[amsat-bb] Thoughts on ISS packet switch back to 145.825 MHz(long)

Tue Apr 18 13:32:24 UTC 2017

Everything that has been said in these post's has been going on for 26 
years -- ever
sence MIR had a digi. There has been experiments with MIR with split freq's 
. etc
It ALL comes down to everyone have fun,  have respect for others and enjoy 
the
hobby and if you do not like whats happening, there are other birds up there

Dave
N6CO

----- Original Message ----- 
From: "Scott via AMSAT-BB" <amsat-bb at amsat.org>
To: "Stefan Wagener" <wageners at gmail.com>
Cc: "AMSAT Mailing List" <amsat-bb at amsat.org>
Sent: Monday, April 17, 2017 8:17 PM
Subject: Re: [amsat-bb] Thoughts on ISS packet switch back to 145.825 
MHz(long)

I am really not sure what the heartburn is here now that ISS is back on VHF. 
Nothing is taking place any differently than would have been happening 
before October.  I have digipeated through ISS with my FT1DR to show up on 
the ISS Heard list.  That is obviously what some of the station on the log 
provided were doing as well.    That is totally acceptable.  If you see a 
response from ISS there should be no need to try further.  The key of course 
is to manually transmit and not setup the beacon.  The FT1DR is not 
conducive for easy messaging.  I have done successful messaging with an 
APRSIS32/TNC setup in the past.  I will be trying APRSDroid to do the same 
in the near future.

73.  Scott, KA7FVV
President - KBARA
http://www.ka7fvv.net
Co-Owner 443.525 System Fusion Digital/Analog Repeater, Spokane WA

