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CX2SA > SATDIG 31.10.19 19:12l 743 Lines 25715 Bytes #999 (0) @ WW
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Sent: 191031/1704Z @:CX2SA.SAL.URY.SOAM #:17079 [Salto] FBB7.00e $:AMSATBB14393
From: CX2SA@CX2SA.SAL.URY.SOAM
To : SATDIG@WW
Today's Topics:
1. Re: LDPC for FPGAs to do DVB-S2/X on SDRs - so many letters!
What does it mean? (Red Willoughby)
2. N4KGL's RaDAR Challenge Plans Saturday, Nov 2nd (Greg Lane)
3. LOTW problems (Rick Wyrwas)
4. Re: LOTW problems (Robert Bankston)
5. Re: Secondary mission ideas (Cathryn Mataga)
6. Re: IC-9700 & FoxTelem 1.08p (Kevin)
7. Re: Secondary mission ideas (Adam Whitney)
8. Re: Secondary mission ideas (Adam Whitney)
9. Re: LDPC for FPGAs to do DVB-S2/X on SDRs - so many letters!
What does it mean? (Michelle Thompson)
10. Re: Nice Article VK5ZAI (John Brier)
11. Re: Secondary mission ideas (John Brier)
12. Re: Secondary mission ideas (Stefan Wagener)
----------------------------------------------------------------------
Message: 1
Date: Thu, 31 Oct 2019 07:36:10 -0500
From: Red Willoughby <redski@?????????.???>
To: amsat-bb@?????.???
Subject: Re: [amsat-bb] LDPC for FPGAs to do DVB-S2/X on SDRs - so
many letters! What does it mean?
Message-ID: <FA56FF30-E3A7-4859-A663-71B6DADF2080@?????????.???>
Content-Type: text/plain; charset=utf-8
Thanks for the terrific explanation of DVB. I am a pedestrian Ham and I
don?t work in the DVB industry, so the plain-language discussion was very
helpful.
Red
KC4LE
------------------------------
Message: 2
Date: Thu, 31 Oct 2019 07:44:51 -0500
From: Greg Lane <lanekg@?????.???>
To: amsat-bb@?????.???
Subject: [amsat-bb] N4KGL's RaDAR Challenge Plans Saturday, Nov 2nd
Message-ID:
<CAKBWdLoY3DDboz4nrCUKm46Wkf7Z5k-x9GT41ihre-ODV8KGgQ@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Please listen for N4KGL from EM70 on SO-50 Saturday Nov 2nd 1300 UTC. I
will be hand-held portable.
Dennis WA6QKN and I will combine Rapid Deployment Radio (RaDAR), Parks On
The Air (POTA), and Amateur Satellites along with a fun bike ride. All of
this in Wakulla County, Florida. Rapid Deployment Amateur Radio combines
the outdoors, amateur radio, and movement. You are welcome to try RaDAR in
the field or chase us on the radio. Please check https://pota.us/ for our
spots. We will use N4KGL as our callsign. In RaDAR we need at least five
contacts to move to the next location. For bikes, we need to move at least
two kilometers. Our bike rides will be longer to get from park to park.
Our four-hour clock for the challenge will start at 1300 UTC, 9 AM EDT,
with the SO-50 pass at the Wakulla Station Trailhead on the Tallahassee St
Marks Historic Rail Trail (POTA K-3661). We will complete our five contacts
on HF and ride our bikes to Wakulla State Forrest (POTA K-4643). Then
continue the bike ride to Wakulla Springs State Park (POTA K-1862). Our HF
contacts will be CW or SSB on 40, 20, or 17 meters. Please watch for our
spots on https://pota.us/#/
Our rig will be the Elecraft KX2 with the Elecraft KXPA100 amp. I will use
a bike cart to pull the rig and a 30 AH Bioenno battery. The antenna will
be a SOTABeams Band Hopper Link Dipole.
We may continue this pattern beyond four hours to qualify for one of the
RaDAR Awards sponsored by Parks On The Air.
Warthog Award: two RaDAR* transitions at or between entities during a 24
> hour period.
