ChubuSat-2, ChubuSat-3 and Horyu-4 are expected to launch between 0845-0930 UT on Friday, February 12 into a 575 km, 31 degree inclination orbit.
Yasutaka Narusawa JR2XEA provides the following information on ChubuSat-2/3:
Nagoya University(NU) and Mitsubishi Heavy Industries(MHI) developed 50kg microsatellite ChubuSat-2(NU) and ChubuSat-3(MHI). These satellites have amateur VHF receiver and amateur UHF transmitter, and will be launched on Feb. 12 2016 from Tanegashima, Japan. Komaki Amateur SATCOM Club operates these satellites from Komaki, Japan.
After the satellite separation, each satellite will transmit UHF CW beacon message including battery voltage etc. which is very important information for our initial and critical operation. So we are very happy if you receive the CW beacon message and report to us email: firstname.lastname@example.org
In following web site, we show the information(frequency, format, TLE, etc.) about ChubuSat-2 and ChubuSat-3. If we have your report, we will show your report in this page.
Amateur Radio Information
The TLE assuming the launch time at 5:45 PM (JST) on Feb. 12 is as follows.
1 99999U 99999 16043.38029596 .00000000 00000-0 00000-0 0 00009
2 99999 031.0049 311.5958 0015871 289.3826 223.5942 14.99199091006371
The TLW will be updated.
★CW Beacon Information
The CW beacon (437.1MHz ASK) format of the ChubuSat-2 is as follows.
「CQ CQ CQ DE JJ2YPN JJ2YPN」
「S1 ** ** ** **」
** indicates reception level, voltage of the secondary battery ch1, ch2, and ch3 respectively.
「S2 ** ** ** **」
** indicates voltage of the secondary battery ch4, temperature of the secondary battery A and B, solar cell (+Z axis) current respectively.
(interval and repetition from the top)
Reception level, the secondary battery voltage and temperature, solar-paddle (+Z axis) current are converted from original ADC values (0~255 in the HEX format) to ASCII characters.
A correspondence table between ADC values and actual physical properties is available here.
If you receive the Morse message from ChubuSat-2, please let us know via the e-mail address: chubusat2 [at] frontier.phys.nagoya-u.ac.jp . The reception report will be updated in this page.
★HK Telemery Information
- Rate: 9600 bps
- Frequency: 437.100 MHz
- Modulation: GMSK
- Protocol: KISS
- Decode Sequence
- Receive KISS protocol packet data (2 packets/second)
- Detect and remove packet header(0xC0 0x10) and footer(0xC0)
- Inverse FEND transformation (0xDB+0xDC->0xC0，0xDB+0xDD->0xDB) into 492 bytes packet
- Divide the 492 bytes packet into four 123 bytes sub-packets
- Remove 16 bytes header and 3 bytes footer from each 123 bytes sub-packet into 104 bytes data
- Decode error-correcting code (source code) from each 104 bytes data into 71 bytes telemetry data (HK telemetry data)
- Contents of 71 bytes telemetry data
- Telemetry List
Notes : The telemetry list refers thermal sensor temperature
If you receive the HK telemetry data, it would be appreciated for providing us the data in KISS format (.kss).
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