[amsat-bb] Re: CAPE-2 Keps

[Nick Pugh K5QXJ]

Hi all

5.1 v is essentially the battery voltage on our li cells which is very bad
news. We believe our charging scheme has failed and cooked our batteries. We
now think we have no battery capacity . The good news we can maintain a
positive power budget when we are in daylight. Please keep sending us your
signal reports


Thanks
 
nick      ARS K5QXJ EM30xa 30.1N 92.1W
Office   337 593 8700
Cell      337 258 2527
 
Helping UL become a world Class Engineering  and Educational School



-----Original Message-----
From: amsat-bb-bounces at amsat.org [mailto:amsat-bb-bounces at amsat.org] On
Behalf Of g0mrf at aol.com
Sent: Friday, December 06, 2013 6:06 PM
To: py4zbz at yahoo.com; amsat-bb at amsat.org
Subject: [amsat-bb] Re: CAPE-2 Keps


Hi Roland.

Nice data from CAPE-2.

Curious about the unregulated bus voltage around 5.2V.    
Doesn't seem to fit with a single or double Li poly cell. However, if it's
the output from 2 series solar cells, that might indicate the batteries are
fully charged and we are seeing the max power point tracker backing off
because nothing needs current. (hence the high voltage)

All speculation.  Sadly I need to be a few hundred miles further south to
get a decent elevation.

Thanks for the very interesting site.

Regards

David


-----Original Message-----
From: Roland Zurmely <py4zbz at yahoo.com>
To: AMSAT <amsat-bb at amsat.org>
Sent: Fri, 6 Dec 2013 23:14
Subject: [amsat-bb] CAPE-2 Keps


In the last 2 orbits, object 2013-064C in tle-new.txt from Celestrack is the
best match !

I decoded two AX25 framse in the 2 orbits:

1:Fm W5UL-15 To W5UL <UI F/C Pid=F0 Len=68> [19:02:26R]
+W5UL,CAPE-2,e,OR,201301282000CST,5101mV,01018,e,27C,32C,ulcape.org#

1:Fm W5UL-15 To W5UL <UI F/C Pid=F0 Len=68> [20:42:24R]
+W5UL,CAPE-2,e,OR,201301282004CST,5278mV,01019,e,28C,33C,ulcape.org#


73 de Roland PY4ZBZ
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