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CX2SA > SATDIG 12.08.16 18:47l 838 Lines 31059 Bytes #999 (0) @ WW
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To : SATDIG@WW
Today's Topics:
1. FUNCube-1 (AO-73) Telemetry via FO-29?? (Scott)
2. Re: FUNCube-1 (AO-73) Telemetry via FO-29?? (Daniel Est?vez)
3. BIRDS CubeSat Constellation + ISS SSTV (M5AKA)
4. Re: FUNCube-1 (AO-73) Telemetry via FO-29?? (Zach Leffke)
5. Help Please with Simplesat (Joe)
6. Re: FUNCube-1 (AO-73) Telemetry via FO-29?? (Daniel Est?vez)
7. Re: FUNCube-1 (AO-73) Telemetry via FO-29?? (Paul Stoetzer)
8. Re: Help Please with Simplesat (Paul Stoetzer)
9. Re: FUNCube-1 (AO-73) Telemetry via FO-29?? (Zach Leffke)
10. Re: Help Please with Simplesat (Joe)
11. Re: FUNCube-1 (AO-73) Telemetry via FO-29?? (Dani EA4GPZ)
12. IC-9100 and SatPC32ISS (Mark Johns)
13. Re: IC-9100 and SatPC32ISS (Adrian Engele)
----------------------------------------------------------------------
Message: 1
Date: Fri, 12 Aug 2016 02:58:36 -0400
From: Scott <scott23192@xxxxx.xxx>
To: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] FUNCube-1 (AO-73) Telemetry via FO-29??
Message-ID:
<CAJCSnOYumSwCyOPM3Gif08UjRgmjbvzLZ1Mr0MiOK8fPHfxZTA@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
While monitoring FO-29 for activity tonight, I saw what appeared to be the
distinctive waveform of the telemetry stream from FUNCube-1.
Is this common? Or even possible? It was certainly a first for me. I see
that the telemetry frequency on FUNCube-1 falls inside of the uplink range
for FO-29.
The signal was a little too weak for me to decode with the FUNCube
dashboard ground station app, but I made some screen shots if anyone is
interested. My Tweet with pics is at:
https://twitter.com/scott23192/status/763990419378057216
FUNCube-1 was over Alaska & FO-29 was flying North-to-South down the
Eastern US. Would that put them in sight of each other?
If this is what happened, then it's my first satellite-to-satellite
reception, which I thought was pretty cool.
Thanks!
-Scott, K4KDR
Montpelier, VA USA
------------------------------
Message: 2
Date: Fri, 12 Aug 2016 10:16:36 +0200
From: Daniel Est?vez <daniel@xxxxxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] FUNCube-1 (AO-73) Telemetry via FO-29??
Message-ID: <95675672-bc00-fd69-ea7f-f54b28280d2e@xxxxxxxx.xxx>
Content-Type: text/plain; charset=windows-1252
El 12/08/16 a las 08:58, Scott escribi?:
> While monitoring FO-29 for activity tonight, I saw what appeared to be the
> distinctive waveform of the telemetry stream from FUNCube-1.
>
> Is this common? Or even possible? It was certainly a first for me. I see
> that the telemetry frequency on FUNCube-1 falls inside of the uplink range
> for FO-29.
Hi Scott,
Certainly it's FUNCube-1 via FO-29. That's not so common, but I've seen
a few reports of this before on the mailing list. Someone even managed
to decode the telemetry. Probably you can google if you're interested in
previous reports. Also, satellite-to-satellite QSO is also possible for
some pairs of satellites and has being done (for AO-7 and FO-29 as far
as I can remember). Note that the transponder of FO-29 is quite wide and
will retransmit a lot of birds that downlink on 2m, so lots of
possibilities for reception via FO-29.
73,
Dani.
