAMRAS DSLWP data

This page contains raw IQ data from the Chinese DSLWP satellite observed with the Dwingeloo Telescope.

Satellite Observation Freq Observers Notes
DSLWP-B 2018-06-03T02:39:45 436.4 Cees Bassa and Jan van Muijlwijk USRP B200, internal clock, 2Msps at 436MHz, complex floats
DSLWP-B 2018-06-03T02:44:45 436.4 Cees Bassa and Jan van Muijlwijk USRP B200, internal clock, 2Msps at 436MHz, complex floats
DSLWP-B 2018-06-03T02:49:45 436.4 Cees Bassa and Jan van Muijlwijk USRP B200, internal clock, 2Msps at 436MHz, complex floats
DSLWP-B 2018-06-03T02:54:45 436.4 Cees Bassa and Jan van Muijlwijk USRP B200, internal clock, 2Msps at 436MHz, complex floats
DSLWP-B 2018-06-03T02:59:45 436.4 Cees Bassa and Jan van Muijlwijk USRP B200, internal clock, 2Msps at 436MHz, complex floats
DSLWP-B 2018-06-03T03:04:45 436.4 Cees Bassa and Jan van Muijlwijk USRP B200, internal clock, 2Msps at 436MHz, complex floats
DSLWP-B 2018-06-03T03:09:45 436.4 Cees Bassa and Jan van Muijlwijk USRP B200, internal clock, 2Msps at 436MHz, complex floats
DSLWP-B 2018-06-03T03:14:45 436.4 Cees Bassa and Jan van Muijlwijk USRP B200, internal clock, 2Msps at 436MHz, complex floats
DSLWP-B 2018-06-03T03:19:45 436.4 Cees Bassa and Jan van Muijlwijk USRP B200, internal clock, 2Msps at 436MHz, complex floats
DSLWP-B 2018-06-03T03:24:45 436.4 Cees Bassa and Jan van Muijlwijk USRP B200, internal clock, 2Msps at 436MHz, complex floats
DSLWP-B 2018-06-03T03:29:45 436.4 Cees Bassa and Jan van Muijlwijk USRP B200, internal clock, 2Msps at 436MHz, complex floats
DSLWP-B 2018-06-08T05:54:45 436.4 Cees Bassa and Paul Boven USRP B200, internal clock, 2Msps at 436MHz, complex floats
DSLWP-B 2018-06-08T05:59:45 436.4 Cees Bassa and Paul Boven USRP B200, internal clock, 2Msps at 436MHz, complex floats
DSLWP-B 2018-06-08T06:04:45 436.4 Cees Bassa and Paul Boven USRP B200, internal clock, 2Msps at 436MHz, complex floats
DSLWP-B 2018-06-08T06:09:45 436.4 Cees Bassa and Paul Boven USRP B200, internal clock, 2Msps at 436MHz, complex floats
DSLWP-B 2018-06-08T06:14:45 436.4 Cees Bassa and Paul Boven USRP B200, internal clock, 2Msps at 436MHz, complex floats
DSLWP-B 2018-06-08T06:19:45 436.4 Cees Bassa and Paul Boven USRP B200, internal clock, 2Msps at 436MHz, complex floats
DSLWP-B 2018-06-08T06:24:45 436.4 Cees Bassa and Paul Boven USRP B200, internal clock, 2Msps at 436MHz, complex floats
DSLWP-B 2018-06-08T06:29:45 436.4 Cees Bassa and Paul Boven USRP B200, internal clock, 2Msps at 436MHz, complex floats
DSLWP-B 2018-06-08T06:34:45 436.4 Cees Bassa and Paul Boven USRP B200, internal clock, 2Msps at 436MHz, complex floats
DSLWP-B 2018-06-08T06:39:45 436.4 Cees Bassa and Paul Boven USRP B200, internal clock, 2Msps at 436MHz, complex floats
DSLWP-B 2018-06-08T06:44:45 436.4 Cees Bassa and Paul Boven USRP B200, internal clock, 2Msps at 436MHz, complex floats
DSLWP-B 2018-06-10 package frames 435.4 Jan van Muijlwijk, Tammo Jan Dijkema, Wang Cheng, Cees Bassa USRP B210, GPSDO, 40ksps at 435.4MHz and 436.4MHz, complex floats with meta header
