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CX2SA > SATDIG 27.03.20 01:00l 854 Lines 29939 Bytes #999 (0) @ WW
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From: CX2SA@CX2SA.SAL.URY.SOAM
To : SATDIG@WW
Today's Topics:
1. ISS APRS with an HT (Steve Kristoff)
2. Re: ISS APRS with an HT (saguaroastro)
3. Re: ISS APRS with an HT (John Brier)
4. Re: ISS APRS with an HT (Brian Clark)
5. Re: ISS APRS with an HT (Brian Wilkins KO4AQF)
6. Re: ISS APRS with an HT (Scott)
7. Re: ISS APRS with an HT (Brian Wilkins KO4AQF)
8. ELaNa-20 - Will it ever happen? (Roy Dean)
9. Re: ELaNa-20 - Will it ever happen? (Paul Stoetzer)
10. Re: ELaNa-20 - Will it ever happen? (Robert Bankston)
11. Re: ELaNa-20 - Will it ever happen? (JoAnne K9JKM)
12. Re: ISS APRS with an HT (Brian Wilkins KO4AQF)
----------------------------------------------------------------------
Message: 1
Date: Wed, 25 Mar 2020 19:00:18 -0400
From: "Steve Kristoff" <skristof@???????.???>
To: amsat-bb@?????.???
Subject: [amsat-bb] ISS APRS with an HT
Message-ID: <559131307235e0197c5b1d006eb6b558@???????.???>
Content-Type: text/plain; charset=UTF-8
?Has anyone been able to digipeat APRS through the ISS with a 5 watt HT and
an Arrow antenna lately? If so, what are your secrets for success?
If 5 watts and an Arrow doesn't work please let me know that, too, so I can
pursue a different aspect of our hobby.
thanks!
Steve AI9IN
Grid EM79ji
Oldenburg IN 47036
------------------------------
Message: 2
Date: Wed, 25 Mar 2020 16:17:26 -0700
From: saguaroastro <saguaroastro@???.???>
To: Steve Kristoff <skristof@???????.???>, amsat-bb@?????.???
Subject: Re: [amsat-bb] ISS APRS with an HT
Message-ID: <20200325231728.5E5D28567@??????????.?????.???>
Content-Type: text/plain; charset=utf-8
I"ve done it with a D72A and Elk, but not since they've had the radio
problems that took it off line for a while. I imagine it'll be better when
they install the new radios.73Rick Tejera (K7TEJ)Saguaro Astronomy
ClubWww.saguaroastro.orgThunderbird Astronomy ClubWww.w7tbc.org
-------- Original message --------From: Steve Kristoff via AMSAT-BB
<amsat-bb@?????.???> Date: 3/25/20 16:01 (GMT-07:00) To:
amsat-bb@?????.??? Subject: [amsat-bb] ISS APRS with an HT ?Has anyone been
able to digipeat APRS through the ISS with a 5 watt HT and an Arrow antenna
lately? If so, what are your secrets for success?If 5 watts and an Arrow
doesn't work please let me know that, too, so I can pursue a different
aspect of our hobby.thanks!Steve AI9INGrid EM79jiOldenburg IN
47036_______________________________________________Sent via
AMSAT-BB@?????.???. AMSAT-NA makes this open forum availableto all
interested persons worldwide without requiring membership. Opinions
expressedare 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: 3
Date: Wed, 25 Mar 2020 19:18:00 -0400
From: John Brier <johnbrier@?????.???>
To: Steve Kristoff <skristof@???????.???>
Cc: AMSAT BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] ISS APRS with an HT
Message-ID:
<CALn0fKPwdXzcnPBrqEB-gN5jPaLC757RXKaq5dNMSeNeyoE64A@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
I got through it on March 21st on a 12 degree pass using a TH-D72 and an
Arrow:
https://twitter.com/SpaceComms1/status/1241598936814694400?s=19
It was hard, as I believe it is a little deaf or not decoding consistently
based on past reports. Some have said it seems to be easier with Kenwood
radios.