> Rhino Award: three RaDAR* transitions at or between entities during a 24
> hour period.
> Cheetah Award: five RaDAR* transitions at or between entities during a 24
> hour period
> Ostrich Award: seven RaDAR* transitions at or between entities during a 24
> hour period.
> Leopard Award: ten RaDAR* transitions at or between entities during a 24
> hour period.
> Lion Award: twelve RaDAR* transitions at or between entities during a 24
> hour period
RaDAR rules
http://radarops.co.za/index.php/radar-rules/
RaDAR Group on MeWe
https://mewe.com/group/5c1156b6a08bc414d0dd76dd
RaDAR on Groups.io
https://groups.io/g/RaDAR/topics
Parks On The Air
https://parksontheair.com/
Tallahassee St Marks Rail Trail
https://www.floridastateparks.org/parks-and-trails/tallahassee-st-marks-histor
ic-railroad-state-trail
N4KGL Blog
https://www.n4kgl.info/
.
------------------------------
Message: 3
Date: Thu, 31 Oct 2019 08:36:16 -0500
From: Rick Wyrwas <rwyrwas48@?????.???>
To: "amsat-bb@?????.???? <amsat-bb@?????.???>
Subject: [amsat-bb] LOTW problems
Message-ID:
<CAFeVdEOhT0bVHiT=ww17k1+ZeHVpWiS_UMPOW5W98VfDgcP1Gg@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Is anyone having problem when a QSO is verified, no grid is shown in VUCC
column
Rick
WA9JBQ
--
Rick Wyrwas
------------------------------
Message: 4
Date: Thu, 31 Oct 2019 13:46:50 +0000 (UTC)
From: Robert Bankston <ke4al@?????.???>
To: "amsat-bb@?????.???? <amsat-bb@?????.???>, Rick Wyrwas
<rwyrwas48@?????.???>
Subject: Re: [amsat-bb] LOTW problems
Message-ID: <1736970560.4983514.1572529610861@????.?????.???>
Content-Type: text/plain; charset=UTF-8
Rick,
There could be a multiple of reasons why a gridsquare is not awarded for VUCC.
If the QSO is confirmed and the detail specifies a grid, then it usually is
either you already have the grid confirmed or you were outside of your
designated VUCC circle (per YOUR established VUCC Rules).
Sometimes the QSL lists a grid, but it is not awarded and there is a box
next to it.? If this is not an "exotic" grid, chances are you already have
it confirmed.
If no grid is specified in the QSL details, then the other person forgot to
include that information.
73,
Robert Bankston, KE4ALVice-President, User ServicesRadio Amateur Satellite
Corporation (AMSAT)
Twitter:? @??????????????????? KE4AL.wordpress.com
On Thursday, October 31, 2019, 08:38:04 AM CDT, Rick Wyrwas via AMSAT-BB
<amsat-bb@?????.???> wrote:
Is anyone having problem when a QSO is verified, no grid is shown in VUCC
column
Rick
WA9JBQ
--
Rick Wyrwas
_______________________________________________
Sent via AMSAT-BB@?????.???. 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: https://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 5
Date: Thu, 31 Oct 2019 07:57:58 -0700
From: Cathryn Mataga <cathryn@????????????.???>
To: amsat-bb@?????.???? Andrew Glasbrenner
<glasbrenner@??????????.???>
Subject: Re: [amsat-bb] Secondary mission ideas
Message-ID: <7f91c5a7-7b75-3eb8-e952-5d24f66425fd@????????????.???>
Content-Type: text/plain; charset=utf-8; format=flowed
My pitch, store and forward tiny images.? The receiver listens on the
receive channel 9600 baud for digital images. It just listens only.
Whenever it receives one with proper headers and without error, it
stores it. Then on the downlink, it cycles through the last 20 or so, or
about however many can be downloaded in an overhead pass. When the 21st
picture comes in, it just throws away the oldest image. I suggest using
.png formatted graphics with a file size limit of 8192 bytes, something
like this?? Enough pixels to be fun, but not so much to get unwieldy.
