[aprssig] I don't think I can time travel

[Heikki Hannikainen]

Yep, there is some serious delaying happening over there.

Those packets do not contain timestamps, so whatever GPS/time settings you 
use, aren't affecting the outcome. The timestamps are just the times when 
the packets arrived at aprs.fi. If you can enable timestamping in your 
APRS transmitter, aprs.fi can then weed out the delayed packets more 
effectively based on that, and has a better chance of not ignoring 
correctly ordered packets. In the raw packets view, you can switch to 
Decoded mode to see what the packets contain.

With visual inspection you can find some of the delayed packets easily:

2020-08-02 15:04:45 CDT: 
NE3R-8>S9PS5V,KV3B-1,WIDE1*,WIDE2-2,qAR,W4VA-10:`j_m!>|j/]"6%}146.520MHz Toff=
2020-08-02 15:11:27 CDT: 
NE3R-8>S9PS5V,KV3B-1*,WIDE1*,K3HKI-1*,WIDE2-1,qAR,KX4ZG-1:`j_m!>|j/]"6%}146.520MHz Toff=

2020-08-02 15:12:20 CDT: NE3R-8>S9PU8T,WIDE1-1,WIDE2-2,qAR,W4VA-10:`j[# 4\j/]"5h}146.520MHz Toff=
2020-08-02 15:18:17 CDT: 
NE3R-8>S9PU8T,W4VA-10*,K3HKI-1*,WIDE2-1,qAR,KX4ZG-1:`j[# 4\j/]"5h}146.520MHz Toff=

2020-08-02 15:16:32 CDT: 
NE3R-8>S9PW7V,KV3B-1,WIDE1*,WIDE2-2,qAR,W4VA-10:`iWg!*1j/]"5n}146.520MHz Toff=
2020-08-02 15:21:55 CDT: 
NE3R-8>S9PW7V,KV3B-1*,WIDE1*,K3HKI-1*,WIDE2-1,qAR,KX4ZG-1:`iWg!*1j/]"5n}146.520MHz Toff=

2020-08-02 14:46:29 CDT: 
NE3R-8>S9PP7R,KV3B-1,WIDE1*,WIDE2-2,qAR,W4VA-10:`j1mo|<0x1f>j/]"6=}146.520MHz Toff=
2020-08-02 16:01:27 CDT: 
NE3R-8>S9PP7R,K4MRA-4,KJ4RPW-3*,WIDE2,qAR,W4KEL-12:`j1mo|<0x1f>j/]"6=}146.520MHz Toff=



On Sun, 2 Aug 2020, Joseph M. Durnal wrote:

> aprs.fi is showing a strange track for me today.  
> 
> https://aprs.fi/#!mt=roadmap&z=15&call=a%2FNE3R-8&timerange=86400&tail=86400
> if you are looking at this later, you might have to adjust the time range.  Not sure what happened to my track on
> US 48 in WV.  I let the GPS set the time on my rig, maybe it had a hiccup?  Any ideas?  
> 
> At least it was nice to see a few packets digipated from that area.
> 
> here is what aprs.fi has in the raw packets, i think there are some slow reporters in there as there is no way
> K4MRA heard me direct at 16:07 CDT.  
> 
> 2020-08-02 11:41:30 CDT: NE3R-8>S9PT6P,WIDE1-1,WIDE2-2,qAR,K8VE-8:`lX1n@'j/]":\}146.520MHz Toff=
> 2020-08-02 13:15:01 CDT: NE3R-8>S9PX8R,N3KTX-5,N3IVK-11,WIDE1*,WIDE2-2,qAR,N3IVK-15:`k>G 4?j/]"?m}146.520MHz Toff=
> 2020-08-02 13:35:38 CDT: NE3R-8>S9QQ6Y,N3IVK-11,WIDE1*,WIDE2-2,qAR,N3IVK-15:`k-c">{j/]"?`}146.520MHz Toff=
> 2020-08-02 13:37:57 CDT: NE3R-8>S9QR8Q,N4DSL-3,WIDE1*,WIDE2-2,qAR,KD8AZC:`k+""Hrj/]">y}146.520MHz Toff=
> 2020-08-02 13:39:57 CDT: NE3R-8>S9QR9S,N4DSL-3,WIDE1*,WIDE2-2,qAR,KD8AZC:`k(B">lj/]"=a}146.520MHz Toff=
> 2020-08-02 13:46:00 CDT: NE3R-8>S9QP5W,K7SOB-13,WIDE1,N4DSL-3*,WIDE2-1,qAR,KD8AZC:`ka_"6<0x1f>j/]":$}146.520MHz
> Toff=
> 2020-08-02 13:51:59 CDT: NE3R-8>S9PX2T,K7SOB-13*,WIDE1*,WIDE2-2,qAR,K3DO-11:`k[V"5Uj/]"8D}146.520MHz Toff=
> 2020-08-02 13:53:58 CDT: NE3R-8>S9PW9T,WIDE1-1,WIDE2-2,qAR,KD8AZC:`kY>">Nj/]":%}146.520MHz Toff=
> 2020-08-02 13:56:00 CDT: NE3R-8>S9PX6X,WIDE1-1,WIDE2-2,qAR,KD8AZC:`jV{"IBj/]"7E}146.520MHz Toff=
> 2020-08-02 14:04:01 CDT: NE3R-8>S9PU3P,WIDE1-1,WIDE2-2,qAR,KD8AZC:`jQF">Wj/]"9S}146.520MHz Toff=
> 2020-08-02 14:06:00 CDT: NE3R-8>S9PV1P,WIDE1-1,WIDE2-2,qAR,KD8AZC:`jO "4Rj/]":_}146.520MHz Toff=
> 2020-08-02 14:10:03 CDT: NE3R-8>S9PS9S,WIDE1-1,WIDE2-2,qAR,KD8AZC:`jK_"?9j/]"9R}146.520MHz Toff=
> 2020-08-02 14:27:50 CDT: NE3R-8>S9PT9S,K7SOB-13,WIDE1*,WIDE2-2,qAR,KD8AZC:`j;Bm vj/]"9V}146.520MHz Toff=
> 2020-08-02 14:29:50 CDT: NE3R-8>S9PU1S,N3IVK-11,WIDE1*,WIDE2-2,qAR,N3IVK-15:`j:lm4~j/]":C}146.520MHz Toff=
> 2020-08-02 14:43:03 CDT: NE3R-8>S9QR9S,N4DSL-3,WIDE1*,WIDE2-2,qAR,W4KEL-12:`k(B">lj/]"=a}146.520MHz Toff=
> 2020-08-02 14:46:29 CDT: NE3R-8>S9PP7R,KV3B-1,WIDE1*,WIDE2-2,qAR,W4VA-10:`j1mo|<0x1f>j/]"6=}146.520MHz Toff=
> [Location changes too fast (adaptive limit)]
> 2020-08-02 14:52:32 CDT: NE3R-8>S9PQ9R,K4MRA-4*,WIDE2-2,qAR,KD8AZC:`j+u" Fj/]"65}146.520MHz Toff=
> 2020-08-02 14:53:28 CDT: NE3R-8>S9PP7R,KV3B-1*,WIDE1*,K3HKI-1*,WIDE2-1,qAR,KX4ZG-1:`j1mo|<0x1f>j/]"6=}146.520MHz