They are sending up a new Kenwood radio system soon that supports
digipeater ops so don't dismiss this mode entirely!
73' John Brier KG4AKV
On Wed, Mar 25, 2020, 19:02 Steve Kristoff via AMSAT-BB <amsat-bb@?????.???>
wrote:
>
> Has anyone been able to digipeat APRS through the ISS with a 5 watt HT
> and an Arrow antenna lately? If so, what are your secrets for success?
> If 5 watts and an Arrow doesn't work please let me know that, too, so I
> can pursue a different aspect of our hobby.
> thanks!
> Steve AI9IN
> Grid EM79ji
> Oldenburg IN 47036
>
> _______________________________________________
> 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: 4
Date: Wed, 25 Mar 2020 16:26:38 -0700
From: Brian Clark <decompudoc@?????.???>
To: Steve Kristoff <skristof@???????.???>
Cc: amsat-bb@?????.???
Subject: Re: [amsat-bb] ISS APRS with an HT
Message-ID: <5E30C709-CCB9-426C-8C68-E564479749EA@?????.???>
Content-Type: text/plain; charset=utf-8
Hi Steve,
I have been able to do so the last two evenings. One thing that I have
noticed is, that I don?t see the packets being igated.
I have been able to send and receive packets through the ISS with other
amateurs, but they are not being igated.
I am wondering if they have begun to implement the new radio system, but the
path down to land based igated, isn?t set correctly.
5 watts is plenty to get up to the ISS.
73?s KF6FES
Brian
> On Mar 25, 2020, at 4:02 PM, Steve Kristoff via AMSAT-BB
<amsat-bb@?????.???> wrote:
>
> ?
> Has anyone been able to digipeat APRS through the ISS with a 5 watt HT
and an Arrow antenna lately? If so, what are your secrets for success?
> If 5 watts and an Arrow doesn't work please let me know that, too, so I
can pursue a different aspect of our hobby.
> thanks!
> Steve AI9IN
> Grid EM79ji
> Oldenburg IN 47036
>
> _______________________________________________
> 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: Wed, 25 Mar 2020 19:26:39 -0400
From: Brian Wilkins KO4AQF <bwilkins@?????.???>
To: John Brier <johnbrier@?????.???>
Cc: AMSAT BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] ISS APRS with an HT
Message-ID:
<CAO_Eq32L07GYkxLzqSJ_jk19pWMws-ub6BK83JV7Yb7rtQD0QA@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
I had no issue until it went offline and then came back. I believe one of
the iGates near me may have went offline since the ISS APRS pause as ISS is
confirming my messages however nothing is showing up on ariss.net and I can
exchange messages with others. I am considering building my own APRS RX
iGate from an RTLSDR and Raspberry Pi just to digipeat my own packers back
to APRS.fi website
On Wed, Mar 25, 2020 at 7:22 PM John Brier via AMSAT-BB <amsat-bb@?????.???>
wrote:
> I got through it on March 21st on a 12 degree pass using a TH-D72 and an
> Arrow:
>
> https://twitter.com/SpaceComms1/status/1241598936814694400?s=19
>
> It was hard, as I believe it is a little deaf or not decoding consistently
> based on past reports. Some have said it seems to be easier with Kenwood
> radios.
>
> They are sending up a new Kenwood radio system soon that supports
> digipeater ops so don't dismiss this mode entirely!
>
> 73' John Brier KG4AKV
>
> On Wed, Mar 25, 2020, 19:02 Steve Kristoff via AMSAT-BB <
> amsat-bb@?????.???>
> wrote:
>
> >
> > Has anyone been able to digipeat APRS through the ISS with a 5 watt HT
> > and an Arrow antenna lately? If so, what are your secrets for success?
> > If 5 watts and an Arrow doesn't work please let me know that, too, so I
> > can pursue a different aspect of our hobby.
> > thanks!