This would make a fun visual demo to show off amsat/ham radio -- the
satellite would show a cool little slide show from stations around the
world.
------------------------------
Message: 6
Date: Thu, 31 Oct 2019 08:08:50 -0700
From: Kevin <wa7fwf@?????.???>
To: APBIDDLE@???????.???? Alan <wa4sca@?????.???>, AMSAT-BB
<amsat-bb@?????.???>
Subject: Re: [amsat-bb] IC-9700 & FoxTelem 1.08p
Message-ID: <31a6958e-ff09-bbef-7964-b7e389bce873@?????.???>
Content-Type: text/plain; charset=utf-8; format=flowed
Alan,
? Windows 10 pro? Version??? 10.0.17763 Build 17763
? Java jre1.8.0_221
? wonder what other variables might be a factor?
73
Kevin wa7fwf
On 10/31/2019 03:33, Alan via AMSAT-BB wrote:
> Kevin,
>
> I just played your recording through 1.08p. Recovered 25 frames, which is
about what you expect. More evidence there is another variable involved.
>
> 73,
>
> Alan
> WA4SCA
>
>
> <-----Original Message-----
> <From: AMSAT-BB [mailto:amsat-bb-bounces@?????.???? On Behalf Of Kevin
> <via AMSAT-BB
> <Sent: Wednesday, October 30, 2019 22:45 PM
> <To: amsat-bb@?????.???
> <Subject: Re: [amsat-bb] IC-9700 & foxtelem 1.08p
> <
> <Chris,
> < The 9700 outputs a 12khz IF signal that is passed to the internal
> <codec and then out the USB port and windows treats it as a soundcard.
> < I used audacity to create about a 2min file and then read it in on
> <1.07y to verify it is good.
> < I uploaded it to dropbox and the link is
> < https://www.dropbox.com/s/eh5bya72y8gfskt/fox1.wav?dl=0
> <
> <it was recorded at 48000 and has been saved as a wav
> <
> <Thanks
> <Kevin wa7fwf
> <
> <On 10/30/2019 13:59, Chris Thompson via AMSAT-BB wrote:
> <> I have tried to reproduce this, but I do not have a 9700 so it is hard.
So
> <> far I can not work out what is wrong.
> <>
> <> Can someone describe the setup with the 9700? How is the audio read into
> <> the computer and sent to FoxTelem? Is FoxTelem reading it from a sound
> <> card? Or what looks like a sound card?
> <>
> <> Can someone use Audacity and record some audio for me to test with? Try
> <to
> <> record it at the sample rate you use in FoxTelem. e.g. if you set
FoxTelem
> <> to IQ and 48000 samples per second, then set Audacity to 48000 too.
> <>
> <> thanks
> <> Chris
> <>
> <> On Wed, Oct 30, 2019 at 1:23 PM jeff griffin via AMSAT-BB <
> <> amsat-bb@?????.???> wrote:
> <>
> <>> I'm going to wait for the fix for the 9700. In the meantime I'm now
> <>> collecting telemetry with my FIAB with a eggbeater antenna setup that
I'm
> <>> going to leave up here for the winter. I'm seeing a much better decode
> <rate
> <>> with 1.08p over 1.07y, about 2 to 1. So I'm seeing 1.08 is clearly
better
> <>> then 1.07. Thanks Chris!
> <>>
> <>> 73 Jeff kb2m
> <>>
> <>> -----Original Message-----
> <>> From: AMSAT-BB [mailto:amsat-bb-bounces@?????.???? On Behalf Of
> <Kevin via
> <>> AMSAT-BB
> <>> Sent: Wednesday, October 30, 2019 12:54 PM
> <>> To: amsat-bb@?????.???
> <>> Subject: Re: [amsat-bb] IC-9700 & foxtelem 1.08p
> <>>
> <>> Hi Alan and everyone else that replied,
> <>>
> <>> Windows Sinc also has zero decodes, tried all decoder modes.