> Toff= [Location changes too fast (adaptive limit)]
> 2020-08-02 15:04:45 CDT: NE3R-8>S9PS5V,KV3B-1,WIDE1*,WIDE2-2,qAR,W4VA-10:`j_m!>|j/]"6%}146.520MHz Toff=
> 2020-08-02 15:11:27 CDT: NE3R-8>S9PS5V,KV3B-1*,WIDE1*,K3HKI-1*,WIDE2-1,qAR,KX4ZG-1:`j_m!>|j/]"6%}146.520MHz Toff=
> 2020-08-02 15:12:20 CDT: NE3R-8>S9PU8T,WIDE1-1,WIDE2-2,qAR,W4VA-10:`j[# 4\j/]"5h}146.520MHz Toff= [Location changes
> too fast (adaptive limit)]
> 2020-08-02 15:16:32 CDT: NE3R-8>S9PW7V,KV3B-1,WIDE1*,WIDE2-2,qAR,W4VA-10:`iWg!*1j/]"5n}146.520MHz Toff=
> 2020-08-02 15:18:17 CDT: NE3R-8>S9PU8T,W4VA-10*,K3HKI-1*,WIDE2-1,qAR,KX4ZG-1:`j[# 4\j/]"5h}146.520MHz Toff=
> 2020-08-02 15:21:55 CDT: NE3R-8>S9PW7V,KV3B-1*,WIDE1*,K3HKI-1*,WIDE2-1,qAR,KX4ZG-1:`iWg!*1j/]"5n}146.520MHz Toff=
> [Duplicate position packet]
> 2020-08-02 15:52:46 CDT: NE3R-8>S9RP2U,WIDE1-1,WIDE2-2,qAR,K3DO-11:`iBZ"HOj/]"5Y}146.520MHz Toff=
> 2020-08-02 15:54:49 CDT: NE3R-8>S9RQ2T,WIDE1-1,WIDE2-2,qAR,K3DO-11:`i@$#*hj/]"5Z}146.520MHz Toff=
> 2020-08-02 15:55:11 CDT: NE3R-8>S9RQ3V,WIDE1-1,WIDE2-2,qAR,K3DO-11:`i?F"zhj/]"5R}146.520MHz Toff=
> 2020-08-02 15:57:13 CDT: NE3R-8>S9RQ4Y,W5ODJ-5*,WIDE1*,WIDE2-2,qAR,W5ODJ-11:`i<Z# pj/]"5a}146.520MHz Toff=
> 2020-08-02 15:59:12 CDT: NE3R-8>S9RR1U,WIDE1-1,WIDE2-2,qAR,KC3BHK-1:`i9p"pQj/]"5p}146.520MHz Toff=
> 2020-08-02 16:00:26 CDT: NE3R-8>S9RR5W,WIDE1-1,WIDE2-2,qAR,K3DO-11:`i8MmRej/]"5:}146.520MHz Toff=
> 2020-08-02 16:01:27 CDT: NE3R-8>S9PP7R,K4MRA-4,KJ4RPW-3*,WIDE2,qAR,W4KEL-12:`j1mo|<0x1f>j/]"6=}146.520MHz Toff=
> [Location changes too fast (adaptive limit)]
> 2020-08-02 16:02:27 CDT: NE3R-8>S9RR3U,WIDE1-1,WIDE2-2,qAR,KC3BHK-1:`i7Po{<j/]"5/}146.520MHz Toff= [Location
> changes too fast (adaptive limit)]
> 2020-08-02 16:04:27 CDT: NE3R-8>S9RQ9P,WIDE1-1,WIDE2-2,qAR,KC3BHK-1:`i6:n4zj/]"4x}146.520MHz Toff=
> 2020-08-02 16:04:36 CDT: NE3R-8>APK102,WIDE1-1,WIDE2-2,qAR,KC3BHK-1::KO4AEJ-9 :tan taco?{36
> 2020-08-02 16:05:37 CDT: NE3R-8>APK102,WIDE1-1,WIDE2-2,qAR,KC3BHK-1::KO4AEJ-9 :tan taco?{36
> 2020-08-02 16:06:26 CDT: NE3R-8>S9RR1X,WIDE1-1,WIDE2-2,qAR,KC3BHK-1:`i5~n_ at j/]"4k}146.520MHz Toff=
> 2020-08-02 16:06:33 CDT: NE3R-8>APK102,WIDE1-1,WIDE2-2,qAR,KC3BHK-1::KO4AEJ-9 :tan taco?{36
> 2020-08-02 16:07:08 CDT: NE3R-8>APK102,WIDE1-1,WIDE2-2,qAR,KC3BHK-1::KO4AEJ-9 :tan taco?{36
> 2020-08-02 16:07:19 CDT: NE3R-8>S9PQ9R,K4MRA-4,N4DSL-3*,WIDE2-1,qAR,W4KEL-12:`j+u" Fj/]"65}146.520MHz Toff=
> [Location changes too fast (adaptive limit)]
> 
> Thanks & 73 de Joe NE3R
> 
>

   - Hessu