LO-19 蝕の瞬間

● (No.797) LO-19 蝕の瞬間 (2013年6月10日)

Subject: [amsat-bb] LUSAT-1 Heard
From: Amsat Argentina, LU7AA
Date: Sat, 8 Jun 2013 17:00:58 -0700 (PDT)

LUSAT-1 (LO-19) CW Beacon on 437.125 KHz quit transmiting on Dec-2012 after
23 years of operation, only a very weak carrier from local osc could be copied.

Recent reports state that LUSAT was again heard, today we received a regular
signal compatible with LUSAT on 437.125 +/- Doppler in two passes.

By the strong level and QRG of the signal it corresponds to LUSAT.

Modulation is CW without a morse logic, just some dots, regular spaces and
sometime a dash, no information is decoded, not always the same sequence or

Waterfall at http://amsat.org.ar/lusatsdr.jpg
Audio at     http://amsat.org.ar/lusat2013.mp3

Any further heard or reports appreciated.

Amsat Argentina, LU7AA


Subject: LO-19 Signal Stop ?
From: Mineo Wakita, JE9PEL/1
Date: Sat, 10 Jun 2013 01:46:00 +0900 (JST)

LO-19, 00:56JST, 10 Jun 2013 に突然、信号がストップしました。




Subject: LO-19 Signal Stop #2
From: Mineo Wakita, JE9PEL/1
Date: Sat, 10 Jun 2013 19:46:00 +0900 (JST)

Illum.exeソフト (by DK3WN) で確認すると、2013年6月10日00:56JST は、LO-19
が日本上空で蝕に入る、まさにその瞬間の時刻でした。LO-19 は、打ち上げから
23年が経過しニッカドバッテリの充電放電が 122,140回も繰り返されて、もはや

I was examined using the Illum Software(by DK3WN) for the period of
Eclipse(Shadow) of LO-19. It was found that 15:56 UTC, 9 June 2013
was exactly the beginning of Eclipese over Japan.


On 9 Jun 2013,
> Hello Mineo,
> Looks like on 06/09/13 at 15:56 UTC LUSAT-1 (LO-19) over Japan,
> LUSAT entered shadow, please confirm if possible.
> Also given your valuable information, LO-19 seems to be operating
> only on solar panels due onboard nicad batteries after 23+ years
> and 122,140 charge/discharge cycles are not keeping charge anymore.
> Much appreciate your neat and useful audio and waterfall capture.
> Best 73,
> Amsat-Argentina, LU7AA

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