[aprssig] Re: Unreasonable xmission delay
BH
brent.hildebrand at gmail.com
Sun Jul 16 00:04:31 EDT 2006
I did a little analysis of APRS traffic this afternoon looking only at
packets with $GPRMC sentences. Today's analysis looked at all $GPRMC
sentences that I decoded vs the time that the packets were received.
GPRMC includes the timestamp from the GPS, and my computer time is
synced with an Internet time server. Here is the the data showing the
callsign of the IGate, and the time delay for each individual packet
rounded to the nearest second. There are some marked outliers which
on further analysis showed was often do to corrupted packets, see the
large numbers in the first station listed below. This IGate also
shows marked delay in time, but then appears to improve with time. I
understand that complete analysis would require looking at all the
path data also. The idea here is to see where problems points may be
located.
N3XKU 304 302 281 272 315 365 326 285 267 274 209 251 255 265 296
331 5 67 74 78 5 3 3 4 4 33928 5 33990 5 34110 5 5 34230
KE2LJ-8 4 11 9 3 3 10 4 2 10 37 5 19 19 3 7 16 10 54 13 6 6 5 2 5 4
4 25 12 80 21 6 11 2 11 24 16 56 3 5 18 17 5 8 24 21 7 101 42 26 163
118 58 20 60 56 9 3 5 4 4
W2KB 4 25 2 3 6 21 4 6
N2ZRC 12 8 4 9 17 162 91 15 1 1 4 1 2 2 2 3
N2VFK 52 4
VE7GDH 1 2 2 1 1 1 1 1 1 1 1 1 1 1 2 1 2 1 1 1 1 2 1 2 1 1 1 3 2 1 1
1 1 1 1 1 1 1 1 1 1 1 1 1 4 1 1 4 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1 1 1 1 3 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 1 1 1 1 1 2 1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 1 1
1 0 0 1 0 1 1 2 2 1 3 1 2 1 2 1 2 1 1 1 1 1 2 2 1 1 1 1 1 1 1 1 1 2 1
1 2 1 1 1 4 3 2 2 2 2 2 2 2 2 2 1 1 1 2 3 3 1 2 1 1 2 3 2 2 1 3 2 1 1
1 1 3 1 3 2 3 2 2 3
KD7NM 249 135 8 1 2 3 1 2 1 3 2 1 2 2 1 2 2 3 1 0 1 0 1 0 1 0 1 0 1
KD7NM* 610 493 141 222 48 85 228 170 54 195 243 195 138 80 196 138
249 191 166 108 167 51 158 100 150 88 118 142 90 121 62 73 70 88
VE7DID-1 2 2 2 2 2 2 3 2 3 2 2 2 1 1 1 1 2 2 2 2 1 1 0 0 0 2 2 2 2 2
1 1 1 1 1 3 2 2 1 1 1 1 2 2 1 1 1 1 2 1 1 1 1 1 1 1 5 1 1 3 1 1 1 1 1
1 1 2 1 1 2 2 1 1 1 2 5 1 2 1 1 1 4 4 3 9 8 8 9 10 9
VE7DIE 3 6 2 2 1 2 1 1 1 1 1 2 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 5 1 1
5 2 1 1 2 1 1 1 1 1 1 4
N7NEI-12 1 2 9
VA7MOS-13 7 3 21 12 6 3 2 2 5 4 6 15
KE7BBS 136
LW4DEM-1 3 3 4 3 3 3 3 3
KD7AN-2 3 3 3 3 2 2 2 2 3 3 2 1 1 1 1 1 2 1 3 2 1 2 1 1 3 1 2 0 2 1
W0EP-1 4 5 5 4 5 4 6 4 5 4 4 4 4 4 4 4 4 4 4 4 4 4 3 3 3 5 3 3 3 3 3
2 4 3 2 5 3 3 2 2 2 2 2 2 2 2 3 3 2 2 4 2 2 2 2 2 2 3 2 2 3 2 2 2 2 2
2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 3 2 2 2
