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@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@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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