DSLWP-B 2018-06-10 package frames from Shahe 435.4 MingChuan Wei, Shahe telescope USRP B210, onboard GPSDO, 40ksps at 435.4MHz and 436.4MHz, complex floats with meta header
DSLWP-B 2018-07-14T07:05:42 435.4 Cees Bassa, Tammo Jan Dijkema and Jan van Gils USRP B200, internal clock, 40ksps at 435.4MHz, complex floats
DSLWP-B 2018-07-14T07:31:45 436.4 Cees Bassa, Tammo Jan Dijkema and Jan van Gils USRP B200, internal clock, 40ksps at 436.4MHz, complex floats
DSLWP-B 2018-07-14T07:41:24 435.4 Cees Bassa, Tammo Jan Dijkema and Jan van Gils USRP B200, internal clock, 40ksps at 435.4MHz, complex floats
DSLWP-B 2018-07-14T07:49:48 436.4 Cees Bassa, Tammo Jan Dijkema and Jan van Gils USRP B200, internal clock, 40ksps at 436.4MHz, complex floats
DSLWP-B 2018-07-14T08:02:00 435.4 Cees Bassa, Tammo Jan Dijkema and Jan van Gils USRP B200, internal clock, 40ksps at 435.4MHz, complex floats
DSLWP-B 2018-07-14T08:09:45 435.4 Cees Bassa, Tammo Jan Dijkema and Jan van Gils USRP B200, internal clock, 40ksps at 435.4MHz, complex floats
DSLWP-B 2018-07-14T08:11:59 435.4 Cees Bassa, Tammo Jan Dijkema and Jan van Gils USRP B200, internal clock, 40ksps at 435.4MHz, complex floats
DSLWP-B 2018-07-14T08:29:48 435.4 Cees Bassa, Tammo Jan Dijkema and Jan van Gils USRP B200, internal clock, 40ksps at 435.4MHz, complex floats
DSLWP-B 2018-07-14T08:40:18 435.4 Cees Bassa, Tammo Jan Dijkema and Jan van Gils USRP B200, internal clock, 40ksps at 435.4MHz, complex floats
DSLWP-B 2018-07-14T07:05:42 436.4 Cees Bassa, Tammo Jan Dijkema and Jan van Gils USRP B200, internal clock, 40ksps at 436.4MHz, complex floats
DSLWP-B 2018-07-14T07:31:45 436.4 Cees Bassa, Tammo Jan Dijkema and Jan van Gils USRP B200, internal clock, 40ksps at 436.4MHz, complex floats
DSLWP-B 2018-07-14T07:41:24 436.4 Cees Bassa, Tammo Jan Dijkema and Jan van Gils USRP B200, internal clock, 40ksps at 436.4MHz, complex floats
DSLWP-B 2018-07-14T07:49:48 436.4 Cees Bassa, Tammo Jan Dijkema and Jan van Gils USRP B200, internal clock, 40ksps at 436.4MHz, complex floats
DSLWP-B 2018-07-14T08:02:00 436.4 Cees Bassa, Tammo Jan Dijkema and Jan van Gils USRP B200, internal clock, 40ksps at 436.4MHz, complex floats
DSLWP-B 2018-07-14T08:09:45 436.4 Cees Bassa, Tammo Jan Dijkema and Jan van Gils USRP B200, internal clock, 40ksps at 436.4MHz, complex floats
DSLWP-B 2018-07-14T08:11:59 436.4 Cees Bassa, Tammo Jan Dijkema and Jan van Gils USRP B200, internal clock, 40ksps at 436.4MHz, complex floats
DSLWP-B 2018-07-14T08:29:48 436.4 Cees Bassa, Tammo Jan Dijkema and Jan van Gils USRP B200, internal clock, 40ksps at 436.4MHz, complex floats
DSLWP-B 2018-07-14T08:40:18 436.4 Cees Bassa, Tammo Jan Dijkema and Jan van Gils USRP B200, internal clock, 40ksps at 436.4MHz, complex floats
DSLWP-B 2018-07-15T08:29:50 435.4 Cees Bassa, Tammo Jan Dijkema and Jan van Muijlwijk USRP B200, internal clock, 40ksps at 435.4MHz, complex floats