> On Apr 17, 2017, at 19:51, Stefan Wagener <wageners at gmail.com> wrote:
>
> Thanks Mike,
>
> I appreciate your open, thoughtful and constructive discussion. Since you
> don't even seem to have read the log, and the timestamp stations are
> digipeating, I leave you to your beliefs.
>
> I will stay to the facts and exit this discussion. :-) :-) :-)
>
> 73, Stefan VE4NSA
>
>
>> On Mon, Apr 17, 2017 at 8:22 PM, Mike Diehl <diehl.mike.a at gmail.com> 
>> wrote:
>>
>> Congrats Stefan, you still have no idea what ISS heard, only what it
>> digipeated. Please also prove me wrong that a simplex channel can support
>> more than 50% utilization. The fact only 5% of the pass had the ISS radio
>> transmitting can either prove nothing or support the fact that there is 
>> so
>> much QRM AT THE ISS that very few complete packets were heard and
>> digipeated.
>>
>> As far as black listing goes the FCC has no authority over what data a
>> site decides to exclude from showing. Sorry but you're reading and not
>> comprehending what I stated.
>>
>> 73,
>>
>> Mike Diehl
>> AI6GS
>>
>> On Apr 17, 2017, at 5:30 PM, Stefan Wagener <wageners at gmail.com> wrote:
>>
>> Well Mike,
>>
>> Here is my log from the last pass. It shows 29 digipeats (~75% decoding
>> success at my station) for 8+ minutes. Each packet is barely 1 1/2 
>> seconds!
>> That is a utilization of less then 5% assuming my math is correct.
>>
>> In addition, asking for "blacklisting of licensed operators" is something
>> I certainly will not support and fortunately neither does the FCC.
>>
>> 73, Stefan, VE4NSA
>>
>>
>> ..........................................
>>
>> Fm RS0ISS To CQ <UI pid=F0 Len=36 >[18:46:17] >ARISS - International
>> Space Station
>>
>> Fm KE7ZXE-4 To CQ Via RS0ISS <UI pid=F0 Len=28 >[18:47:17]
>>
>> N7UWX DE KE7ZXE from CN86 me
>>
>> Fm VE6PW To U1PSWQ Via RS0ISS,ARISS <UI pid=F0 Len=32 >[18:47:59] `*Zvl
>> _-/` Hello  via  ISS   _%
>>
>> Fm RS0ISS To CQ <UI pid=F0 Len=36 >[18:48:18] >ARISS - International
>> Space Station
>>
>> Fm W8LR To S9SR2V Via RS0ISS <UI pid=F0 Len=47 >[18:49:51]`p0Kl p[/>CQ:
>> Via ISS de W8LR Middletown Ohio=
>>
>> Fm W8LR To S9SR2V Via RS0ISS <UI pid=F0 Len=47 >[18:50:01]`p0Kl }[/>CQ:
>> Via ISS de W8LR Middletown Ohio=
>>
>> Fm W8LR To S9SR2V Via RS0ISS <UI pid=F0 Len=47 >[18:50:11]`p0Kl j[/>CQ:
>> Via ISS de W8LR Middletown Ohio=
>>
>> Fm KD0KZE To TUPX8Y Via RS0ISS <UI pid=F0 Len=49 >[18:50:17] `yaHl _-/
>> Greetings via ISS from Circle Pines MN
>>
>> Fm RS0ISS To CQ <UI pid=F0 Len=36 >[18:50:18] >ARISS - International
>> Space Station
>>
>> Fm W8LR To S9SR2V Via RS0ISS <UI pid=F0 Len=47 >[18:50:24] `p0Kl O[/>CQ:
>> Via ISS de W8LR Middletown Ohio=
>>
>> Fm KD0KZE To TUPX8Y Via RS0ISS <UI pid=F0 Len=49 >[18:50:28] `yaHl _-/
>> Greetings via ISS from Circle Pines MN
>>
>> Fm W8LR To APK003 Via RS0ISS <UI pid=F0 Len=40 >[18:50:35] :KD0KZE   :599
>> Via ISS de W8LR Jerry{62
>>
>> Fm KD0KZE To TUPX8Y Via RS0ISS <UI pid=F0 Len=49 >[18:50:39] `yaHl _-/
>> Greetings via ISS from Circle Pines MN
>>
>> Fm N7EKY-6 To T6PY2T Via RS0ISS,WIDE2-1 <UI pid=F0 Len=36 >[18:50:49]
>> 'u&Bl _-/]CQ via ARISS,EN56jd,Paul=
>>
>> Fm W8LR To APK003 Via RS0ISS <UI pid=F0 Len=40 >[18:50:55] :KD0KZE   :599
>> Via ISS de W8LR Jerry{62
>>
>> Fm W8LR To APK003 Via RS0ISS <UI pid=F0 Len=40 >[18:50:58] :N7EKY-6  :599
>> Via ISS de W8LR Jerry{63
>>
>> Fm KD0KZE To TUPX8Y Via RS0ISS <UI pid=F0 Len=49 >[18:51:01] `yaHl _-/
>> Greetings via ISS from Circle Pines MN
>>
>> Fm W8LR To S9SR2V Via RS0ISS <UI pid=F0 Len=47 >[18:51:11] `p0Kl w[/>CQ:
>> Via ISS de W8LR Middletown Ohio=
>>
>> Fm W8LR To S9SR2V Via RS0ISS <UI pid=F0 Len=47 >[18:51:21] `p0Kl"F[/>CQ:
>> Via ISS de W8LR Middletown Ohio=
>>
>> Fm W8LR To S9SR2U Via RS0ISS <UI pid=F0 Len=47 >[18:51:38] `p0Kl!%[/>CQ:
