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Today's Topics:
1. Re: [Video] HuskySat-1 decoded with manual tuning and no SDR
(John Brier)
2. Re: [Video] HuskySat-1 decoded with manual tuning and no SDR
(Chris Thompson)
3. Foxtelem (Pete vk2pet)
4. FoxTelem (James Jipping)
5. Re: FoxTelem (Burns Fisher)
6. Re: FoxTelem (Nitin Muttin)
7. Re: FoxTelem (JoAnne K9JKM)
8. Help with new SatPC32 Setup with IC-9700 (Bob)
9. Re: Help with new SatPC32 Setup with IC-9700 (Bob)
10. Re: Help with new SatPC32 Setup with IC-9700 (Dave Webb KB1PVH)
11. Re: Help with new SatPC32 Setup with IC-9700 (Erich Eichmann)
12. Re: Help with new SatPC32 Setup with IC-9700 (Bob)
----------------------------------------------------------------------
Message: 1
Date: Sun, 2 Feb 2020 21:08:15 -0500
From: John Brier <johnbrier@?????.???>
To: Zach Metzinger <zmetzing@?????.???>
Cc: AMSAT BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] [Video] HuskySat-1 decoded with manual tuning
and no SDR
Message-ID:
<CALn0fKPo7fmSxadkoowuLux_+768CRZi41C1Zd4zn8Td-VBEKA@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Thanks Zach.
I noticed the spinning too, and noticed it was not what others have shown
in their videos, so figured it had to do with my manual tuning, so thanks
for verifying.
I read the first page and that doc looks like a really good primer on
digital RF. Some of those diagram might as well be art.
73, John Brier KG4AKV
On Sun, Feb 2, 2020, 20:44 Zach Metzinger via AMSAT-BB <amsat-bb@?????.???>
wrote:
> On 02/02/20 18:50, John Brier via AMSAT-BB wrote:
> > One thing I didn't mention in the video, at the end of the pass around
> > 10 degrees elevation and lower I decoded a lot of frames because the
> > signal was still strong and by that point the frequency wasn't
> > changing much anymore, as the satellite's relative speed stopped
> > changing.
>
> The video is instructive as one can see the plotted constellation
> "spinning" before symbol lock. Even after locking, the constellation
> rotates, indicating a frequency error between the transmitter and
> receiver presenting itself as a continuous phase rotation.
>
> With an antipodal signal, the constellation diagram will tell you a lot
> about received signal quality, including SNR (fuzzy points), interfering
> signals (donuts), out-of-lock (one big circle), frequency/phase errors
> (smeared clusters of points in a radial pattern).
>
> A great technical read on vector modulation analysis:
>
> http://literature.cdn.keysight.com/litweb/pdf/5091-8687E.pdf
>
> --- Zach
> N0ZGO
> _______________________________________________
> 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: 2
Date: Sun, 2 Feb 2020 21:41:02 -0500
From: Chris Thompson <g0kla@????.???>
To: John Brier <johnbrier@?????.???>
Cc: AMSAT BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] [Video] HuskySat-1 decoded with manual tuning
and no SDR
Message-ID:
<CAJOf0+vuamAmaya7UMMOE2SKvBsge9LawBCiS1=259sOyDYESA@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Nice video. Thanks for posting. As Zach said, the spinning phasor tells
us that the frequency is not locked, but that is OK as long as it is a
line. The "Dot Product" decoder is not a coherent decoder so it is not in
phase lock with the original carrier. The phasor is allowed to rotate and
we will still get 100% decode. It can't be a circle or a cloud though :).
If you use the Costas loop decoder then it will freeze the phasor
horizontally when locked because it is a coherent decoder. The two
decoders have pros and cons with their ability to decode. Enjoy exploring
that.
73
Chris
On Sun, Feb 2, 2020 at 9:10 PM John Brier via AMSAT-BB <amsat-bb@?????.???>
wrote:
> Thanks Zach.
>
> I noticed the spinning too, and noticed it was not what others have shown
> in their videos, so figured it had to do with my manual tuning, so thanks
> for verifying.
>
> I read the first page and that doc looks like a really good primer on
> digital RF. Some of those diagram might as well be art.
>
> 73, John Brier KG4AKV
>
> On Sun, Feb 2, 2020, 20:44 Zach Metzinger via AMSAT-BB <amsat-bb@?????.???