DSLWP-B 2018-07-15T08:50:49 435.4 Cees Bassa, Tammo Jan Dijkema and Jan van Muijlwijk USRP B200, internal clock, 40ksps at 435.4MHz, complex floats
DSLWP-B 2018-07-15T10:10:46 435.4 Cees Bassa, Tammo Jan Dijkema and Jan van Muijlwijk USRP B200, internal clock, 40ksps at 435.4MHz, complex floats
DSLWP-B 2018-07-15T08:29:50 436.4 Cees Bassa, Tammo Jan Dijkema and Jan van Muijlwijk USRP B200, internal clock, 40ksps at 436.4MHz, complex floats
DSLWP-B 2018-07-15T08:50:49 436.4 Cees Bassa, Tammo Jan Dijkema and Jan van Muijlwijk USRP B200, internal clock, 40ksps at 436.4MHz, complex floats
DSLWP-B 2018-07-15T10:10:46 436.4 Cees Bassa, Tammo Jan Dijkema and Jan van Muijlwijk USRP B200, internal clock, 40ksps at 436.4MHz, complex floats
DSLWP-B 2018-08-03T23:11:10 435.4 Cees Bassa, Tammo Jan Dijkema and Paul Boven USRP B200, internal clock, 40ksps at 435.4MHz, complex floats
DSLWP-B 2018-08-03T23:11:10 436.4 Cees Bassa, Tammo Jan Dijkema and Paul Boven USRP B200, internal clock, 40ksps at 436.4MHz, complex floats
DSLWP-B 2018-08-12T06:58:02 435.4 Cees Bassa and Paul Boven USRP B200, internal clock, 40ksps at 435.4MHz, complex floats
DSLWP-B 2018-08-12T06:58:02 436.4 Cees Bassa and Paul Boven USRP B200, internal clock, 40ksps at 436.4MHz, complex floats
DSLWP-B 2018-08-12T07:41:24 435.4 Cees Bassa and Paul Boven USRP B200, internal clock, 40ksps at 435.4MHz, complex floats
DSLWP-B 2018-08-12T07:41:24 436.4 Cees Bassa and Paul Boven USRP B200, internal clock, 40ksps at 436.4MHz, complex floats
DSLWP-B 2018-08-12T08:32:25 435.4 Cees Bassa and Paul Boven USRP B200, internal clock, 40ksps at 435.4MHz, complex floats
DSLWP-B 2018-08-12T08:32:25 436.4 Cees Bassa and Paul Boven USRP B200, internal clock, 40ksps at 436.4MHz, complex floats
DSLWP-B 2018-08-14T08:59:11 435.4 Cees Bassa and Paul Boven USRP B200, internal clock, 40ksps at 435.4MHz, complex floats
DSLWP-B 2018-08-14T08:59:11 436.4 Cees Bassa and Paul Boven USRP B200, internal clock, 40ksps at 436.4MHz, complex floats
DSLWP-B 2018-08-14T10:00:02 435.4 Cees Bassa and Paul Boven USRP B200, internal clock, 40ksps at 435.4MHz, complex floats
DSLWP-B 2018-08-14T10:00:02 436.4 Cees Bassa and Paul Boven USRP B200, internal clock, 40ksps at 436.4MHz, complex floats
DSLWP-B 2018-09-14T14:39:30 435.4 Cees Bassa and Tammo Jan Dijkema USRP B200, internal clock, 40ksps at 435.4MHz, complex floats
DSLWP-B 2018-09-14T14:39:30 436.4 Cees Bassa and Tammo Jan Dijkema USRP B200, internal clock, 40ksps at 436.4MHz, complex floats
DSLWP-B 2018-10-07T09:59:13 435.4 Cees Bassa and Tammo Jan Dijkema USRP B200, internal clock, 40ksps at 435.4MHz, complex floats
DSLWP-B 2018-10-07T09:59:13 436.4 Cees Bassa and Tammo Jan Dijkema USRP B200, internal clock, 40ksps at 436.4MHz, complex floats
DSLWP-B 2018-10-07T10:37:18 435.4 Cees Bassa and Tammo Jan Dijkema USRP B200, internal clock, 40ksps at 435.4MHz, complex floats