------------------------------
Message: 3
Date: Fri, 12 Aug 2016 12:16:25 +0000 (UTC)
From: M5AKA <m5aka@xxxxx.xx.xx>
To: AMSAT BB <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] BIRDS CubeSat Constellation + ISS SSTV
Message-ID:
<1356423359.22702408.1471004185584.JavaMail.yahoo@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
Amateur Radio BIRDS CubeSat Constellation
https://amsat-uk.org/2016/08/11/ham-radio-birds-constellation/
Receive Pictures from Space ? ISS SSTV August 15-16 - WebSDR's available?
https://amsat-uk.org/2016/08/10/iss-sstv-august/
Video of ISS HamTV talk at EMF
https://amsat-uk.org/2016/08/08/iss-hamtv-emf-talk/
Video of $50SAT ham radio satellite talk
https://amsat-uk.org/2016/08/08/50-dollar-sat-emf-talk/
73 Trevor M5AKA
----
AMSAT-UK?http://amsat-uk.org/
Twitter?https://twitter.com/AmsatUK
Facebook https://facebook.com/AmsatUK
YouTube?https://youtube.com/AmsatUK
----
------------------------------
Message: 4
Date: Fri, 12 Aug 2016 10:48:03 -0400
From: Zach Leffke <zleffke@xx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] FUNCube-1 (AO-73) Telemetry via FO-29??
Message-ID: <4f62759a-3bcd-f410-98e9-29e6fe5593b9@xx.xxx>
Content-Type: text/plain; charset=windows-1252; format=flowed
It is possible to decode, though conditions need to be just so. I was
able to turn this exact phenomenon into a student project at VT for the
undergrad SatCom course. The students had to simulate the event to
predict when the chain (crosslink) events would occur (line of sight
between the two birds and FO-29 over the VTGS), what the Link Budget
looks like during the chain event (so we can predict the best
opportunity for successful decodes), and what the Doppler profile would
look like during the event (which tends to be really different than
expected, like the center frequency drifting UP due to the relative
motion between the birds). We then used the VTGS to monitor a few of
the events based of the student generated schedules and two of the
students got extra credit on the project because they were present
during a successful demodulation (and their predictions were spot on!).
I posted a short blurb on our facebook page about it:
https://www.facebook.com/vtgroundstation/
During that event we were able to dig out 6 packets using GNU Radio and
a custom AO-73 modem (Basicaly Phil Karn's AO-40 reference code wraped
for GNU Radio, also implemented by a student). Probably of more
interest to this list though is Paul's (N8HM) success with standard
equipment. He dug out 9 packets using the Funcube Dashboard and I
believe the Funcube dongle.
During that particular conjunction event, one REALLY interesting thing
that happened is that we caught the instant in time when AO-73 moved out
of eclipse. We could see the signal drifting along just a few dB above
the noise (willing it to increase just a bit to achieve sufficient SNR
for a solid decode) then all of a sudden it jumped up by 10 dB and
packets started decoding!
Very cool stuff. FO-29 is one of my favorite birds for looking at these
types of exotic cases precisely because it's transponder covers half of
the Amateur Satellite Service 2m band. As previously mentioned, lots of
opportunities for interesting events (crosslinks, gelocating the FM
interferers, etc.). AO-73 is also a great bird because of the Forward
Error Correction on the TLM link (among other reasons). For our
GNU-Radio modem, we need about 7 dB SNR (including implementation loss
there) for solid demodulation.
Fine Business!
-Zach, KJ4QLP
Research Associate
Ted & Karyn Hume Center for National Security & Technology
Virginia Polytechnic Institute & State University
Work Phone: 540-231-4174
Cell Phone: 540-808-6305
On 8/12/2016 4:16 AM, Daniel Est?vez wrote:
> El 12/08/16 a las 08:58, Scott escribi?:
>> While monitoring FO-29 for activity tonight, I saw what appeared to be the
>> distinctive waveform of the telemetry stream from FUNCube-1.
>>
>> Is this common? Or even possible? It was certainly a first for me. I see
>> that the telemetry frequency on FUNCube-1 falls inside of the uplink range
>> for FO-29.