> <>>
> <>> for now 1.07y FTW
> <>>
> <>> Thanks
> <>> Kevin
> <>>
> <>>
> <>> On 10/29/2019 23:20, Alan wrote:
> <>>> I you are using the Raised Cosine decoder, try the Windows Sinc
instead.
> <>>>
> <>>> 73,
> <>>>
> <>>> Alan
> <>>>
> <>>> WA4SCA
> <>>>
> <>>> *From: *Kevin via AMSAT-BB <mailto:amsat-bb@?????.???>
> <>>> *Sent: *Wednesday, October 30, 2019 12:21 AM
> <>>> *To: *amsat-bb@?????.??? <mailto:amsat-bb@?????.???>
> <>>> *Subject: *[amsat-bb] IC-9700 & foxtelem 1.08p
> <>>>
> <>>> Hi All,
> <>>>
> <>>> Any IC-9700 users out there that have switched to foxtelem 1.08p
> <>>>
> <>>> using USB and IQ mode? I see a good eye but get zero decodes, dropping
> <>>>
> <>>> back to 1.07y and it all starts working again.
> <>>>
> <>>> 73
> <>>>
> <>>> Kevin WA7FWF
> <>>>
> <>>> _______________________________________________
> <>>>
> <>>> Sent via AMSAT-BB@?????.???. 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: https://www.amsat.org/mailman/listinfo/amsat-bb
> <>>>
> <>> _______________________________________________
> <>> Sent via AMSAT-BB@?????.???. 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: https://www.amsat.org/mailman/listinfo/amsat-bb
> <>>
> <>> _______________________________________________
> <>> Sent via AMSAT-BB@?????.???. 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: https://www.amsat.org/mailman/listinfo/amsat-bb
> <>>
> <>
> <
> <_______________________________________________
> <Sent via AMSAT-BB@?????.???. 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: https://www.amsat.org/mailman/listinfo/amsat-bb
>
> _______________________________________________
> Sent via AMSAT-BB@?????.???. 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: https://www.amsat.org/mailman/listinfo/amsat-bb
>
------------------------------
Message: 7
Date: Thu, 31 Oct 2019 10:22:13 -0500
From: Adam Whitney <awhitney42@?????.???>
To: Cathryn Mataga <cathryn@????????????.???>
Cc: AMSAT-BB@?????.???
Subject: Re: [amsat-bb] Secondary mission ideas
Message-ID: <4ACC00A1-908E-4B33-95C7-AD880FB5B50F@?????.???>
Content-Type: text/plain; charset=utf-8
I love this idea, Cathryn! I can see a lot of excitement with operators and
clubs sending digital postcard images to each other across the globe!
There was quite a lot of participation in sending SSTV images for AO-85
Experimenters? Wednesday last year, but for that you had to be in the
footprint and receive in real-time. This idea takes that to the next level.
73!
Adam Whitney, K0FFY
> On Oct 31, 2019, at 10:04, Cathryn Mataga via AMSAT-BB
<amsat-bb@?????.???> wrote:
>
> ?My pitch, store and forward tiny images. The receiver listens on the
receive channel 9600 baud for digital images. It just listens only. Whenever
it receives one with proper headers and without error, it stores it. Then on
the downlink, it cycles through the last 20 or so, or about however many can
be downloaded in an overhead pass. When the 21st picture comes in, it just
throws away the oldest image. I suggest using .png formatted graphics with a
file size limit of 8192 bytes, something like this? Enough pixels to be
fun, but not so much to get unwieldy.
>
> This would make a fun visual demo to show off amsat/ham radio -- the
satellite would show a cool little slide show from stations around the world.
>
>
> _______________________________________________
> Sent via AMSAT-BB@?????.???. 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: https://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 8
Date: Thu, 31 Oct 2019 10:22:13 -0500
From: Adam Whitney <awhitney42@?????.???>
To: Cathryn Mataga <cathryn@????????????.???>
Cc: AMSAT-BB@?????.???
Subject: Re: [amsat-bb] Secondary mission ideas
Message-ID: <4ACC00A1-908E-4B33-95C7-AD880FB5B50F@?????.???>
Content-Type: text/plain; charset=utf-8
I love this idea, Cathryn! I can see a lot of excitement with operators and
clubs sending digital postcard images to each other across the globe!