> >
> wrote:
>
> > On 02/02/20 18:50, John Brier via AMSAT-BB wrote:
> > > One thing I didn't mention in the video, at the end of the pass around
> > > 10 degrees elevation and lower I decoded a lot of frames because the
> > > signal was still strong and by that point the frequency wasn't
> > > changing much anymore, as the satellite's relative speed stopped
> > > changing.
> >
> > The video is instructive as one can see the plotted constellation
> > "spinning" before symbol lock. Even after locking, the constellation
> > rotates, indicating a frequency error between the transmitter and
> > receiver presenting itself as a continuous phase rotation.
> >
> > With an antipodal signal, the constellation diagram will tell you a lot
> > about received signal quality, including SNR (fuzzy points), interfering
> > signals (donuts), out-of-lock (one big circle), frequency/phase errors
> > (smeared clusters of points in a radial pattern).
> >
> > A great technical read on vector modulation analysis:
> >
> > http://literature.cdn.keysight.com/litweb/pdf/5091-8687E.pdf
> >
> > --- Zach
> > N0ZGO
> > _______________________________________________
> > 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
>
--
Chris E. Thompson
chrisethompson@?????.???
g0kla@????.???
------------------------------
Message: 3
Date: Mon, 3 Feb 2020 13:49:54 +1100
From: Pete vk2pet <vk2pet@?????????.??.???>
To: amsat-bb@?????.???
Subject: [amsat-bb] Foxtelem
Message-ID: <7dee1809-77ed-14bd-65bf-931dad8c2f19@?????????.??.???>
Content-Type: text/plain; charset=utf-8; format=flowed
Good afternoon from a hot Australia.
I'm trying my hand at Foxtelm, but I can't get it to work.
Setup is:
IC9100, output is on Data1 on the discriminator tap, into the line in on
the computer. (ic9100 is set to it's wide band width, 15khz)
Antenna setup is 2 x 16 element ((crossed polarized) vhf & uhf beams on?
GG5500 rorator.
Line tap is going into a win10 pro machine running Foxtelem, sound card
is set to 48000hz.
I have read the instructions & everything seams to as same as the
instructions, but still no data.
Any ideas?
73'3
Pete Chatwin
vk2pet
------------------------------
Message: 4
Date: Mon, 3 Feb 2020 10:45:17 -0500
From: James Jipping <jhjipping@?????.???>
To: amsat-bb@?????.???
Subject: [amsat-bb] FoxTelem
Message-ID: <50333e0f-892c-5946-aeee-19f66f6e2552@?????.???>
Content-Type: text/plain; charset=utf-8; format=flowed
Good Morning.
Getting setup to copy telemetry from HuskeySat-1.? Are the Keps for the
bird correct in FoxTelem and/or SDRConsol/ satellites??
Is NasaBare.txt correct ??? I can track using SatPC32? w/Foxtelem/
FUNCube Pro or SDRConsol w/wispdde/ FUNCube Pro.? Any advice ?? Thank you!!
Jim , W8MRR (AMSAT #5512)
------------------------------
Message: 5
Date: Mon, 3 Feb 2020 14:27:29 -0500
From: Burns Fisher <wb1fj-bb@??????.??>
To: James Jipping <jhjipping@?????.???>
Cc: AMSAT BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] FoxTelem
Message-ID:
<CABX7KxUpG=OExM_o1rMwGz_LwJreH2cV-_QxH10VM+ndZA9iqQ@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Nasabare has it with the name HuskySat-1. I'm not sure if that this the
name by default in FoxTelem. Just pull down the "spacecraft" menu and look
at the top line "Name (for keps)" and change it to HuskySat-1 if it is not
that already. After that you should be good.
At this point we are still learning how to work best with FoxTelem.
Different people have better luck with the "Costas" decoder or the DP
decoder (radio buttons on the top of the main screen). And you seem to
need a fairly strong signal at this point. I need a beam and a preamp for
example.
No experience with SDRConsole.
Thanks for collecting telemetry! UW and AMSAT are both pleased to get more!
On Mon, Feb 3, 2020 at 10:48 AM James Jipping via AMSAT-BB <
amsat-bb@?????.???> wrote:
> Good Morning.
>
> Getting setup to copy telemetry from HuskeySat-1. Are the Keps for the
> bird correct in FoxTelem and/or SDRConsol/ satellites??
