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[jamsat-bb:5225] SEDSAT status Apr 13

今から1年半前の 1998年10月24日に打ち上げられた衛星SO-33(SEDSAT-1)が、

先日(4月13日)、そのデジタル送信機が リセットする瞬間のデータを、偶然に
受信することができました。(下記データ UpDays,UpHours,UpMinutes に注目)
アリゾナ大学の衛星プロジェクトマネージャの Lewicki氏らの指摘によると、
このデータの中の CDS_Boot と、SEASIS_State の数値変化が 注目すべき箇所
のようです。(その部分を下に抜粋。 全データは下記URLに登録済み)

Date: Sat, 15 Apr 2000 19:41:45 +0900
From: "M. Wakita" [je9pel@jamsat.or.jp]
To: telemetry@seds.org
Subject: SEDSAT telemetry Apr 13

[000413-JE9PEL.tlm with SGS20.EXE   http://uah.seds.org/]

Month, Day, Year, Hour, Minute, Second,  CDS Boot, SEASIS State,
    4,  13, 2000,    1,     43,      2,         1,            0,
    4,  13, 2000,    1,     46,      1,         1,            0,
    4,  13, 2000,    3,     30,      1,         0,            1,
    4,  13, 2000,    3,     31,      1,         0,            1,

                   ....., UpDays, UpHours, UpMinutes, UpSeconds
                   .....,    001,      01,        46,        00
                   .....,    001,      01,        49,        00
                   .....,    000,      00,        19,        00
                   .....,    000,      00,        20,        00

Date: Sat, 15 Apr 2000 07:20:30 PDT
From: "Jason Rupert" [jkrupert@hotmail.com]
To: je9pel@jamsat.or.jp
Subject: Re: SEDSAT telemetry Apr 13


Many thanks for the SEDSAT telemetry. We greatly appreciate your 
continuing efforts. Was the signal strong or weak? Our station is
still minus one TNC so we are dependent upon the kindness of other
amateur radio operators for telemetry.
Again thank you for your support.

Jason Rupert

Date: Sat, 15 Apr 2000 23:13:33 -0700
From: Chris Lewicki [chrisl@seds.org]
To: "M. Wakita" [je9pel@jamsat.or.jp]
CC: telemetry@seds.org,
    UA-SEDSAT [uasedsat@seds.org],
    SEDSAT [sedsat@seds.org]
Subject: Re: SEDSAT telemetry Apr 13

Hi Mineo,

Thanks for the data!  I hadn't seen SEDSAT data and was starting to
wonder if it had finally gave in, but your data shows otherwise!  
539 days (and maybe as many resets) and still going!

There are some interesting items in the April 13 data. I'm not the 
best to interpret them, but "CDS Boot" switches between 0 and 1 
(I think its usually 0).  The "SEASIS State" does the same.

From what I could quickly gather from a look at data from the 
beginning of the mission it looks like most of the temperatures,
voltages and currents are all mostly the same.

Anyway, thanks for the data and keep sending it when you get it.
I'd appreciate taking a look at a period of time since we haven't 
done that in a while.  It'd be nice to get an idea of how often its
rebooting, etc...

For those of you still interested in SEDSAT, the SEDSAT homepage has
moved to http://uah.seds.org/ -- However, the UAH folks are having 
network problems, so its not always accessible.

Christopher A. Lewicki  KC7NYV   626.230.6662
A Maintainer of SEDS.ORG
No project, no plan, just a graduate student and his thesis...

Name : JE9PEL/1 脇田
Mail : je9pel@jamsat.or.jp
URL  : http://www.asahi-net.or.jp/~EI7M-WKT/
QTH  : Yokohama, Japan
Date : Apr 16, 2000