FO-29 蝕の開放


● (No.653) FO-29 蝕の開放 (2010年1月16日)
 -----------------------------------------

《JARL》2010年1月から 2月にかけて日陰率が急激に変化しますが、充放電制御
回路に不具合が発生しているため連続運用の可能性は低いと思われます。しかし
二年ほど前のような自然治癒の可能性も有りますので、暫定的な運用計画を作成
して運用を行います。電力収支に余裕が出てきた場合には運用計画を見直ししま
す。運用は下記の日時に送信機を ON にして、UVC で OFF になるまでです。

アナログ系中継器の利用は制限しませんが、適正な電力でのアップリンクをお願
い致します。試験運用の状況によっては翌日の運用を中止することもあります。


《英訳 by JE9PEL/1》

FO-29 should come out of the eclipse soon, Feb. 2010.
JARL still are making an effort hard the examination use.

JARL says: The eclipse rate of FO-29 suddenly changes from January to
February 2010, but it seems that the possibility of consecutive operation
is low, because the malfunction occurs in the battery control circuit.

But we make a temporary operative plan and operate it, because there is
the possibility of the spontaneous cure to be before approximately 2 years.
When the surplus occurred for the electricity income and expenditure,
we review an operative plan and do it.

In other words, FO-29 may not remain operational after eclipses due to
power budget issues but operations are planned according to the following
schedule when the satellite will be turned ON.

It is operated until time to be OFF by UVC after a transmitter turned ON
on the following date and time.

 Jan.  UTC
  16   21:00-
  22   22:33-
  24   10:35-
  29   21:25-
  31   09:30-

 Feb.  UTC
   5   22:00-
   7   10:00-
  11   11:40-
  12   20:53-
  14   10:40-

It does not limit the use of the analog system transponder, but
please do uplink with the reasonable power. We may cancel the use
of the next day depending on the status of the examination use.

Please use as low power as necessary on the uplink to complete
your communications.


----------------------------------------------------------------------
Subject: [amsat-bb] Re: FO-29 schedule Jan, Feb.
From: Andrew
Date: Thu, 14 Jan 2010 13:08:25 -0500

As I understand it from Mineo's postings, when the battery voltage on
FO-29 hits a certain set point the satellite turns off. By design it
should turn back on when the voltage recovers, but that part is
malfunctioning. This makes it impossible to accurately determine how
long the transponder will stay on, because it is dependent on use as
well as other parameters.

For those that remember FO-20's last months of operation, the
transponder would often be on until someone used too much power on the
uplink, or there were too many users and it would then shut off. Later
as the voltage recovered it would turn back on. At the end it was only
operational while illuminated. I think FO-29 is behaving the same way,
except it requires command intervention to turn back on.

Is this essentially correct Mineo?

73, Drew KO4MA
----------------------------------------------------------------------


The TX will be ON till the Voltage Controller (UVC) decided to switch OFF.
Now FO-29 is still in eclipses.

For example, if the TX will be switched on at 2100 UTC on Jan 16, then
it will be switched off by UVC at about 21:24 UTC due entering the eclipse.
I understand it from the chart below.

Black boxes are the eclipses. Yellow means sunlight (percent of illumination).
You can see that FO-29 is not free of eclipses but they are getting more
and more shorter.

FO-29 will be switched on after a eclipse and UVC will switch off if the
satellite enters the eclipse (a black box). And you can see the last eclipse
will be on Feb 08 at 00:15 UTC -> after then we have no eclipses anymore.

You can also use a satellite software like Orbitron to simulate the orbit
and the satellite illumination.

Tnx. DK3WN, Mike

JE9PEL, Mineo Wakita






オランダ局とベルギー局の間で、『2010年1月16日 21:26UTC からのパスで交信
ができた』という報告がありました。

Subject: [amsat-bb] Re^2: FO-29 schedule Jan, Feb.
From: PE0SAT
Date: Sat, 16 Jan 2010 23:21:57 +0100

On Sat, January 16, 2010 12:41, Mineo Wakita wrote:

Hello Mineo Wakita

Thanks for all the information regarding FO-29

> If the TX will be switched on at 2100 UTC on Jan 16,
> then it will be switched off by UVC at about 21:24 UTC due entering
> the eclipse.

It didn't switch off :) in JO21ho the pass began on 22:26CEST (21:26UTC)
and the old lady was loud and clear during the entire pass.

Here is a recording from that pass:

http://www.ham.vgnet.nl/downloads/FO-29-16012010-2226CEST.mp3

The first 2 minutes there is Beacon CW information and after that a QSO
I had with ON5NY.

73 Jan - PE0SAT


《JARL》

ふじ3号(FO-29)の現状 (2010年01月29日)

「ふじ3号」(FO-29) は、2009年11月上旬にバッテリーの充電が正常にできてい
ない現象等が確認されたことから連続運用を中止し、運用計画を作成したスケジ
ュール運用おこなってまいりました。

管制局からは1月27日11:33(UTC) に確認試験のため、JTA (アナログ中継器) ON
のコマンドを送信し、その後コマンド操作をおこなっておりませんが、JH1EKH/1,
JR8LWY, VK5HI の各局から「ふじ3号が動いている!」とのレポートをいただい
ており、1月27日にアナログ中継器を ON にしてから、連続で動いていた可能性
があります。

日陰率の減少により電力収支が改善されたものと考えられ、アナログ系中継器が
運用を継続している模様ですが、「ふじ3号」の動作の現状をさらに正確に把握
する必要があることから、27日11:33(UTC) 以降、28日19:20(UTC) までのテレメ
トリーや動作状態に関する情報をお持ちの方がおられましたら、JARL技術課まで
一報をお願いいたします。

また「ふじ3号」は一定の電力を下回ると UVC により送信機が自動的に OFF に
なりますが、万一、OFF になった瞬間を確認された方は、その日時を技術課まで
お知らせくださいますようお願いいたします。

なお、運用中の「ふじ3号」のアナログ系中継器の利用は特に制限しませんが、
適正な電力でのアップリンクをお願いいたします。

【JARL技術課】lab (アットマーク)jarl.or.jp


17:20UTC, 28Jan2010 received by DK3WN
battery voltage dropped down from 13.7 to 10.9 volts during the pass

HI HI 20 02 88 D5 00 84 00 00 09 60 01 01 01 81 7F 82 8E 8C 96 99 97 92 97
HI HI 20 02 88 D5 00 84 00 00 09 60 01 01 01 81 7E 82 7D 45 97 99 97 93 97
HI HI 20 02 88 D5 00 84 00 00 09 60 01 01 01 80 7C 81 8C 44 97 99 97 93 97
HI HI 20 02 88 D5 00 84 00 00 09 60 01 01 01 80 7B 80 8B 7A 97 9A 98 93 97
HI HI 20 02 88 D5 00 84 00 00 09 60 01 01 01 7F 79 7F 8A 7B 97 9A 98 93 97
HI HI 20 02 88 D5 00 84 00 00 09 60 01 01 01 80 76 7E 89 86 97 9A 98 94 96
HI HI 20 02 88 D5 00 84 00 00 09 60 01 01 01 81 70 7A 85 83 97 9A 98 94 96
HI HI 20 02 88 D5 00 84 00 00 09 60 01 01 01 80 66 76 81 7A 98 9A 98 95 96
HI HI 20 02 88 D5 00 84 00 00 09 60 01 01 01 80 65 76 81 81 98 9A 98 95 96








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