> Is NasaBare.txt correct ?? I can track using SatPC32 w/Foxtelem/
> FUNCube Pro or SDRConsol w/wispdde/ FUNCube Pro. Any advice ?? Thank you!!
>
> Jim , W8MRR (AMSAT #5512)
> _______________________________________________
> 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: 6
Date: Mon, 3 Feb 2020 19:42:35 +0000 (UTC)
From: Nitin Muttin <vu3tyg@?????.??.??>
To: James Jipping <jhjipping@?????.???>, Burns Fisher
<wb1fj-bb@??????.??>
Cc: AMSAT BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] FoxTelem
Message-ID: <1182694584.939540.1580758955550@????.?????.???>
Content-Type: text/plain; charset=UTF-8
Thanks Burns, I have been trying with the eggbeater antennas + preamp, I can
hear the signals but unable to decode. I too think will need a yagi for 435.
73
Nitin [VU3TYG]
On Tuesday, 4 February, 2020, 01:01:31 am IST, Burns Fisher via AMSAT-BB
<amsat-bb@?????.???> wrote:
Nasabare has it with the name HuskySat-1.? I'm not sure if that this the
name by default in FoxTelem.? Just pull down the "spacecraft" menu and look
at the top line "Name (for keps)" and change it to HuskySat-1 if it is not
that already.? After that you should be good.
At this point we are still learning how to work best with FoxTelem.
Different people have better luck with the "Costas" decoder or the DP
decoder (radio buttons on the top of the main screen).? And you seem to
need a fairly strong signal at this point.? I need a beam and a preamp for
example.
No experience with SDRConsole.
Thanks for collecting telemetry!? UW and AMSAT are both pleased to get more!
On Mon, Feb 3, 2020 at 10:48 AM James Jipping via AMSAT-BB <
amsat-bb@?????.???> wrote:
> Good Morning.
>
> Getting setup to copy telemetry from HuskeySat-1.? Are the Keps for the
> bird correct in FoxTelem and/or SDRConsol/ satellites??
> Is NasaBare.txt correct ??? I can track using SatPC32? w/Foxtelem/
> FUNCube Pro or SDRConsol w/wispdde/ FUNCube Pro.? Any advice ?? Thank you!!
>
> Jim , W8MRR (AMSAT #5512)
> _______________________________________________
> 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: Mon, 3 Feb 2020 14:12:04 -0600
From: JoAnne K9JKM <k9jkm@???????.???>
To: amsat-bb@?????.???
Subject: Re: [amsat-bb] FoxTelem
Message-ID: <5E387E94.8030407@???????.???>
Content-Type: text/plain; charset=windows-1252; format=flowed
Just a couple of observations ...
> Different people have better luck with the "Costas" decoder or the DP
> decoder (radio buttons on the top of the main screen).
Costas seems to be easier to use for me. I'm tracking Doppler manually
so it's easier to see a good lock once I get it.
> And you seem to need a fairly strong signal at this point. I need a
> beam and a preamp for example.
I'm using a 7 element yagi, 20 degree fixed elevation with an azimuth
rotor. I see from the decoded telemetry that the Forward Power has
ranged between 111 mW and 636 mW. Received signal on my end depends a
lot on which trees are in the way ;-)
--
73 de JoAnne K9JKM
k9jkm@?????.???
------------------------------
Message: 8
Date: Mon, 3 Feb 2020 15:38:37 -0500
From: Bob <WB4SON@?????.???>
To: AMSAT-BB <AMSAT-BB@?????.???>
Subject: [amsat-bb] Help with new SatPC32 Setup with IC-9700
Message-ID:
<CAPonRZ9bypNQ4F0EaEdyTjD_7_+ay1wZSV=qNEO7k9O-qwh3sg@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
I have just downloaded and installed a new copy of SatPC32 12.8d and
registered it. I'm using it with a new radio as well, an IC-9700. I did
all the things I thought I remembered to setup the program and radio, and
it sort of works....
My problem is when the program starts up, it will shift the radio into the
Satellite Mode (good), and if I toggle the "C-/C+" CAT ON/OFF command, it
will take the calculated frequency and set the radio correctly (good).
However the radio is frequency is never updated after that, despite having
a CAT Tuning Interval of 30 Hertz for SSB. If I toggle the "C" command
off, then back on, it will update once, but never again. The other
interesting thing is the manual tuning controls (the arrows to the right of
the frequency display on SatPC32) work all the time. Click up 1k and the
Downlink changes by 1k.