> Hi Scott,
>
> Certainly it's FUNCube-1 via FO-29. That's not so common, but I've seen
> a few reports of this before on the mailing list. Someone even managed
> to decode the telemetry. Probably you can google if you're interested in
> previous reports. Also, satellite-to-satellite QSO is also possible for
> some pairs of satellites and has being done (for AO-7 and FO-29 as far
> as I can remember). Note that the transponder of FO-29 is quite wide and
> will retransmit a lot of birds that downlink on 2m, so lots of
> possibilities for reception via FO-29.
>
> 73,
>
> Dani.
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. 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!
> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 5
Date: Fri, 12 Aug 2016 09:54:12 -0500
From: Joe <nss@xxx.xxx>
To: amsat-bb <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Help Please with Simplesat
Message-ID: <6097f4c7-6dbe-085c-bfef-a1143eeec98e@xxx.xxx>
Content-Type: text/plain; charset=windows-1252; format=flowed
This program seems really interesting, but I can not get it to load all
the birds,
http://www.tomdoyle.org/SimpleSatLookDown/SimpleSatLookDown.html
Like NO-84 etc.
I find it amazing that a person that makes a program, has zero way to
contact the person. Granted it IS a free program so I can't complain,
it is just UG all I can see is the Celestrak info and that list does not
include NO-84
Anyone Help?
Joe WB9SBD
--
Sig
The Original Rolling Ball Clock
Idle Tyme
Idle-Tyme.com
http://www.idle-tyme.com
------------------------------
Message: 6
Date: Fri, 12 Aug 2016 16:55:50 +0200
From: Daniel Est?vez <daniel@xxxxxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] FUNCube-1 (AO-73) Telemetry via FO-29??
Message-ID: <b8bb60e6-778a-a489-2f87-d714fdcd40b1@xxxxxxxx.xxx>
Content-Type: text/plain; charset=windows-1252
El 12/08/16 a las 16:48, Zach Leffke escribi?:
> For our
> GNU-Radio modem, we need about 7 dB SNR (including implementation loss
> there) for solid demodulation.
Hi Zach,
Is this GNU-radio AO-73 receiver available online? It would be
interesting to take a look at. How does it compare (in terms of SNR
performance) to the dashboard software?
73,
Dani EA4GPZ.
------------------------------
Message: 7
Date: Fri, 12 Aug 2016 11:02:24 -0400
From: Paul Stoetzer <n8hm@xxxx.xxx>
To: Zach Leffke <zleffke@xx.xxx>
Cc: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] FUNCube-1 (AO-73) Telemetry via FO-29??
Message-ID:
<CABzOSOovsDd4prNh_fkBaFyeiLdkb=X7bu51-qVO+gF604GafA@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
Hi Zach,
Yes, I got 9 packets using an Arrow, a FT-817ND, and a High Sierra
Microwave LNAA432 preamp. I did not decode them live, I was using an
Olympus VN-702PC recorder and fed the audio into the Dashboard later. I was
not expecting success, but it did work quite well!
73,
Paul, N8HM
On Fri, Aug 12, 2016 at 10:48 AM, Zach Leffke <zleffke@xx.xxx> wrote:
> It is possible to decode, though conditions need to be just so. I was able
> to turn this exact phenomenon into a student project at VT for the
> undergrad SatCom course. The students had to simulate the event to predict
> when the chain (crosslink) events would occur (line of sight between the
> two birds and FO-29 over the VTGS), what the Link Budget looks like during
> the chain event (so we can predict the best opportunity for successful
> decodes), and what the Doppler profile would look like during the event
> (which tends to be really different than expected, like the center
> frequency drifting UP due to the relative motion between the birds). We
> then used the VTGS to monitor a few of the events based of the student
> generated schedules and two of the students got extra credit on the project
> because they were present during a successful demodulation (and their
> predictions were spot on!).
>
> I posted a short blurb on our facebook page about it:
> https://www.facebook.com/vtgroundstation/
>
> During that event we were able to dig out 6 packets using GNU Radio and a
> custom AO-73 modem (Basicaly Phil Karn's AO-40 reference code wraped for
> GNU Radio, also implemented by a student). Probably of more interest to
> this list though is Paul's (N8HM) success with standard equipment. He dug
> out 9 packets using the Funcube Dashboard and I believe the Funcube dongle.