> > Steve AI9IN
> > Grid EM79ji
> > Oldenburg IN 47036
> >
> > _______________________________________________
> > 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
>
--
Brian Wilkins
KO4AQF
------------------------------
Message: 6
Date: Wed, 25 Mar 2020 20:56:43 -0400
From: Scott <scott23192@?????.???>
To: AMSAT BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] ISS APRS with an HT
Message-ID:
<CAJCSnOYpQUy4LiWkcQnovhsRnMHu8_wUCzy5QYe+-w4MkhaBpQ@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Hi Brian & everyone.
Websites like ARISS.net monitor the APRS traffic and display a list of
packets that match certain criteria. In the case of a site that wants to
display packets digipeated via the ISS, they're looking for "RS0ISS*",
which is appended to the digipeat path of a packet that is relayed thru the
ISS.
When it works correctly, you transmit a packet that is digipeated by the
ISS and the digipeat from the ISS is heard by an iGate that puts it onto
the internet for sites like ARISS.net to display.
However, generally speaking, the APRS network is designed to toss out
"duplicate" packets. And as you might imagine, it's
first-come-first-served.
If you'll notice on the following link to a screen shot:
https://www.qsl.net/k/k4kdr//images/KO4AQF-digipeats.png
... the vast majority of your packets are being heard DIRECTLY by in iGate
run by W4GCW. So, a good portion of the time, when you get digipeated via
the ISS, the APRS network considers that a duplicate and it's discarded.
YOU (and others) might hear it off the air, but it'll never show up online
anywhere.
In the same image you can contrast those locally heard packets with packets
that were digipeated & uploaded by iGate's KE4AZZ-3 & KC5ILO-12... of
course that's how it's supposed to work.
You might want to reach out to W4GCW to see if he'll filter out your call
sign on his iGate to give your digipeated packets a chance to be heard by
an iGate and get forwarded onto the greater APRS network as DIGIPEATS
(instead of being discarded as duplicates).
-Scott, K4KDR
==========================
On Wed, Mar 25, 2020 at 7:30 PM Brian Wilkins KO4AQF via AMSAT-BB <
amsat-bb@?????.???> wrote:
> I had no issue until it went offline and then came back. I believe one of
> the iGates near me may have went offline since the ISS APRS pause as ISS is
> confirming my messages however nothing is showing up on ariss.net and I
> can
> exchange messages with others. I am considering building my own APRS RX
> iGate from an RTLSDR and Raspberry Pi just to digipeat my own packers back
> to APRS.fi website
>
> On Wed, Mar 25, 2020 at 7:22 PM John Brier via AMSAT-BB <
> amsat-bb@?????.???>
> wrote:
>
> > I got through it on March 21st on a 12 degree pass using a TH-D72 and an
> > Arrow:
> >
> > https://twitter.com/SpaceComms1/status/1241598936814694400?s=19
> >
> > It was hard, as I believe it is a little deaf or not decoding
> consistently
> > based on past reports. Some have said it seems to be easier with Kenwood
> > radios.
> >
> > They are sending up a new Kenwood radio system soon that supports
> > digipeater ops so don't dismiss this mode entirely!
> >
> > 73' John Brier KG4AKV
> >
> > On Wed, Mar 25, 2020, 19:02 Steve Kristoff via AMSAT-BB <
> > amsat-bb@?????.???>
> > wrote:
> >
> > >
> > > Has anyone been able to digipeat APRS through the ISS with a 5 watt HT
> > > and an Arrow antenna lately? If so, what are your secrets for success?
> > > If 5 watts and an Arrow doesn't work please let me know that, too, so I
> > > can pursue a different aspect of our hobby.
> > > thanks!
