[amsat-bb] AO-95 Rx problem
Mac A. Cody
maccody at att.net
Mon Dec 17 20:22:53 UTC 2018
Thanks, Paul!
Latest version of FoxTelem downloaded and installed. I've downloaded
the data from the server and I'm now exploring and analyzing.
73,
Mac Cody / AE5PH
On 12/17/18 2:02 PM, Paul Stoetzer wrote:
> Mac,
>
> All of the telemetry can be downloaded and analyzed thoroughly through
> FoxTelem. There are a number of graphing and mapping features built in
> and all values can be exported to .csv files for analysis in other
> software.
>
> 73,
>
> Paul, N8HM
>
> On Mon, Dec 17, 2018 at 14:51 Mac A. Cody <maccody at att.net
> <mailto:maccody at att.net>> wrote:
>
> Interesting! Didn't know that data was available on line.
> Is there a more detailed presentation of the data in, say,
> a spreadsheet for a greater period of time than what
> is presented? This would be very helpful in performing
> any detailed analysis. Is all of the telemetry presented
> on the web page? All data would be valuable in trying
> to make any correlations.
>
> Where in the receive chain is the RSSI measured? Has
> an attempt been made yet to transmit a strong signal
> (modulated or unmodulated) during an overhead pass
> to try to 'nudge the needle' on the RSSI meter? Perhaps
> successively stronger transmissions could be made to
> see at what power level any change occurs in the RSSI
> without applying too much power. I recall someone
> mentioning approaching an EME operator to attempt
> transmitting at AO-95 with significantly more power than
> normal.
>
> Why does the 'Battery I32C' indicate 'FAIL' (although I see
> that this is the same for the other FOX satellites)?
>
> 73,
>
> Mac Cody / AE5PH
>
> On 12/17/18 1:02 PM, H. Stephen Nipper wrote:
> > Mac, you can look at the data coming down from the satellite and
> maybe
> > answer some of the questions that you asked. To my untrained
> eye it
> > appears that the solar panels are all working. I am sure that the
> > team understands that data and what it means more than me.
> >
> > http://www.amsat.org/tlm/health.php?id=3&port=
> >
> > So if you look at RSSI line you can see the receiver. Click on it.
> > It's flat line.
> >
> http://www.amsat.org/tlm/graph.php?sat=3&field=RSSI&raw=conv&reset=0&uptime=0&rows=100&port=8080
> >
> > On Mon, Dec 17, 2018 at 10:30 AM Mac A. Cody <maccody at att.net
> <mailto:maccody at att.net>
> > <mailto:maccody at att.net <mailto:maccody at att.net>>> wrote:
> >
> > I'm sure that this is being considered, but I'll extend the
> > thought anyway:
> > If there has been a collision that may have damaged or
> sheared off the
> > RX antenna, could other damage have occurred that might be
> > identifiable
> > via telemetry? What I'm thinking of is possible damage to
> one or more
> > solar cells. Would damage, perhaps resulting is reduced
> current flow
> > or voltage levels, be discernible through the telemetry? Are
> > there other
> > items of the surface of AO-95 that, if damaged, might reveal
> that
> > damage
> > through telemetry.
> >
> > Thanks to all the volunteers that have worked so hard to
> make the FOX
> > series an outstanding success!
> >
> > 73,
> >
> > Mac Cody / AE5PH
> >
> >
> > On 12/16/18 10:48 PM, Jerry Buxton wrote:
> > > Hi Francis,
> > >
> > > That is one thing we are looking into, handily I am well
> > acquainted with
> > > the ExseedSat team lead and since we were in the deployer next
> > to each
> > > other and performing the integration together we have
> discussed the
> > > possibility that we got to be too close friends somehow
> and are
> > still
> > > that way or perhaps remained too close even to the point
> of antenna
> > > deploy and perhaps interfered with each other's deploy. TLE
> > indicated
> > > separation is perhaps the only way to guesstimate that
> though.
> > If it
> > > gives us something to maybe model or relate to past
> missions, we
> > might
> > > be able to infer that a possible cause was that we may
> have been
> > close
> > > for a while up to and including our antenna deploy times and
> > something
> > > may have happened as a result of that. It would at least
> > provide one
> > > possible path to follow in looking for causes and maybe
> (and I mean
> > > MAYBE) a solution.
> > > Keep on watching for clues, thanks!
> > >
> > > Jerry Buxton, NØJY
> > >
> > > On 12/16/2018 15:30, Francis Geraci wrote:
> > >> First off, I do not want to "2nd guess" the Engineering team.
> > >>
> > >> JUst read the "post" that AO-95 was still very close to
> another
> > "object".
> > >>
> > >> I just was wondering, if AO-95 is TOO close to another
> > "object", maybe
> > >> "object" is "blocking" the RX antenna, or did RX antenna get
> > "knocked" off ?
> > >>
> > >> Opinions ? Everybody has them. HiHi
> > >>
> > >> Francis - W1FXX
> > >> _______________________________________________
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> > >>
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> > _______________________________________________
> > Sent via AMSAT-BB at amsat.org <mailto:AMSAT-BB at amsat.org>
> <mailto:AMSAT-BB at amsat.org <mailto:AMSAT-BB at amsat.org>>. AMSAT-NA
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> > to all interested persons worldwide without requiring
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> > views of AMSAT-NA.
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> >
> >
> > --
> > Stephen Nipper
> > Boise, Idaho
> > N7DJX
> >
> >
>
> _______________________________________________
> Sent via AMSAT-BB at amsat.org <mailto:AMSAT-BB at amsat.org>. AMSAT-NA
> makes this open forum available
> to all interested persons worldwide without requiring membership.
> Opinions expressed
> are solely those of the author, and do not reflect the official
> views of AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite
> program!
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