There was quite a lot of participation in sending SSTV images for AO-85
Experimenters? Wednesday last year, but for that you had to be in the
footprint and receive in real-time. This idea takes that to the next level.
73!
Adam Whitney, K0FFY
> On Oct 31, 2019, at 10:04, Cathryn Mataga via AMSAT-BB
<amsat-bb@?????.???> wrote:
>
> ?My pitch, store and forward tiny images. The receiver listens on the
receive channel 9600 baud for digital images. It just listens only. Whenever
it receives one with proper headers and without error, it stores it. Then on
the downlink, it cycles through the last 20 or so, or about however many can
be downloaded in an overhead pass. When the 21st picture comes in, it just
throws away the oldest image. I suggest using .png formatted graphics with a
file size limit of 8192 bytes, something like this? Enough pixels to be
fun, but not so much to get unwieldy.
>
> This would make a fun visual demo to show off amsat/ham radio -- the
satellite would show a cool little slide show from stations around the world.
>
>
> _______________________________________________
> Sent via AMSAT-BB@?????.???. 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: https://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 9
Date: Thu, 31 Oct 2019 08:22:36 -0700
From: Michelle Thompson <mountain.michelle@?????.???>
To: Red Willoughby <redski@?????????.???>
Cc: amsat-bb@?????.???
Subject: Re: [amsat-bb] LDPC for FPGAs to do DVB-S2/X on SDRs - so
many letters! What does it mean?
Message-ID:
<CACvjz2Ueffh1VtPtVX70Q8VV0Lt=i177vBUQr+H0xq_a-Kn1kg@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
You are very welcome!
There is a lot of unnecessary mystique surrounding digital waveforms and
error correcting codes.
There?s a variety of reasons for this, many of them entirely legitimate.
Things worth doing are rarely easy. Achieving technical performance near
physical limits is definitely worth doing. It?s not a surprise this stuff
can be hard to describe or teach.
However, we as a community are In the best possible position to democratize
and popularize advanced digital waveforms.
Even the most complex protocols and algorithms can be understood and used
by amateurs. Break them down into basic functions, where the purpose and
the execution can be described in clear language.
People like me don?t always accomplish this, but the success and
accessibility of what we?ve been up to over the last couple of years is
proof it can and should be done.
In space communications, there?s additional difficulties. There?s more
gatekeeping and fewer opportunities for deployment when compared to
terrestrial communications. The risk aversion is another impediment. Jan
King spoke to that several times at Symposium this year.
But, there are enormous advantages of things like complex coding,
autonomous receivers, and delay tolerant protocols for deep space
communications.
This is where we should be spending more time and effort.
-Michelle W5NYV
On Thu, Oct 31, 2019 at 05:38 Red Willoughby via AMSAT-BB <
amsat-bb@?????.???> wrote:
> Thanks for the terrific explanation of DVB. I am a pedestrian Ham and I
> don?t work in the DVB industry, so the plain-language discussion was very
> helpful.
> Red
> KC4LE
> _______________________________________________
> Sent via AMSAT-BB@?????.???. 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: https://www.amsat.org/mailman/listinfo/amsat-bb
>
--
-Michelle W5NYV
"Potestatem obscuri lateris nescis."
