衛星用 自作プログラム Q&A


● (No.194) 衛星用 自作プログラム Q&A (2000年2月6日)
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Fo29tlme, Sedtime, Techtime program Q&A
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Q1] Downloaded WISP32.zip file.
    How is step #6 completed ? Need better directions.

A1] Step #6 in 'wispinse.txt' is wrote:

         set tz=jst-9
         share /f:4096 /l:75
         path = c:\wisp

    You don't need to write these last two line commands in
    'autoexec.bat'. But you must write in 'tz=est+5 ' if you
    live in N.Y.

    Japan Standard Time (JST) is 9 hours fast from UTC(GMT),
    so 'tz=jst-9'.  Eastern Standard Time (EST) is 5 hours
    slow from UTC(GMT) ?


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Q2] Also: Downloaded FO-29tlme + VB40032.dll
    a] Operates with the three (3) test files just fine.
         BUT
    b] How does this tie together with WISP32 ?

A2] 'Fo29tlme.exe' program analyze automatically all digital
    telemetry data from FO-29 such as Current, Voltage, etc.
    This is a stand alone program that has no relation to 'WiSP'.


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Q3] What is telemetry frequency of F0-29 ?

A3] JAS-2 (FO-29)
    Voice/CW Mode JA
    Uplink   	145.900 to 146.000 MHz CW/LSB
    Downlink 	435.800 to 435.900 MHz CW/USB
    Operational, rotated with digital mode and digi-talker.

    Digital Mode JD
    Uplink     	145.850  145.870  145.910 MHz FM
    Downlink   	435.910 MHz 1200 baud BPSK
    Digitalker 	435.910 MHz
    Operational, rotated with analog mode and digi-talker.

    Feb  1 -  6th    '00    JD1200 mailbox
    Feb  7 - 21st    '00    JA
    Feb 22 - 27th    '00    JD1200 mailbox
    Feb 28 - Mar 5th '00    JA


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Q4] After you furnish the frequency---How is the signal
    recorded to a file in the PC ? OTHERWORDS---How does it
    all tie together ?

A4] You need to get and save FO-29 telemetry data firstly
    with the other communication program when it's 1200bps
    digital mode.  You need edit this data secondly. It's
    gave a detailed explanation on 'fo29tlme.txt' to edit.


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Q5] Beside satellites, presently do a lot of SSTV and have an
    elaborate relay controled system between radio[s] and PC,
    can I use that or do I have to use a TNC ? If so what kind
    found where ? I'm not into packet, nor do I understand it.

A5] I know nothing at all about the SSTV's equipment.
    But I think that you have to obtain TNC for getting packet.

    I use now 'TNC-241 and TMB-965'(TASCO) for all digital
    satellites such as AO-16, LO-19 (1200bps) and UO-22, KO-25,
    FO-29, TO-31, SO-33 (9600bps) etc.

    And all mode OK, ie FSK, PSK, JAS, RTTY, AMTOR, CW, FAX.
    'TMB-965' is G3RUH outside modem for 9600bps with TNC-241.
    But, these TNC-241 and TMB-965(TASCO) may be stop sale.
    These new version may be TNC-555(TASCO).


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Q6] Also downloaded the SEDTIME.zip---How and when is this
    used ? Don't understand that one at all !

A6] 'Sedtime.exe' is a program to calculate the 'RESET TIME'
    in SEDSAT(SO-33).  The program to receive the telemetry
    from SEDSAT is available as 'Sgs20.exe' on

         http://uah.seds.org

    Downlink   	437.910 MHz 9600 baud FSK

    The output format of this 'Sgs20.exe' is the followings.


    ....................................................
    | Mon, Day, Year, Hour, Min, Sec, Main Voltage, ...
    |   2,   2, 2000,    8,  37,  12,        21142, ...
    ....................................................

               .............................................
                ..., UpDays, UpHours, UpMinutes, UpSeconds |
                ...,    001,      00,        35:        00 |
               ...... ......................................


    It mean the received current date is 08:37:12UTC, 2 Feb 2000,
    and 'Uptime' is 1_day and 0_hour 35_min. 0_secs.

    Then you use 'Sedtime.exe' to calculate the 'RESET TIME'.


         ...................................................
         Input data:

                               Day   Hour   Minu.   Sec.
               Current Time      2      8     37     12
               Up Time           1      0     35      0


         Press OK_button,
         then Output data is calculated automatically below:


                               Day   Hour   Minu.   Sec.
               Reset Time:       1      8      2     12
         ...................................................


    Then We will know 'RESET TIME' is 08:02:12UTC, 1 Feb 2000.
    And we will not have to worry about the 24 hour conversion
    factors in this way.