>
> During that particular conjunction event, one REALLY interesting thing
> that happened is that we caught the instant in time when AO-73 moved out of
> eclipse. We could see the signal drifting along just a few dB above the
> noise (willing it to increase just a bit to achieve sufficient SNR for a
> solid decode) then all of a sudden it jumped up by 10 dB and packets
> started decoding!
>
> Very cool stuff. FO-29 is one of my favorite birds for looking at these
> types of exotic cases precisely because it's transponder covers half of the
> Amateur Satellite Service 2m band. As previously mentioned, lots of
> opportunities for interesting events (crosslinks, gelocating the FM
> interferers, etc.). AO-73 is also a great bird because of the Forward
> Error Correction on the TLM link (among other reasons). For our GNU-Radio
> modem, we need about 7 dB SNR (including implementation loss there) for
> solid demodulation.
>
> Fine Business!
>
> -Zach, KJ4QLP
>
> Research Associate
> Ted & Karyn Hume Center for National Security & Technology
> Virginia Polytechnic Institute & State University
> Work Phone: 540-231-4174
> Cell Phone: 540-808-6305
>
>
> On 8/12/2016 4:16 AM, Daniel Est?vez wrote:
>
>> El 12/08/16 a las 08:58, Scott escribi?:
>>
>>> While monitoring FO-29 for activity tonight, I saw what appeared to be
>>> the
>>> distinctive waveform of the telemetry stream from FUNCube-1.
>>>
>>> Is this common? Or even possible? It was certainly a first for me. I
>>> see
>>> that the telemetry frequency on FUNCube-1 falls inside of the uplink
>>> range
>>> for FO-29.
>>>
>> Hi Scott,
>>
>> Certainly it's FUNCube-1 via FO-29. That's not so common, but I've seen
>> a few reports of this before on the mailing list. Someone even managed
>> to decode the telemetry. Probably you can google if you're interested in
>> previous reports. Also, satellite-to-satellite QSO is also possible for
>> some pairs of satellites and has being done (for AO-7 and FO-29 as far
>> as I can remember). Note that the transponder of FO-29 is quite wide and
>> will retransmit a lot of birds that downlink on 2m, so lots of
>> possibilities for reception via FO-29.
>>
>> 73,
>>
>> Dani.
>>
>> _______________________________________________
>> Sent via AMSAT-BB@xxxxx.xxx. 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!
>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>>
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. 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!
> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>
------------------------------
Message: 8
Date: Fri, 12 Aug 2016 11:15:19 -0400
From: Paul Stoetzer <n8hm@xxxx.xxx>
To: Joe <nss@xxx.xxx>
Cc: amsat-bb <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Help Please with Simplesat
Message-ID:
<CABzOSOpfu-ytPMfbT4fFXHYohahCA2ZweyYi9TJCjHp3LHg8zg@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
Tom is on this list.
Edit the SatLookDown1_28\SimpleSatData\SatData\WebDataSources.txt file
and add the following line:
http://www.amsat.org/amsat/ftp/keps/current/nasabare.txt, AMSAT.txt
Then restart the program and click web update. AMSAT keps should then
be available for selection.
AMSAT keps were available by default in the previous version. I'm not
sure why he took it out. With NO-84 and AO-85, and the possibility of
similar situations in the future, we need to make sure that satellite
tracking program developers always include AMSAT keps as an option.
Too many are locked to CelesTrak which does not and cannot include
satellites launched on classified missions.
73,
Paul, N8HM
On Fri, Aug 12, 2016 at 10:54 AM, Joe <nss@xxx.xxx> wrote:
> This program seems really interesting, but I can not get it to load all the
> birds,
>
> http://www.tomdoyle.org/SimpleSatLookDown/SimpleSatLookDown.html
>
> Like NO-84 etc.
>
> I find it amazing that a person that makes a program, has zero way to
> contact the person. Granted it IS a free program so I can't complain, it is
> just UG all I can see is the Celestrak info and that list does not include
> NO-84
>
> Anyone Help?
