Scuola Universitaria Professionale della Svizzera Italiana

NASA-Catalog: 36799

Downlink

Bake 1 – 437.305 MHz, CW und Daten 1k2 AFSK, FM
Bake 2 – 145.980 MHz PSK, FM, Bake 2

Uplink

145.980 MHz, 1k2 AFSK FM

Call

HB9DE

Status

INACTIVE

Orbital Parameter

NORAD                   36799
COSPAR designator       2010-035-E  
Inclination             98.073
RA of A. Node           123.633
Eccentricity            0.0014585
Argument of Perigee     200.153
Revs per day            14.81515850
Period                  1h 37m 11s (97.18 min)
Semi-major axis         7 003 km
Perigee x Apogee        614 x 635 km
BStar (drag term)       0.000162100 1/ER
Mean anomaly            159.913

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CW Beacon Decoder, TIsat-1 Demodulator

CW Decoding table for TIsat-1 early beacon messages

During the early days of TIsat-1 mission, the beacon send continuously during the day the message “HI HI HI TISAT” followed by a Morse character indicating the temperature of the transmitter. The beacon is turned off during eclipse to avoid stress of the batteries. This message is repeated each 15s and is encoded with 17 WPM. The radio used as beacon has been developped completely in SUPSI with the help of local HAMs. The following table allows to translate the last character of the message into the relative temperature expressed in Celsius degrees.<(p>

Character      F   B   K   R   H   N   T   E   I   S   A   D   M   U   5   L
Temperature  -10  -5   0  +5 +10 +15 +20 +25 +30 +35 +40 +45 +50 +55 +60 +65

09:03 UTC – 09:07 UTC HI HI HI TISAT B HI HI HI TISAT B HI HI HI TISAT B HI HI HI TISAT B …
09:07 UTC – 09:11 UTC HI HI HI TISAT K HI HI HI TISAT K HI HI HI TISAT K HI HI HI TISAT K …

CW Bake am 18.07.2010

25.2 4.046 0.359 22.7 3.912 0.359 1.5 5.0 1.5 3.0 3.5 0.0 - 22.5-29.5.2 ...
... 3.912 0.359 1.5 5.0 1.5 3.03 k 

FM CW Telemetrie am 23.01.2011 – 21:16:05 UTC FM

TISat macht Musik

23.01.2011 - 21:47 UTC k k 
21:51 UTC music (2 times)
21:52 UTC vvv hb9de tisat1  k

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