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Q7] Information about the beacon from TechSat-1b(GO-32) ?

A7] TechSat-1b(GO-32) was launched 06:30UTC, 7 Jul 1998.
    Beacon is send every 30 seconds with 435.225MHz 9600bps FSK.

    You must get 'KISS file' befor the fact from the satellite
    with WiSP32.   Firstly check the followings setup in 'GSC'.


         GSC - Setup - Satellite Setup - GO-32 - Edit - 
               - MSPE Settings - Log Kiss frames
                                 Log telemetry frames - OK
        (again)- MSPE Settings - Log Kiss frames
                                 Log telemetry frames - OK


    I received the following KISS data on 16-Sept-98.
    And I debuged this KISS file with 'debug.exe' as below.

    ...........................................................
    245B:0100  63 6D 64 3A 4B 49 53 53-20 20 20 20 20 77 61 73
    245B:0110  20 4F 46 46 0D 63 6D 64-3A C0 00 0A 0B 15 00 8C
    245B:0120  01 49 07 FF 35 54 65 63-68 53 61 74 2D 56 37 2E
    245B:0130  32 00 44 00 00 00 00 1E-23 10 00 40 10 05 00 00
    245B:0140  00 00 00 61 0E 02 00 C0-C0 00 0A 0B 15 00 8C 01
    245B:0150  67 07 FF 35 54 65 63 68-53 61 74 2D 56 37 2E 32
    245B:0160  00 44 00 00 00 00 1E 23-10 00 40 10 05 00 00 00
    245B:0170  00 00 50 0E 02 00 C0 C0-00 0A 0B 15 00 8C 01 85

               cmd:KISS     was
                OFF.cmd:.......
               .I..5TechSat-V7.
               2.D.....#..@....
               ...a............
               g..5TechSat-V7.2
               .D.....#..@.....
               ..P.............
    ...........................................................


    JJ1WTK / Kazu Sakamoto analyzed as follows:

    0A 0B 15             ......(1)
    00 8C 01             ......(2)
    49 07 FF 35                   ......(3)
    54 65 63 68 53 61 74 2D 56 37 ......(4)
    2E 32 00 44 00 00 00 00 1E 23 10 00
    40 10 05 00 00 00 00 00 61 0E 02 00 ......(5)


    (1) addresses(extended) '0A 0B' and control field '15'..?
    (2) no idea. seemed to be always fixed.
    (3) the 4 bytes(32bits) '49 07 FF 35' is UNIX timestamp.
        '35FF0749' in hex means 'Wed Sep 16 00:33:13 UTC 1998'
    (4) always readable in ASCII. Fixed. This 10 bytes mean
        'TechSat-V7'.
    (5) may be an infomation. Almost all bytes seem to be fixed
        but for one. The value of the second bottom byte ( '61'
        in above example) changes often.
        no idea what does the each byte in section(2) & (5)
        mean respectively.

    Here is another example. 
    On the next transmission(30 seconds later above),

    0A 0B 15
    00 8C 01
    67 07 FF 35 ......means 'Wed Sep 16 00:33:43 UTC 1998'
    54 65 63 68 53 61 74 2D 56 37 ........means 'TechSat-V7'
    2E 32 00 44 00 00 00 00 1E 23 10 00
    40 10 05 00 00 00 00 00 50 0E 02 00

    And on the next day(00z 17-Sept-98),

    0A 0B 15
    00 8C 01
    53 54 00 36 ......means 'Wed Sep 17 00:14:11 UTC 1998'
    54 65 63 68 53 61 74 2D 56 37 ........means 'TechSat-V7'
    2E 32 00 44 00 00 00 00 1E 23 10 00
    40 10 05 00 00 00 00 00 5E 0E 02 00


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Q8] How is 'Techtime.exe' program used?

A8] This 'Techtime.exe' is a program to calculate the current
    time in the satellite TechSat-1b(GO-32). This progaram is
    wrote with Japanese language.

    In avobe, 35FF0749(hex) is 905905993(dec), so 10485 days
    and 33 minutes 13 seconds. That is to say, time is passed
    10485 days and 33 minutes 13 seconds since 1 Jan 1970.
    Therefore it is 00:33:13 UTC, 16 Sep 1998.

    Likewise, 35FF0767(hex) is 905906023(dec), so it's 00:33:
    43 UTC, 16 Sep 1998.

    'Techtime' program convert automatically into the current
    time from the hexadecimal data of eight figures.


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Name : JE9PEL/Mineo Wakita
Mail : je9pel@jamsat.or.jp
URL  : http://www.ne.jp/asahi/hamradio/je9pel/
QTH  : Yokohama Japan,  GL:PM95TJ
Date : Feb 5, 2000
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