DSLWP-B 2018-10-07T10:37:18 436.4 Cees Bassa and Tammo Jan Dijkema USRP B200, internal clock, 40ksps at 436.4MHz, complex floats
DSLWP-B 2018-10-07T11:30:45 435.4 Cees Bassa and Tammo Jan Dijkema USRP B200, internal clock, 40ksps at 435.4MHz, complex floats
DSLWP-B 2018-10-07T11:30:45 436.4 Cees Bassa and Tammo Jan Dijkema USRP B200, internal clock, 40ksps at 436.4MHz, complex floats
DSLWP-B 2018-10-08T08:18:58 435.4 Cees Bassa and Tammo Jan Dijkema USRP B200, internal clock, 40ksps at 435.4MHz, complex floats
DSLWP-B 2018-10-08T08:18:58 436.4 Cees Bassa and Tammo Jan Dijkema USRP B200, internal clock, 40ksps at 436.4MHz, complex floats
DSLWP-B 2018-10-08T09:31:58 435.4 Cees Bassa and Tammo Jan Dijkema USRP B200, internal clock, 40ksps at 435.4MHz, complex floats
DSLWP-B 2018-10-08T09:31:58 436.4 Cees Bassa and Tammo Jan Dijkema USRP B200, internal clock, 40ksps at 436.4MHz, complex floats
DSLWP-B 2018-10-10T14:09:52 435.4 Cees Bassa and Tammo Jan Dijkema USRP B210, internal clock, 40ksps at 435.4MHz, complex floats (clock problems)
DSLWP-B 2018-10-10T14:09:52 436.4 Cees Bassa and Tammo Jan Dijkema USRP B210, internal clock, 40ksps at 436.4MHz, complex floats (clock problems)
DSLWP-B 2018-10-10T14:29:39 435.4 Cees Bassa and Tammo Jan Dijkema USRP B210, internal clock, 40ksps at 435.4MHz, complex floats (clock problems)
DSLWP-B 2018-10-10T14:29:39 436.4 Cees Bassa and Tammo Jan Dijkema USRP B210, internal clock, 40ksps at 436.4MHz, complex floats (clock problems)
DSLWP-B 2018-10-14T12:15:29 435.4 Cees Bassa and Tammo Jan Dijkema (and PE1NUT, PA7SB, PE2ZUT, Remco) USRP B200, internal clock, 40ksps at 435.4MHz, complex floats (gain adjustments)
DSLWP-B 2018-10-14T12:15:29 436.4 Cees Bassa and Tammo Jan Dijkema (and PE1NUT, PA7SB, PE2ZUT, Remco) USRP B200, internal clock, 40ksps at 436.4MHz, complex floats (gain adjustments)
DSLWP-B 2018-10-14T12:18:01 435.4 Cees Bassa and Tammo Jan Dijkema (and PE1NUT, PA7SB, PE2ZUT, Remco) USRP B210, internal clock, 40ksps at 435.4MHz, complex floats (gain adjustments; vertical polarization)
DSLWP-B 2018-10-14T12:18:01 436.4 Cees Bassa and Tammo Jan Dijkema (and PE1NUT, PA7SB, PE2ZUT, Remco) USRP B210, internal clock, 40ksps at 436.4MHz, complex floats (gain adjustments; vertical polarization)
DSLWP-B 2018-10-17T15:43:55 435.4 Tammo Jan Dijkema and PE1NUT USRP B210, internal clock, 40ksps at 435.4MHz, complex floats (gain adjustments)
DSLWP-B 2018-10-17T15:43:55 436.4 Tammo Jan Dijkema and PE1NUT USRP B210, internal clock, 40ksps at 436.4MHz, complex floats (gain adjustments)
DSLWP-B 2018-10-18T16:13:29 435.4 Tammo Jan Dijkema and PE1NUT (and PA0PZD) USRP B210, internal clock, 40ksps at 435.4MHz, complex floats
DSLWP-B 2018-10-18T16:13:29 436.4 Tammo Jan Dijkema and PE1NUT (and PA0PZD) USRP B210, internal clock, 40ksps at 436.4MHz, complex floats
DSLWP-B 2018-10-19T16:42:34 435.4 Tammo Jan Dijkema, Cees Bassa, PE1NUT and JOTA/JOTI crew USRP B210, GPSDO, 40ksps at 435.4MHz, complex floats, started with attenuator on...