>
> Joe WB9SBD
> --
> Sig
> The Original Rolling Ball Clock
> Idle Tyme
> Idle-Tyme.com
> http://www.idle-tyme.com
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. 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!
> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 9
Date: Fri, 12 Aug 2016 11:29:32 -0400
From: Zach Leffke <zleffke@xx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] FUNCube-1 (AO-73) Telemetry via FO-29??
Message-ID: <a88f886d-cd5d-0198-d8ca-f5e36c907a26@xx.xxx>
Content-Type: text/plain; charset=windows-1252; format=flowed
Hi Dani,
Great questions. On my long list of 'TO DOs' for the VTGS is to
get our github account up and running to push our satellite GNU Radio
work back out to the Open Source community. Once we do I'll post the
code along with the pyBOMBS recipes for installation. I don't have an
ETA for that though (maybe this Fall semester.....?). There are a few
other things in the Out of Tree Module that would be of use to Hams as
well. For example we have scramblers and descramblers that are AX.25
compliant. We also have an AFSK TRANSMITTER as well as an AFSK receiver
(I've seen a few AFSK/AX.25 GNU Radio projects, but they are all
receivers and they don't separate the demodulator from the link layer
protocol). Fair warning if I ever do get the code posted and you play
with it, the output of the modem is the raw 256 byte packet (after FEC
decode and CRC check, that I send to a PDU socket). There is no pretty
dashboard in our code. The intent was to develop a separate dashboard
for AO-73 that would connect to the GNU-Radio modem over the socket (we
operate our ground station remotely from a mini Mission Control at
Space@xxx. That is also on the long list of to dos.
I've never compared our receiver to the funcube dashboard side-by-side
in a real detailed way. That is definitely something I would be
interested in seeing the results of. I do use a funcube dongle with the
dashboard for student demos with an arrow antenna. I would say
comparing my 'impressions' of both is that they both work very well and
basically just after AO-73 pops over the horizon we get solid decodes on
both (FEC is great!). My gut is that with all of the great folks at
AMSAT-UK and all of the good engineering effort they put into that
software, that theirs probably performs a bit better. We make up for
our probably higher implementation loss by have a pair of 14 element
crossed yagis (2 M2 antennas 2MCP14s combined in phase), so lots of
gain. The AO-73 dashboard also does the Automatic Frequency Correction,
which is something we don't quite have implemented in our GNU Radio
flowgraphs yet (we tune either manually or via a Gpredict interface to
GNU-Radio to get inside the capture bandwidth of our differential bpsk
demod).
Something that would make a good comparison easier to implement, and
that I would like to see, is a Linux version (and open source) of the
FunCube Dashboard. I don't really want to mess around with Windows
emulators on our Linux servers/workstations in the VTGS. That could be a
fun student project to try to integrate a Linux version of the Dashboard
with the Socket interface to GNU Radio (and would allow us to forward
the tlm packets to the data warehouse easier). That's one of the things
I really like about the AO-85 dashboard is the cross-platform support.
Good questions, thanks for the interest. I'll try to put more effort
into elevating the github thing on the to do list this semester.
-Zach, KJ4QLP
Research Associate
Ted & Karyn Hume Center for National Security & Technology
Virginia Polytechnic Institute & State University
Work Phone: 540-231-4174
Cell Phone: 540-808-6305
On 8/12/2016 10:55 AM, Daniel Est?vez wrote:
> El 12/08/16 a las 16:48, Zach Leffke escribi?:
>
>> For our
>> GNU-Radio modem, we need about 7 dB SNR (including implementation loss
>> there) for solid demodulation.
> Hi Zach,
>
> Is this GNU-radio AO-73 receiver available online? It would be
> interesting to take a look at. How does it compare (in terms of SNR
> performance) to the dashboard software?
>
> 73,
>
> Dani EA4GPZ.
>
>
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. 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!
> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 10
Date: Fri, 12 Aug 2016 10:43:37 -0500
From: Joe <nss@xxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] Help Please with Simplesat
Message-ID: <62c4cb5d-bb9a-9b60-0a74-83ea6456af09@xxx.xxx>
Content-Type: text/plain; charset=windows-1252; format=flowed
Thanks Paul,
I was missing the last part after the .txt of the url, the AMSAT.txt
Now it works! THANKS!!!
Joe
Sig
The Original Rolling Ball Clock
Idle Tyme
Idle-Tyme.com
http://www.idle-tyme.com
On 8/12/2016 10:15 AM, Paul Stoetzer wrote:
> Tom is on this list.
>
> Edit the SatLookDown1_28\SimpleSatData\SatData\WebDataSources.txt file
> and add the following line:
>
> http://www.amsat.org/amsat/ftp/keps/current/nasabare.txt, AMSAT.txt
>
> Then restart the program and click web update. AMSAT keps should then
> be available for selection.
>
> AMSAT keps were available by default in the previous version. I'm not
> sure why he took it out. With NO-84 and AO-85, and the possibility of
> similar situations in the future, we need to make sure that satellite
> tracking program developers always include AMSAT keps as an option.
> Too many are locked to CelesTrak which does not and cannot include
> satellites launched on classified missions.
>
> 73,
>
> Paul, N8HM
>
>
>
> On Fri, Aug 12, 2016 at 10:54 AM, Joe <nss@xxx.xxx> wrote:
>> This program seems really interesting, but I can not get it to load all the
>> birds,
>>
>> http://www.tomdoyle.org/SimpleSatLookDown/SimpleSatLookDown.html
>>
>> Like NO-84 etc.
>>
>> I find it amazing that a person that makes a program, has zero way to
>> contact the person. Granted it IS a free program so I can't complain, it
is
>> just UG all I can see is the Celestrak info and that list does not include
>> NO-84
>>
>> Anyone Help?
>>
>> Joe WB9SBD
>> --
>> Sig
>> The Original Rolling Ball Clock
>> Idle Tyme
>> Idle-Tyme.com
>> http://www.idle-tyme.com
>> _______________________________________________
>> Sent via AMSAT-BB@xxxxx.xxx. 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!
>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. 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!
> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>
>
>
------------------------------
Message: 11
Date: Fri, 12 Aug 2016 18:33:09 +0200
From: Dani EA4GPZ <daniel@xxxxxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] FUNCube-1 (AO-73) Telemetry via FO-29??
Message-ID: <840faf84-5128-e1b0-a269-2d0d2728cba3@xxxxxxxx.xxx>
Content-Type: text/plain; charset=windows-1252
El 12/08/16 a las 17:29, Zach Leffke escribi?:
> Hi Dani,
>
> Great questions. On my long list of 'TO DOs' for the VTGS is to get
> our github account up and running to push our satellite GNU Radio work
> back out to the Open Source community. Once we do I'll post the code
> along with the pyBOMBS recipes for installation. I don't have an ETA
> for that though (maybe this Fall semester.....?). There are a few other
> things in the Out of Tree Module that would be of use to Hams as well.
> For example we have scramblers and descramblers that are AX.25
> compliant. We also have an AFSK TRANSMITTER as well as an AFSK receiver
> (I've seen a few AFSK/AX.25 GNU Radio projects, but they are all
> receivers and they don't separate the demodulator from the link layer
> protocol).
Hi Zack,
Looking forward to it, as this will be useful for me and probably other
hams. I understand that it is a bit of work to clean the code up to push
to github.
In fact, I also have my own AFSK/AX.25 GNUradio transceiver in github,
as I wasn't too happy with any of the other projects (it also does FSK
and BSPK, which is useful for QB50p). For AX.25 (de)scrambling I use the
default GNUradio blocks. They can be used if you understand what
parameters you need to put.
In case anyone is interested:
https://github.com/daniestevez/gr-kiss
http://destevez.net/2016/05/scramblers-and-their-implementation-in-gnuradio/
> The AO-73 dashboard also does the Automatic Frequency Correction,
> which is something we don't quite have implemented in our GNU Radio
> flowgraphs yet (we tune either manually or via a Gpredict interface to
> GNU-Radio to get inside the capture bandwidth of our differential bpsk
> demod).