>> Via ISS de W8LR Middletown Ohio=
>>
>> Fm KD0KZE To TUPX8Y Via RS0ISS <UI pid=F0 Len=49 >[18:52:07] `yaHl _-/
>> Greetings via ISS from Circle Pines MN
>>
>> Fm W8LR To APK003 Via RS0ISS <UI pid=F0 Len=40 >[18:52:10] :KD0KZE   :599
>> Via ISS de W8LR Jerry{62
>>
>> Fm W0BSH-3 To S8SW6R Via RS0ISS <UI pid=F0 Len=16 >[18:52:10] `v06l
>> _>/]"5v}=
>>
>> Fm N7EKY-6 To T6PY2T Via RS0ISS,WIDE2-1 <UI pid=F0 Len=36 >[18:52:16]
>> 'u&Bl _-/]CQ via ARISS,EN56jd,Paul=
>>
>> Fm W8LR To APK003 Via RS0ISS <UI pid=F0 Len=40 >[18:52:27] :N7EKY-6  :599
>> Via ISS de W8LR Jerry{63
>>
>> Fm W8LR To APK003 Via RS0ISS <UI pid=F0 Len=40 >[18:52:30] :N7EKY-6  :599
>> Via ISS de W8LR Jerry{64
>>
>> Fm W8LR To APK003 Via TS0ISS <UI pid=F0 Len=40 >[18:53:13] :N7EKY-6# :599
>> Via QSS de W8LR Jerry{07
>>
>> Fm W8LR To APK003 Via RS0ISS <UI pid=F0 Len=40 >[18:53:15] :W0BSH-3  :599
>> Via ISS de W8LR Jerry{65
>>
>>
>>
>> On Mon, Apr 17, 2017 at 4:51 PM, Mike Diehl <diehl.mike.a at gmail.com>
>> wrote:
>>
>>> Greg,
>>>
>>> You make a good point about the complications of dropped packets. I have
>>> some good recordings of voice stations getting a call back when as 
>>> little
>>> as a single letter of their call was heard. It's amazing how well we can
>>> learn the voices of other ops when you're on regularly. This simply 
>>> doesn't
>>> happen on packet.
>>>
>>> Another complication is that it is on simplex. That means on a 10 minute
>>> pass the maximum amount of time possible to digipeat is 5 minutes if the
>>> channel is fully saturated. Subtract out the ISS beacons we end up with
>>> less than 50% of the pass available for ISS to hear you.
>>>
>>> I'm not sure what the best solution is. You do bring up an interesting
>>> point about APRS-IS. Maybe it's possible to have them black list fixed
>>> beacon stations and remove the vanity aspect like you mentioned.
>>>
>>> 73,
>>>
>>> Mike Diehl
>>> AI6GS
>>>
>>>> On Apr 17, 2017, at 1:26 PM, Greg D <ko6th.greg at gmail.com> wrote:
>>>>
>>>> Gabriel Zeifman wrote:
>>>>> It's not complicated. However much it may be insisted ISS packet is 
>>>>> not
>>>>> SO-50, it is practically the same thing (single channel operating on
>>> FM).
>>>> Actually, the ISS digi is worse.
>>>>
>>>> With voice communication, one can sometimes pick up the start or tail 
>>>> of
>>>> a call sign, as the astronaut demonstrated, and use that to filter a
>>>> second try.  With digital, any bits that get corrupted result in no
>>>> reception at all.
>>>>
>>>> I hate to suggest this, and admit I am assuming a cause without
>>>> supporting evidence, but it might be necessary to remove the "vanity"
>>>> aspect of ISS digipeating, and take down or hide from general view the
>>>> reporting sites that support it.  While a useful tool for
>>>> troubleshooting, I suspect the vanity aspect of seeing your call in a
>>>> public list day after day from an unattended station may be too strong 
>>>> a
>>>> draw for some, resulting in the clogged channel.  The SatGates that
>>>> monitor for ISS and other APRS satellite traffic are still important
>>>> part of the infrastructure, so that the information can be datamined
>>>> from APRS-IS if you need it for troubleshooting.  But the consolidated
>>>> lists of who has been seen digipeating through the ISS, I think, may be
>>>> contributing more trouble than they are worth.
>>>>
>>>> Greg  KO6TH
>>>>
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>>
>>
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> AMSAT-NA.
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_______________________________________________
Sent via AMSAT-BB at amsat.org. AMSAT-NA makes this open forum available
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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 