All of the above seems to make me think that the radio and SatPC32 have
been setup correctly (and are talking to each other), but I don't
understand why I just get an initial frequency correction and nothing
else. Likely some bone-headed thing I have forgotten to do. Any ideas?
The other odd thing is that I can't fix the map to be stationary on the
observer -- it always follows the satellite. I've stored that setting and
restarted several times.
Thanks in advance!
73, Bob, WB4SON
------------------------------
Message: 9
Date: Mon, 3 Feb 2020 15:58:31 -0500
From: Bob <WB4SON@?????.???>
To: Jeff Griffin <kb2m@????.???>, AMSAT-BB <AMSAT-BB@?????.???>
Subject: Re: [amsat-bb] Help with new SatPC32 Setup with IC-9700
Message-ID:
<CAPonRZ-jEvfF-aqi73mYmxaV53PUuQBGGOB0mVBdswxjky4eyQ@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Hi Jeff,
Thanks for the tip!
I did answer one of my two questions myself. I had failed to turn "CI-V
USB Echo Back" ON in the IC-9700 settings, and without that, it won't do
more than one step (I guess it fails to hear back from the radio that it
succeeded). So turning that ON, allows it to correct for Doppler per the
CAT Setting step size.
Still can't get the map to stay centered on my observer location.
73, Bob, WB4SON
On Mon, Feb 3, 2020 at 3:55 PM Jeff <kb2mjeff@???.???> wrote:
> Hi Bob. Try resetting your USB connection by removing/ plug in the cable
> from the 9700 and restart SatPC32. I also had the same issue of the
> program
> following the sat instead of my location a few months ago when setting up
> a
> new laptop with SatPC32. Even though I had observer selected as the center
> map on it didn't take after a store and reboot of the program. I think it
> fixed it's self after a windows reboot.
>
> 73 Jeff kb2m
>
> -----Original Message-----
> From: AMSAT-BB <amsat-bb-bounces@?????.???> On Behalf Of Bob via AMSAT-BB
> Sent: Monday, February 03, 2020 15:39
> To: AMSAT-BB <AMSAT-BB@?????.???>
> Subject: [amsat-bb] Help with new SatPC32 Setup with IC-9700
>
> I have just downloaded and installed a new copy of SatPC32 12.8d and
> registered it. I'm using it with a new radio as well, an IC-9700. I did
> all
> the things I thought I remembered to setup the program and radio, and it
> sort of works....
>
> My problem is when the program starts up, it will shift the radio into the
> Satellite Mode (good), and if I toggle the "C-/C+" CAT ON/OFF command, it
> will take the calculated frequency and set the radio correctly (good).
> However the radio is frequency is never updated after that, despite having
> a
> CAT Tuning Interval of 30 Hertz for SSB. If I toggle the "C" command off,
> then back on, it will update once, but never again. The other interesting
> thing is the manual tuning controls (the arrows to the right of the
> frequency display on SatPC32) work all the time. Click up 1k and the
> Downlink changes by 1k.
>
> All of the above seems to make me think that the radio and SatPC32 have
> been
> setup correctly (and are talking to each other), but I don't understand why
> I just get an initial frequency correction and nothing else. Likely some
> bone-headed thing I have forgotten to do. Any ideas?
>
> The other odd thing is that I can't fix the map to be stationary on the
> observer -- it always follows the satellite. I've stored that setting and
> restarted several times.
>
> Thanks in advance!
>
> 73, Bob, WB4SON
> _______________________________________________
> 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: 10
Date: Mon, 3 Feb 2020 16:04:56 -0500
From: Dave Webb KB1PVH <kb1pvh@?????.???>
To: Bob <WB4SON@?????.???>
Cc: AMSAT-BB <AMSAT-BB@?????.???>
Subject: Re: [amsat-bb] Help with new SatPC32 Setup with IC-9700
Message-ID:
<CAEMY9FfDx0a+x=6Y=UcZApS35tKbrzYXpBnp+LesNpamG0rs2g@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Bob,
Make sure all your settings are correct.
http://www.dk1tb.de/IC9700_settings.htm
Dave-KB1PVH
Sent from my Galaxy S9
On Mon, Feb 3, 2020, 3:41 PM Bob via AMSAT-BB <amsat-bb@?????.???> wrote:
> I have just downloaded and installed a new copy of SatPC32 12.8d and
> registered it. I'm using it with a new radio as well, an IC-9700. I did
> all the things I thought I remembered to setup the program and radio, and
> it sort of works....