DSLWP-B 2018-10-19T16:42:34 436.4 Tammo Jan Dijkema, Cees Bassa, PE1NUT and JOTA/JOTI crew USRP B210, GPSDO, 40ksps at 436.4MHz, complex floats, started with attenuator on...
DSLWP-B 2018-10-19T17:53:35 435.4 Tammo Jan Dijkema, Cees Bassa, PE1NUT and JOTA/JOTI crew USRP B200, internal clock, 40ksps at 435.4MHz, complex floats
DSLWP-B 2018-10-19T17:53:35 436.4 Tammo Jan Dijkema, Cees Bassa, PE1NUT and JOTA/JOTI crew USRP B200, internal clock, 40ksps at 436.4MHz, complex floats
DSLWP-B 2018-10-25T18:49:54 435.4 Tammo Jan Dijkema, Cees Bassa, PE1NUT USRP B200, internal clock, 40ksps at 435.4MHz, complex floats
DSLWP-B 2018-10-25T18:49:54 436.4 Tammo Jan Dijkema, Cees Bassa, PE1NUT USRP B200, internal clock, 40ksps at 436.4MHz, complex floats
DSLWP-B 2018-10-27T05:01:44 435.4 Tammo Jan Dijkema, PE1NUT USRP B210, GPSDO, 40ksps at 435.4MHz, complex floats
DSLWP-B 2018-10-27T05:01:44 436.4 Tammo Jan Dijkema, PE1NUT USRP B210, GPSDO, 40ksps at 436.4MHz, complex floats
DSLWP-B 2018-11-01T07:58:34 435.4 Tammo Jan Dijkema, Cees Bassa USRP B200, internal clock, 40ksps at 435.4MHz, complex floats
DSLWP-B 2018-11-01T07:58:34 436.4 Tammo Jan Dijkema, Cees Bassa USRP B200, internal clock, 40ksps at 436.4MHz, complex floats
DSLWP-B 2018-11-03T10:01:54 435.4 Tammo Jan Dijkema, Sigrid Witteveen, Jeroen Rijneker USRP B210, internal clock, 40ksps at 435.4MHz, complex floats
DSLWP-B 2018-11-03T10:01:54 436.4 Tammo Jan Dijkema, Sigrid Witteveen, Jeroen Rijneker USRP B210, internal clock, 40ksps at 436.4MHz, complex floats
DSLWP-B 2018-11-07T09:28:13 435.4 Tammo Jan Dijkema, Auke Klazema USRP B210, internal clock (?), 40ksps at 435.4MHz, complex floats, frequency lock issues
DSLWP-B 2018-11-07T09:28:13 436.4 Tammo Jan Dijkema, Auke Klazema USRP B210, internal clock (?), 40ksps at 436.4MHz, complex floats, frequency lock issues
DSLWP-B 2018-11-09T11:53:15 435.4 Paul Boven, Cees Bassa, Tammo Jan Dijkema CAMRAS backend, GPS-locked Rubidium, 40ksps at 435.4MHz, complex floats
DSLWP-B 2018-11-09T11:53:15 436.4 Paul Boven, Cees Bassa, Tammo Jan Dijkema CAMRAS backend, GPS-locked Rubidium, 40ksps at 436.4MHz, complex floats
DSLWP-B 2018-11-10T13:48:29 435.4 Paul Boven, Tammo Jan Dijkema CAMRAS backend, GPS-locked Rubidium, 40ksps at 435.4MHz, complex floats
DSLWP-B 2018-11-10T13:48:29 436.4 Paul Boven, Tammo Jan Dijkema CAMRAS backend, GPS-locked Rubidium, 40ksps at 436.4MHz, complex floats
DSLWP-B 2018-11-11T13:05 435.4 Paul Boven, Cees Bassa, Tammo Jan Dijkema CAMRAS backend, GPS-locked Rubidium, 40ksps at 435.4MHz, complex floats
DSLWP-B 2018-11-11T13:05 436.4 Paul Boven, Cees Bassa, Tammo Jan Dijkema CAMRAS backend, GPS-locked Rubidium, 40ksps at 436.4MHz, complex floats
DSLWP-B 2018-11-12T14:52 435.4 Paul Boven, Cees Bassa, Tammo Jan Dijkema CAMRAS backend, GPS-locked Rubidium, 40ksps at 435.4MHz, complex floats