> > > Steve AI9IN
> > > Grid EM79ji
> > > Oldenburg IN 47036
> > >
> > > _______________________________________________
>
>
>
------------------------------
Message: 7
Date: Wed, 25 Mar 2020 21:33:52 -0400
From: Brian Wilkins KO4AQF <bwilkins@?????.???>
To: Scott <scott23192@?????.???>
Cc: AMSAT BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] ISS APRS with an HT
Message-ID:
<CAO_Eq33GgX7TSrLm73U7xQv_oLDYBMkMLoDEMmVTWJa1vL1cRg@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
That makes sense to me and I will contact him. He is my neighbor. What I am
not clear on is why all of a sudden it stopped working when it was working
prior to the ISS APRS shutdown. It may also explain why when I see you
(K4KDR) and send messages via the ISS (or what I am told is being
digipeated because my radio gets a message that the ISS received it) you
never see them. I have been trying off and on for a couple months now to
reach you. I have successfully reached N1RCN on multiple occasions.
On Wed, Mar 25, 2020 at 8:59 PM Scott via AMSAT-BB <amsat-bb@?????.???>
wrote:
> Hi Brian & everyone.
>
> Websites like ARISS.net monitor the APRS traffic and display a list of
> packets that match certain criteria. In the case of a site that wants to
> display packets digipeated via the ISS, they're looking for "RS0ISS*",
> which is appended to the digipeat path of a packet that is relayed thru the
> ISS.
>
> When it works correctly, you transmit a packet that is digipeated by the
> ISS and the digipeat from the ISS is heard by an iGate that puts it onto
> the internet for sites like ARISS.net to display.
>
> However, generally speaking, the APRS network is designed to toss out
> "duplicate" packets. And as you might imagine, it's
> first-come-first-served.
>
> If you'll notice on the following link to a screen shot:
>
> https://www.qsl.net/k/k4kdr//images/KO4AQF-digipeats.png
>
> ... the vast majority of your packets are being heard DIRECTLY by in iGate
> run by W4GCW. So, a good portion of the time, when you get digipeated via
> the ISS, the APRS network considers that a duplicate and it's discarded.
> YOU (and others) might hear it off the air, but it'll never show up online
> anywhere.
>
> In the same image you can contrast those locally heard packets with packets
> that were digipeated & uploaded by iGate's KE4AZZ-3 & KC5ILO-12... of
> course that's how it's supposed to work.
>
> You might want to reach out to W4GCW to see if he'll filter out your call
> sign on his iGate to give your digipeated packets a chance to be heard by
> an iGate and get forwarded onto the greater APRS network as DIGIPEATS
> (instead of being discarded as duplicates).
>
> -Scott, K4KDR
>
> ==========================
>
> On Wed, Mar 25, 2020 at 7:30 PM Brian Wilkins KO4AQF via AMSAT-BB <
> amsat-bb@?????.???> wrote:
>
> > I had no issue until it went offline and then came back. I believe one of
> > the iGates near me may have went offline since the ISS APRS pause as ISS
> is
> > confirming my messages however nothing is showing up on ariss.net and I
> > can
> > exchange messages with others. I am considering building my own APRS RX
> > iGate from an RTLSDR and Raspberry Pi just to digipeat my own packers
> back
> > to APRS.fi website
> >
> > On Wed, Mar 25, 2020 at 7:22 PM John Brier via AMSAT-BB <
> > amsat-bb@?????.???>
> > wrote:
> >
> > > I got through it on March 21st on a 12 degree pass using a TH-D72 and
> an
> > > Arrow:
> > >
> > > https://twitter.com/SpaceComms1/status/1241598936814694400?s=19
> > >
> > > It was hard, as I believe it is a little deaf or not decoding
> > consistently
> > > based on past reports. Some have said it seems to be easier with
> Kenwood
> > > radios.
> > >
> > > They are sending up a new Kenwood radio system soon that supports
> > > digipeater ops so don't dismiss this mode entirely!
> > >
> > > 73' John Brier KG4AKV
> > >
> > > On Wed, Mar 25, 2020, 19:02 Steve Kristoff via AMSAT-BB <
> > > amsat-bb@?????.???>
> > > wrote:
> > >
> > > >
> > > > Has anyone been able to digipeat APRS through the ISS with a 5 watt
> HT
> > > > and an Arrow antenna lately? If so, what are your secrets for
> success?