>
> My problem is when the program starts up, it will shift the radio into the
> Satellite Mode (good), and if I toggle the "C-/C+" CAT ON/OFF command, it
> will take the calculated frequency and set the radio correctly (good).
> However the radio is frequency is never updated after that, despite having
> a CAT Tuning Interval of 30 Hertz for SSB. If I toggle the "C" command
> off, then back on, it will update once, but never again. The other
> interesting thing is the manual tuning controls (the arrows to the right of
> the frequency display on SatPC32) work all the time. Click up 1k and the
> Downlink changes by 1k.
>
> All of the above seems to make me think that the radio and SatPC32 have
> been setup correctly (and are talking to each other), but I don't
> understand why I just get an initial frequency correction and nothing
> else. Likely some bone-headed thing I have forgotten to do. Any ideas?
>
> The other odd thing is that I can't fix the map to be stationary on the
> observer -- it always follows the satellite. I've stored that setting and
> restarted several times.
>
> Thanks in advance!
>
> 73, Bob, WB4SON
> _______________________________________________
> 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: Mon, 3 Feb 2020 22:33:18 +0100
From: Erich Eichmann <erich.eichmann@????????.??>
To: Bob <WB4SON@?????.???>, AMSAT-BB@?????.???
Subject: Re: [amsat-bb] Help with new SatPC32 Setup with IC-9700
Message-ID: <7244f611-ec9c-cca2-9bbd-419f8ea9e222@????????.??>
Content-Type: text/plain; charset=utf-8; format=flowed
Hi Bob,
the option 'Center map on ... Observer'? works only with the Zoom 1 maps
(Z1). Whith Z2 the map is always centered on the satellite to avoid that
the footprint gets out of the program window.
73s, Erich, DK1TB
Am 03.02.2020 um 21:58 schrieb Bob via AMSAT-BB:
> Hi Jeff,
>
> Thanks for the tip!
>
> I did answer one of my two questions myself. I had failed to turn "CI-V
> USB Echo Back" ON in the IC-9700 settings, and without that, it won't do
> more than one step (I guess it fails to hear back from the radio that it
> succeeded). So turning that ON, allows it to correct for Doppler per the
> CAT Setting step size.
>
> Still can't get the map to stay centered on my observer location.
>
> 73, Bob, WB4SON
>
> On Mon, Feb 3, 2020 at 3:55 PM Jeff <kb2mjeff@???.???> wrote:
>
> Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 12
Date: Mon, 3 Feb 2020 16:34:18 -0500
From: Bob <WB4SON@?????.???>
To: Erich Eichmann <erich.eichmann@????????.??>
Cc: AMSAT-BB <AMSAT-BB@?????.???>
Subject: Re: [amsat-bb] Help with new SatPC32 Setup with IC-9700
Message-ID:
<CAPonRZ9dyMTJKS0fgAk3hfyXVV7fmLsPXwy6e6efSjHNsh7jLA@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Thanks so much, that Z2 setting was my issue -- now on Z1 everything fits!
And thank you for all the changes, Erich. Very nice improvements to the
latest!
73, Bob, WB4SON
On Mon, Feb 3, 2020 at 4:33 PM Erich Eichmann <erich.eichmann@????????.??>
wrote:
> Hi Bob,
> the option 'Center map on ... Observer' works only with the Zoom 1 maps
> (Z1). Whith Z2 the map is always centered on the satellite to avoid that
> the footprint gets out of the program window.
> 73s, Erich, DK1TB
>
> Am 03.02.2020 um 21:58 schrieb Bob via AMSAT-BB:
> > Hi Jeff,
> >
> > Thanks for the tip!
> >
> > I did answer one of my two questions myself. I had failed to turn "CI-V
> > USB Echo Back" ON in the IC-9700 settings, and without that, it won't do
> > more than one step (I guess it fails to hear back from the radio that it
> > succeeded). So turning that ON, allows it to correct for Doppler per the
> > CAT Setting step size.
> >
> > Still can't get the map to stay centered on my observer location.
> >
> > 73, Bob, WB4SON
> >
> > On Mon, Feb 3, 2020 at 3:55 PM Jeff <kb2mjeff@???.???> wrote:
> >
> > Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb
>
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End of AMSAT-BB Digest, Vol 15, Issue 30
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