DSLWP-B 2018-11-12T14:52 436.4 Paul Boven, Cees Bassa, Tammo Jan Dijkema CAMRAS backend, GPS-locked Rubidium, 40ksps at 436.4MHz, complex floats
DSLWP-B 2018-11-17T18:09 435.4 Paul Boven, Tammo Jan Dijkema CAMRAS backend, GPS-locked Rubidium, 40ksps at 435.4MHz, complex floats
DSLWP-B 2018-11-17T18:09 436.4 Paul Boven, Tammo Jan Dijkema CAMRAS backend, GPS-locked Rubidium, 40ksps at 436.4MHz, complex floats
DSLWP-B 2018-11-17T18:09 436.4 Paul Boven, Tammo Jan Dijkema Raw binary image data (pic5)
DSLWP-B 2018-11-17T18:09 436.4 Paul Boven, Tammo Jan Dijkema Raw binary image data (pic4)
DSLWP-B 2018-11-21T16:56 435.4 Paul Boven, Tammo Jan Dijkema, André Offringa CAMRAS backend, GPS-locked Rubidium, 40ksps at 435.4MHz, complex floats
DSLWP-B 2018-11-21T16:56 436.4 Paul Boven, Tammo Jan Dijkema, André Offringa CAMRAS backend, GPS-locked Rubidium, 40ksps at 436.4MHz, complex floats
DSLWP-B 2018-11-21T17:07 436.4 Paul Boven, Tammo Jan Dijkema, André Offringa Raw binary image data
DSLWP-B 2018-11-21 435.4 Paul Boven, Tammo Jan Dijkema, André Offringa USRP B210, GPSDO, 40ksps at 435.4MHz, complex floats with meta header
DSLWP-B 2018-11-21 436.4 Paul Boven, Tammo Jan Dijkema, André Offringa USRP B210, GPSDO, 40ksps at 436.4MHz, complex floats with meta header
DSLWP-B 2018-11-21 435.4 MingChuan Wei, Shahe telescope GPSDO, 40ksps at 435.4MHz, complex floats with meta header
DSLWP-B 2018-11-21 436.4 MingChuan Wei, Shahe telescope GPSDO, 40ksps at 436.4MHz, complex floats with meta header
DSLWP-B 2018-11-21 435.4 MingChuan Wei, Harbin station GPSDO, 40ksps at 435.4MHz, complex floats with meta header
DSLWP-B 2018-11-21 436.4 MingChuan Wei, Harbin station GPSDO, 40ksps at 436.4MHz, complex floats with meta header
DSLWP-B 2018-11-26T19:54 435.4 Paul Boven, Ard Hartsuijker CAMRAS backend, GPS-locked Rubidium, 40ksps at 435.4MHz, complex floats
DSLWP-B 2018-11-26T19:54 436.4 Paul Boven, Ard Hartsuijker CAMRAS backend, GPS-locked Rubidium, 40ksps at 436.4MHz, complex floats (should contain interesting JT4G)
DSLWP-B 2018-11-26T19:57 436.4 Paul Boven, Ard Hartsuijker Raw binary image data
DSLWP-B 2018-12-06T11:16 435.4 Tammo Jan Dijkema, Cees Bassa CAMRAS backend, GPS-locked Rubidium, 40ksps at 435.4MHz, complex floats
DSLWP-B 2018-12-06T11:16 436.4 Tammo Jan Dijkema, Cees Bassa CAMRAS backend, GPS-locked Rubidium, 40ksps at 436.4MHz, complex floats
DSLWP-B 2018-12-06T12:33 436.4 Tammo Jan Dijkema, Cees Bassa Raw binary image data
DSLWP-B 2018-12-07T08:08 435.4 Tammo Jan Dijkema, Auke Klazema CAMRAS backend, GPS-locked Rubidium, 40ksps at 435.4MHz, complex floats
DSLWP-B 2018-12-07T08:08 436.4 Tammo Jan Dijkema, Auke Klazema CAMRAS backend, GPS-locked Rubidium, 40ksps at 436.4MHz, complex floats (some JT4G near the end)
DSLWP-B 2018-12-07T08:09 436.4 Tammo Jan Dijkema, Auke Klazema Raw binary image data
DSLWP-B 2018-12-07 436.4 Tammo Jan Dijkema, Auke Klazema WAV extracts of individual JT4 transmissions (can be decoded straight by WSJTX)