> > > > If 5 watts and an Arrow doesn't work please let me know that, too,
> so I
> > > > can pursue a different aspect of our hobby.
> > > > thanks!
> > > > Steve AI9IN
> > > > Grid EM79ji
> > > > Oldenburg IN 47036
> > > >
> > > > _______________________________________________
> >
> >
> >
> _______________________________________________
> 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
>
--
Brian Wilkins
KO4AQF
------------------------------
Message: 8
Date: Thu, 26 Mar 2020 09:19:41 -0400
From: Roy Dean <royldean@?????.???>
To: amsat-bb@?????.???
Subject: [amsat-bb] ELaNa-20 - Will it ever happen?
Message-ID:
<CADGPg2vEXk3xqY9oqKoDWkAhqzbN-FvZAV=HKcJyNPpuRmPqvg@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
So I've been following the progress (or lack thereof) of LauncherOne for a
while. Ignoring the whole CV problem, is this launch really going to ever
happen? It seems that as we get "closer" to the actual demo launch - we
get less and less info.
I guess bad timing to ask this question..... CV may be the straw that
breaks the camel's back?
--Roy
K3RLD
------------------------------
Message: 9
Date: Thu, 26 Mar 2020 09:32:57 -0400
From: Paul Stoetzer <n8hm@????.???>
To: Roy Dean <royldean@?????.???>
Cc: AMSAT BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] ELaNa-20 - Will it ever happen?
Message-ID:
<CABzOSOo=PzUPTmaXyAt35n=zqeMoacy+vbFr7B-QcjX+MXbFuw@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Virgin Orbit posted the following statement on Twitter:
https://twitter.com/Virgin_Orbit/status/1241168535759380480/photo/1
73,
Paul, N8HM
On Thu, Mar 26, 2020 at 9:20 AM Roy Dean via AMSAT-BB
<amsat-bb@?????.???> wrote:
>
> So I've been following the progress (or lack thereof) of LauncherOne for a
> while. Ignoring the whole CV problem, is this launch really going to ever
> happen? It seems that as we get "closer" to the actual demo launch - we
> get less and less info.
>
> I guess bad timing to ask this question..... CV may be the straw that
> breaks the camel's back?
>
> --Roy
> K3RLD
> _______________________________________________
> 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: Thu, 26 Mar 2020 13:33:53 +0000 (UTC)
From: Robert Bankston <ke4al@?????.???>
To: amsat-bb@?????.???
Subject: Re: [amsat-bb] ELaNa-20 - Will it ever happen?
Message-ID: <173227170.2417713.1585229633988@????.?????.???>
Content-Type: text/plain; charset=UTF-8
Have a little faith:??Virgin Orbit?s space launch business deemed ?essential
service,? work allowed to continue at Long
Beach?https://spacenews.com/virgin-orbits-space-launch-business-deemed-essenti
al-service-work-allowed-to-continue-at-long-beach/
??
73,
??
Robert, KE4AL
On Thursday, March 26, 2020, 08:21:03 AM CDT, Roy Dean via AMSAT-BB
<amsat-bb@?????.???> wrote:
So I've been following the progress (or lack thereof) of LauncherOne for a
while.? Ignoring the whole CV problem, is this launch really going to ever
happen?? It seems that as we get "closer" to the actual demo launch - we
get less and less info.
I guess bad timing to ask this question.....? CV may be the straw that
breaks the camel's back?
--Roy
K3RLD
_______________________________________________
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, 26 Mar 2020 08:51:37 -0500
From: JoAnne K9JKM <joanne.k9jkm@?????.???>
To: amsat-bb@?????.???
Subject: Re: [amsat-bb] ELaNa-20 - Will it ever happen?