It's not as good as the software in the dashboard, which will search for
the signal in all the passband and track it, but in GNUradio you can use
FLL band edge, which will correct mistunings of up to a 1 or 2kHz.
Together with Gpredict, this usually solves all tuning problems.
Probably you already knew this.
> Something that would make a good comparison easier to implement, and
> that I would like to see, is a Linux version (and open source) of the
> FunCube Dashboard.
>
> That's one of the things
> I really like about the AO-85 dashboard is the cross-platform support.
Same opinion here. For me it's a hassle to run the dashboard inside a
virtual machine, if only because I have to feed it the audio via wav
files. Between linux programs I can use pulseaudio to exchange real time
audio.
73,
Dani EA4GPZ.
------------------------------
Message: 12
Date: Fri, 12 Aug 2016 17:17:06 +0000 (UTC)
From: Mark Johns <mjohns166@xxxxx.xxx>
To: AMSAT BB <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] IC-9100 and SatPC32ISS
Message-ID: <1149340420.1298765.1471022226165@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
I bought a new PC, now running Windows 10, and trying to get everything set
up once again. It's always the little things that take so much time to
figure out. Perhaps someone can help with this one:
I have the entry for ISS packet repeater set up in Doppler.SQF as:
ISS,145825,145825,FMD,FMD,NOR,0,0,Packet
When I select ISS in SatPC32, it immediately changes the frequencies of both
VFOs to 145.825 and puts the rig into FM with the Digital mode indicated.
When I start SatPC32ISS (which uses the same Doppler.SQF file as SatPC32),
it changes the frequencies of both VFOs to 145.825 and puts the rig into FM
but NOT into the Digital mode. I have to do that manually on the rig.
Any thoughts?
-- Mark D. Johns, K?MDJ
Decorah, Iowa USA EN43
-----------------------------------------------
"Heaven goes by favor; if it went by merit,
you would stay out and your dog would go in."
---Mark Twain
------------------------------
Message: 13
Date: Fri, 12 Aug 2016 17:25:45 +0000 (UTC)
From: Adrian Engele <aa5uk@xxxxx.xxx>
To: Mark Johns <mjohns@xxxxxx.xxx>, Mark Johns via AMSAT-BB
<amsat-bb@xxxxx.xxx>, AMSAT BB <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] IC-9100 and SatPC32ISS
Message-ID: <1959142862.1312406.1471022745667@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
I found I have to manually put it in D mode when using SatPC32ISS and the
IC-9100.
Let me know if I can be of further assistance.
73, Adrian AA5UK
Sent from Yahoo Mail on Android
On Fri, Aug 12, 2016 at 12:17 PM, Mark Johns via
AMSAT-BB<amsat-bb@xxxxx.xxx> wrote: I bought a new PC, now running Windows
10, and trying to get everything set up once again. It's always the little
things that take so much time to figure out. Perhaps someone can help with
this one:
I have the entry for ISS packet repeater set up in Doppler.SQF as:
ISS,145825,145825,FMD,FMD,NOR,0,0,Packet
When I select ISS in SatPC32, it immediately changes the frequencies of both
VFOs to 145.825 and puts the rig into FM with the Digital mode indicated.
When I start SatPC32ISS (which uses the same Doppler.SQF file as SatPC32),
it changes the frequencies of both VFOs to 145.825 and puts the rig into FM
but NOT into the Digital mode. I? have to do that manually on the rig.
Any thoughts?
-- Mark D. Johns, K?MDJ
Decorah, Iowa USA? EN43
-----------------------------------------------
"Heaven goes by favor; if it went by merit,
? you would stay out and your dog would go in."
? ? ---Mark Twain
_______________________________________________
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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!
Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Subject: Digest Footer
_______________________________________________
Sent via amsat-bb@xxxxx.xxx.
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 member? Join now to support the amateur satellite program!
http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
End of AMSAT-BB Digest, Vol 11, Issue 255
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