Informations radioamateurs

Beacon measurements

OUFTI-1 TLE available here (2016-025E).

Telemetries:

In visibility of Liège (Belgium), OUFTI-1 will transmit telemetries in AX.25 FSK (9600 bauds) at 145.950 MHz.

First flight over Liège scheduled between 06:05 and 06:12 AM

D-STAR transponder:

When D-STAR repeater will be active, the frequencies are 435.045 MHz for uplink and 145.950 MHz for downlink. More information will be available soon.

Morse beacon:

The beacon of OUFTI-1 transmits continuously 100mW at 145,980MHz, during 2 minutes every 3 minutes (2 min ON – 1 min OFF).

The beacon decoder software is available :

Beacon decoder software

For any trouble using the software: eb.ca1498343777.glu@14983437771-itf1498343777uo1498343777

If you want to decode the frame yourself, here is all you need:

Frame :

HI HI DE OUFTI1 X YY AA BB CC DD EE FF GG HH II JJ KK LL ZZ

X = µC speaking a or b
YY = Mode 00=Silence; 05=Default; 10=Safe; 15= D-STAR
AA = I_SOL Val*1000/(0,01*200)
BB = V_3.3 Val*(249+120)/249
CC = V_BUS Val*(249+210)/249
DD = I_3.3 Val*1000/(0,007*200)
EE = G_BAT1 Val*(249+180)/249
FF = V_RX Val*(249+120)/249
GG = T_PA Val-0,5)*100
HH = T_OBC Val-0,5)*100
II = G_BAT2 Val*(249+180)/249
JJ = I_RX Val*1000/(0,039*200);
KK = I_PA Val*1000/(0,006*200)
LL = T_BAT Val-0,5)*100
ZZ = checksum Modulo 256 of the addition of ascii number from X (µc) to LL (T_BAT)

The values are coded according to the following table :

Data Value Data Value Data Value Data Value
tt 0 ut 0,63492063 4t 1,26984127 6t 1,9047619
ta 0,03968254 ua 0,67460317 4a 1,30952381 6a 1,94444444
tu 0,07936508 uu 0,71428571 4u 1,34920635 6u 1,98412698
tv 0,11904762 uv 0,75396825 4v 1,38888889 6v 2,02380952
t4 0,15873016 u4 0,79365079 44 1,42857143 64 2,06349206
te 0,1984127 ue 0,83333333 4e 1,46825397 6e 2,1031746
t6 0,23809524 u6 0,87301587 46 1,50793651 66 2,14285714
tb 0,27777778 ub 0,91269841 4b 1,54761905 6b 2,18253968
at 0,31746032 vt 0,95238095 et 1,58730159 bt 2,22222222
aa 0,35714286 va 0,99206349 ea 1,62698413 ba 2,26190476
au 0,3968254 vu 1,03174603 eu 1,66666667 bu 2,3015873
av 0,43650794 vv 1,07142857 ev 1,70634921 bv 2,34126984
a4 0,47619048 v4 1,11111111 e4 1,74603175 b4 2,38095238
ae 0,51587302 ve 1,15079365 ee 1,78571429 be 2,42063492
a6 0,55555556 v6 1,19047619 e6 1,82539683 b6 2,46031746
ab 0,5952381 vb 1,23015873 eb 1,86507937 bb 2,5

Exemple:

hi hi de oufti1 a 05 e4 ba 6e tv tt ba uv uv tt ab tt uv a6

Value Result
X = µC speaking a a ou b a
YY = Mode 05 00=Silence; 05=Default; 10=Safe; 15= D-STAR Default
AA = I_SOL e4 = 1,74 Val*1000/(0,01*200) 873,02 mA
BB = V_3.3 ba = 2,26 Val*(249+120)/249 3,35 V
CC = V_BUS 6e = 2,10 Val*(249+210)/249 3,88 V
DD = I_3.3 tv = 0,12 Val*1000/(0,007*200) 85,03 mA
EE = G_BAT1 tt = 0 Val*(249+180)/249 0 V
FF = V_RX ba = 2,26 Val*(249+120)/249 3,35 V
GG = T_PA uv = 0,75 Val-0,5)*100 25,4 °C
HH = T_OBC uv = 0,75 Val-0,5)*100 25,4 °C
II = G_BAT2 tt = 0 Val*(249+180)/249 0 V
JJ = I_RX ab = 0,60 Val*1000/(0,039*200); 76,31 mA
KK = I_PA tt = 0 Val*1000/(0,006*200) 0 mA
LL = T_BAT uv = 0,75 Val-0,5)*100 25,4 °C
ZZ = checksum a6 = 166 hex to dec Rest of the division by 256 of the addition of ascii number from X (µc) to LL (T_BAT) = (97 + 48 + 53 + 101 + 52 + 98 + 97 + 54 + 101 + 116 + 118 + 116 + 116 + 98 + 97 + 117 + 118 + 117 + 118 + 116 + 116 + 97 + 98 + 116 + 116 + 117 + 118) % 256
= 2726 % 256
= 166 (decimal)
= a6 (hexa)
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Afrikaans
Albanian
Arabic
Armenian
Azerbaijani
Basque
Belarusian
Bengali
Bosnian
Bulgarian
Catalan
Cebuano
Chichewa
Chinese (Simplified)
Chinese (Traditional)
Croatian
Czech
Danish
Dutch
English
Esperanto
Estonian
Filipino
Finnish
French
Galician
Georgian
German
Greek
Gujarati
Haitian Creole
Hausa
Hebrew
Hindi
Hmong
Hungarian
Icelandic
Igbo
Indonesian
Irish
Italian
Japanese
Javanese
Kannada
Kazakh
Khmer
Korean
Lao
Latin
Latvian
Lithuanian
Macedonian
Malagasy
Malay
Malayalam
Maltese
Maori
Marathi
Mongolian
Myanmar (Burmese)
Nepali
Norwegian
Persian
Polish
Portuguese
Punjabi
Romanian
Russian
Serbian
Sesotho
Sinhala
Slovak
Slovenian
Somali
Spanish
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Swahili
Swedish
Tajik
Tamil
Telugu
Thai
Turkish
Ukrainian
Urdu
Uzbek
Vietnamese
Welsh
Yiddish
Yoruba
Zulu
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