Message-ID: <bf3c91f8-2115-3118-8da0-8f5c4eee0c2b@?????.???>
Content-Type: text/plain; charset=utf-8; format=flowed
Interesting that anyone can refer to even a public web posting about
VirginOrbit status on an AMSAT list. Waiting to see who falls out of
their chair when they see this.
On 3/26/2020 8:33 AM, Robert Bankston via AMSAT-BB wrote:
> Have a little faith:??Virgin Orbit?s space launch business deemed
?essential service,? work allowed to continue at Long
Beach?https://spacenews.com/virgin-orbits-space-launch-business-deemed-essenti
al-service-work-allowed-to-continue-at-long-beach/
>
>
> 73,
>
> Robert, KE4AL
>
>
>
>
>
> On Thursday, March 26, 2020, 08:21:03 AM CDT, Roy Dean via AMSAT-BB
<amsat-bb@?????.???> wrote:
>
>
>
>
>
> So I've been following the progress (or lack thereof) of LauncherOne for a
> while.? Ignoring the whole CV problem, is this launch really going to ever
> happen?? It seems that as we get "closer" to the actual demo launch - we
> get less and less info.
>
> I guess bad timing to ask this question.....? CV may be the straw that
> breaks the camel's back?
>
> --Roy
> K3RLD
> _______________________________________________
> 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
--
73 de JoAnne K9JKM
joanne.k9jkm@?????.???
------------------------------
Message: 12
Date: Thu, 26 Mar 2020 18:40:24 -0400
From: Brian Wilkins KO4AQF <bwilkins@?????.???>
To: Scott <scott23192@?????.???>
Cc: AMSAT BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] ISS APRS with an HT
Message-ID:
<CAO_Eq31F15McbHD94h+osoZoCxFMnwhj4kUE2Vh7KFO2mA+yhA@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
In the past day, I have been working with W4GCW and KJ4EJR (author of
APRSIS32 and APRSISCE who lives in my County)
There is no way not to filter based on callsign and his software is
compliant to the APRS-IS specification. Therefore, there is no way to
prevent the iGate of my messages. W4GCW says he does not listen on the ISS
frequency and rather the standard APRS frequency. Below is a response from
KJ4EJR when I asked him if it?s possible to filter out my packets.
?per the IGate specs at http://www.aprs-is.net/IGateDetails.aspx
Gate all packets heard on RF to the Internet *EXCEPT* if any of the
following are true:
1. (AX.25 RF) The packet does not have a control field of 0x03 or a PID
of 0xf0.
2. The TNC has PASSALL turned on.
3. 3rd-party packets (data type } ) with TCPIP or TCPXX in the 3rd party
header.
3rd-party packets without TCPXX or TCPIP mnust have the RF header and
the 3rd party data type stripped before passing to APRS-IS.
4. generic queries (data type ? ).
5. packets with TCPIP, TCPXX, NOGATE, or RFONLY in the header (last 2
are optional).
You will notice that there is NOT any option for blacklisting or otherwise
not forwarding RF-received packets to the APRS-IS for spec-compliant IGate
operation.?
On Wed, Mar 25, 2020 at 9:33 PM Brian Wilkins KO4AQF <bwilkins@?????.???>
wrote:
> That makes sense to me and I will contact him. He is my neighbor. What I
> am not clear on is why all of a sudden it stopped working when it was
> working prior to the ISS APRS shutdown. It may also explain why when I see
> you (K4KDR) and send messages via the ISS (or what I am told is being
> digipeated because my radio gets a message that the ISS received it) you
> never see them. I have been trying off and on for a couple months now to
> reach you. I have successfully reached N1RCN on multiple occasions.
>
>
> On Wed, Mar 25, 2020 at 8:59 PM Scott via AMSAT-BB <amsat-bb@?????.???>
> wrote:
>
>> Hi Brian & everyone.
>>
>> Websites like ARISS.net monitor the APRS traffic and display a list of
>> packets that match certain criteria. In the case of a site that wants to
>> display packets digipeated via the ISS, they're looking for "RS0ISS*",
>> which is appended to the digipeat path of a packet that is relayed thru
>> the
>> ISS.