------------------------------
Message: 10
Date: Thu, 31 Oct 2019 11:50:40 -0400
From: John Brier <johnbrier@?????.???>
To: christy hunter <cchunter3@??????????.???>
Cc: AMSAT BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Nice Article VK5ZAI
Message-ID:
<CALn0fKP0AMRfvEEVmoPLrWggyxB+DUaAqqF_MEFg3MqWxj8iag@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
I just noticed there is a video report about Tony as well:
https://www.youtube.com/watch?v=t811YfLrhuY
I must say Tony has the most impressive amateur radio ground station I
have ever seen. The antenna and rotator system alone is amazing. It's
hard to believe it is only powered by car wiper motors though! I guess
gearing helps a lot :-)
73, John Brier KG4AKV
On Sat, Oct 5, 2019 at 9:00 PM christy hunter via AMSAT-BB
<amsat-bb@?????.???> wrote:
>
> ALL,
>
> short article on Tony Hutchison's involvement with Nasa/MIR/ARISS
>
>
https://www.abc.net.au/news/2019-10-06/nasa-considers-amateur-radio-buff-part-
of-astronaut-family/11530046
>
> 73 Christy KB6LTY
>
> _______________________________________________
> Sent via AMSAT-BB@?????.???. 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: https://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 11
Date: Thu, 31 Oct 2019 12:23:53 -0400
From: John Brier <johnbrier@?????.???>
To: "Leffke, Zachary" <zleffke@??.???>
Cc: "amsat-bb@?????.???? <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Secondary mission ideas
Message-ID:
<CALn0fKNd21i70S9xKCk=G-kBnmvAy1SfnDjZAajrQiXDw+CV7A@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
On Tue, Oct 29, 2019 at 8:19 PM Leffke, Zachary via AMSAT-BB
<amsat-bb@?????.???> wrote:
> Idea 2: How 'utilized' are the Amateur Satellite Service bands?
> Different idea could be spectrum mapping.......depending on the type of
SDR, if they can receive the full 3 MHz of 435-438 MHz band....do some
FFT/averaging magic, store off FFT 'snapshots', and then later downlink the
snapshots. Idea would be to develop a 'heatmap' of the use of the 435-438
MHz band. Doesn't have to be hyper-precise geolocation or anything that
crazy to still to be useful......as long as they manage a reasonably
accurate timestamp for when the FFT was taken (preferably in UTC, or at
least something that can be mapped to UTC) they could figure out where the
bird was from TLEs later. If they happen to be flying a GPS, even better.
Global heatmap of the 435-438 MHz band might be good info for groups like
IARU for coordination purposes.
More data can't hurt but this has already been done:
https://marconissta.com/uber/
73, John Brier KG4AKV
------------------------------
Message: 12
Date: Thu, 31 Oct 2019 11:41:09 -0500
From: Stefan Wagener <wageners@?????.???>
To: John Brier <johnbrier@?????.???>
Cc: "amsat-bb@?????.???? <amsat-bb@?????.???>, "Leffke, Zachary"
<zleffke@??.???>
Subject: Re: [amsat-bb] Secondary mission ideas
Message-ID:
<CAKu8kHCdytgJ3NA3iSaOMorGrC-zgfPxMQCA+vaC5gDFye6uCg@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
These are great ideas and whatever is implemented will be exciting. Please
consider L-band uplink in any design.
73, Stefan, VE4SW
On Thu, Oct 31, 2019 at 11:27 AM John Brier via AMSAT-BB <amsat-bb@?????.???>
wrote:
> On Tue, Oct 29, 2019 at 8:19 PM Leffke, Zachary via AMSAT-BB
> <amsat-bb@?????.???> wrote:
> > Idea 2: How 'utilized' are the Amateur Satellite Service bands?
> > Different idea could be spectrum mapping.......depending on the type of
> SDR, if they can receive the full 3 MHz of 435-438 MHz band....do some
> FFT/averaging magic, store off FFT 'snapshots', and then later downlink the
> snapshots. Idea would be to develop a 'heatmap' of the use of the 435-438
> MHz band. Doesn't have to be hyper-precise geolocation or anything that
> crazy to still to be useful......as long as they manage a reasonably
> accurate timestamp for when the FFT was taken (preferably in UTC, or at
> least something that can be mapped to UTC) they could figure out where the
> bird was from TLEs later. If they happen to be flying a GPS, even better.
> Global heatmap of the 435-438 MHz band might be good info for groups like
> IARU for coordination purposes.
>
> More data can't hurt but this has already been done:
>
> https://marconissta.com/uber/
>
> 73, John Brier KG4AKV
> _______________________________________________
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Sent via amsat-bb@?????.???.
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AMSAT-NA.
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End of AMSAT-BB Digest, Vol 14, Issue 393
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