>>
>> When it works correctly, you transmit a packet that is digipeated by the
>> ISS and the digipeat from the ISS is heard by an iGate that puts it onto
>> the internet for sites like ARISS.net to display.
>>
>> However, generally speaking, the APRS network is designed to toss out
>> "duplicate" packets. And as you might imagine, it's
>> first-come-first-served.
>>
>> If you'll notice on the following link to a screen shot:
>>
>> https://www.qsl.net/k/k4kdr//images/KO4AQF-digipeats.png
>>
>> ... the vast majority of your packets are being heard DIRECTLY by in iGate
>> run by W4GCW. So, a good portion of the time, when you get digipeated via
>> the ISS, the APRS network considers that a duplicate and it's discarded.
>> YOU (and others) might hear it off the air, but it'll never show up online
>> anywhere.
>>
>> In the same image you can contrast those locally heard packets with
>> packets
>> that were digipeated & uploaded by iGate's KE4AZZ-3 & KC5ILO-12... of
>> course that's how it's supposed to work.
>>
>> You might want to reach out to W4GCW to see if he'll filter out your call
>> sign on his iGate to give your digipeated packets a chance to be heard by
>> an iGate and get forwarded onto the greater APRS network as DIGIPEATS
>> (instead of being discarded as duplicates).
>>
>> -Scott, K4KDR
>>
>> ==========================
>>
>> On Wed, Mar 25, 2020 at 7:30 PM Brian Wilkins KO4AQF via AMSAT-BB <
>> amsat-bb@?????.???> wrote:
>>
>> > I had no issue until it went offline and then came back. I believe one
>> of
>> > the iGates near me may have went offline since the ISS APRS pause as
>> ISS is
>> > confirming my messages however nothing is showing up on ariss.net and I
>> > can
>> > exchange messages with others. I am considering building my own APRS RX
>> > iGate from an RTLSDR and Raspberry Pi just to digipeat my own packers
>> back
>> > to APRS.fi website
>> >
>> > On Wed, Mar 25, 2020 at 7:22 PM John Brier via AMSAT-BB <
>> > amsat-bb@?????.???>
>> > wrote:
>> >
>> > > I got through it on March 21st on a 12 degree pass using a TH-D72 and
>> an
>> > > Arrow:
>> > >
>> > > https://twitter.com/SpaceComms1/status/1241598936814694400?s=19
>> > >
>> > > It was hard, as I believe it is a little deaf or not decoding
>> > consistently
>> > > based on past reports. Some have said it seems to be easier with
>> Kenwood
>> > > radios.
>> > >
>> > > They are sending up a new Kenwood radio system soon that supports
>> > > digipeater ops so don't dismiss this mode entirely!
>> > >
>> > > 73' John Brier KG4AKV
>> > >
>> > > On Wed, Mar 25, 2020, 19:02 Steve Kristoff via AMSAT-BB <
>> > > amsat-bb@?????.???>
>> > > wrote:
>> > >
>> > > >
>> > > > Has anyone been able to digipeat APRS through the ISS with a 5
>> watt HT
>> > > > and an Arrow antenna lately? If so, what are your secrets for
>> success?
>> > > > If 5 watts and an Arrow doesn't work please let me know that, too,
>> so I
>> > > > can pursue a different aspect of our hobby.
>> > > > thanks!
>> > > > Steve AI9IN
>> > > > Grid EM79ji
>> > > > Oldenburg IN 47036
>> > > >
>> > > > _______________________________________________
>> >
>> >
>> >
>> _______________________________________________
>> 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
>>
> --
> Brian Wilkins
> KO4AQF
>
--
Brian Wilkins
KO4AQF
------------------------------
Subject: Digest Footer
_______________________________________________
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 member? Join now to support the amateur satellite program!
https://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
End of AMSAT-BB Digest, Vol 15, Issue 96
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