2 2 3 2 4 3 2 3 2 6 2 2 2 2 2 2 2 2 2 3 2 2 2 2 3 2 2 2 2 3 3 2 2 2 4
3 3 2 3 2 2 2 2 2 2 4 2 3 2 2 2 2 2 2 2 2 2 2 2 2 2 3 2 4 2 2 2 2 2 2
2 2 2 2 2 2 2 5 3 2 2 2 2 2 2 2 1 2 2 2 2 2 2 1 1 4 1 1 3 1 1 2 2 2 2
1 2 1 2
KC0LNO-1 5 5 4 2 2 1 1 1
N7XUC-2 5 7 4 4 4 4 5 4 5 6 5 4 5 6 6 4 5 4 4 5 5 5 5 4 5 4 4 5 4 4
4 6 4 4 4 4 4 4 5 4 4 5 4 4 4 4 5 5 4 5 4 4 4 4 3 5 5 3 5 5 3 3 4 4 3
4 3 4 5 3 3 3 4 4 3 3 4 3 3 3 3 3 3 3 3 3 4 3 3 3 4 3 3 3 3 3
N0PSJ 4 4 4 4 4 4 4 4 4 4 5 5 4 4 4 5 5 3 3 4 3 3 3 6 4 2 1 1 2 1 1 2
K0ANI 4 3 4 4 3
WB5BBW 4 2 420
K5COD 719 406 357
WB5AOH 3 4
W0WTN-10 1 1 1 1 1 0 0 0 0 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1 4 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1 2 1 1 3 1 1 1 1 1 1 1 1 1 1 0 1 1 1 3 1 1 0 0 0 0 0 0 0 0 0 0 0 0 2
0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0
0 0 0 0 0 2 0 0 0 0 0 0 0 1 0 0 1 0 1 2 0 0 0 2 0 0 0 0 1 0 86399
86399 2 86399
VE2ETS 4 3 3 3 3 3 3 3 3 3 3 3 3 3 3 4 3 3 3 3 3 3 3 3 3 3 3 3 3 3 4
3 3 3 3 3 3 3 3 3 3 3 5 5 3 3 3 3 3 4 6 3 3 3 3 2 3 5 3 6 3 3 3 5 3 5
3 3 3 6 3 2 3 3 3 3 3 3 3 2 3 3 4 3 3 2 2 2 4 2 2 4 3 2 3 3 2 2 2 2 4
2 5 2 4 3 2 3 2 4 3 2 3 2 2 3 3 2 2 2 2 2 1 2 4 5
VE2SIL 7 3 4 3 4 3 3 3 3 5 4 3 5 4 2 5 1 1 5
VE2MGJ 3 4 6 4 3 3 2
VA3DXV 5 2
VE3KFK 4 104 2 3 2 4 4 2 3 4 6 5 4 2 2 2 2 119 5 1 5 1 1 1 1 3 3 3 1
3 5 6 3 3 3 4 1 3 4 3 3 3 5 3 2 2 2 2 2 2 4 4 4 3 6 10 3 5 3 4 3 3 3 3
4 4 5 4 4 5 6 3 3 9 3 4 4 1 2 5 4 4 3 3 3 2 1 25 3 3 3 2 2 1 2 2 6 2 2
1 0 0 4 3 76 2 0 1 1 0 1 74 0 0 2 12 2 2 3 0 1 1 1 1 1 2 4 2 1 2 3
N2NJH-3 3 2 3 3 3 3 2
VA3UV 1 2 2 2 2
KB2ZE-2 4 6 5 5 4
KC2HTV 2 4
KC2YU-1 4
K3JSE 3 2 5 4 2 2 4 2
N2AYK 5 33699 42 34146 2 4
WH6KO 4
TA1DF-2 4 4 4 7 4 4 6 4 7 9 5 4 4 2 4 3 2 7 2 2 2 2 7 2 2 2 2 4 4 2
2 2 2 5 2 2 7 2 4 2 2 2 6 2 2 2 2 2 6 3 3 1
KB6JAG 1 3 1 2 6 4 6 6 6 7 6 2 2 1
KC6JTN 2 3 1 2 1 1 1 2 5 6 6 5 5 7 6 4 6 6 4 4 2 2 2 2 1 1 2 2 2 2 2
2 1 1 1 3 1 1 1 3 1 1 1 2 1 2 1
KC6YRU 2 2 4 1 1 2 1 1 2 2 2 2 2 2 1 2 2 1 2 2 1 3
KD5MSS 2
KB7ZVA-1 3 3 3 6 8 7 6 3 3 3
W9IF 3 5 7 13 6 5 7 6 3 6 3 4 4 5 4 1 3 2 2 6 2 4 4 1 4 3 14 9 16 6
13 12 12 7 8
N1VG-1 3
KG6HSQ-2 2 2 4 2 4 2 8 5 1 3
W9IF-7 2 3 2
AB0XK-8 8 5 7 6 6 6 6 6 6 6 6 4 6
K0SUN-14 2 3 3 4
ZL1VFO-10 4 4 3 4 3 6 4 4 4 3 4 3 6 4 3 3 6 5 3 4 4 3 3 6 6 6 7 3 4
3 3 6 3 3 4 4 4 6 6 5 8 4 4 5 3 5 4 7 6 4 4 4 6 4 4 2 4 3 3 3 6 4 7 4
3
ZL1VFO 2 2 2 2 2 2 3 2 4 2 2 2 38 2 2 2 2 2 3 2 2 2 2 2 2 2 3 5 3 3
25 3 2 2 2 2 2 16 4 2 2 2 4 2 3 4 4 2 2 2 2 4 3 1 4 2 2 2 3 3 2 4 1 2
2 1 2 4 3 4 4 4 3 3 4 3 3 3 4 3 6 3 3 4 3 2 4 4 2 2 2 2 4 3 3 3 1 2 3
2 3 4 1 2 2 2 3 1 2 2 3 3
KB7KFC-1 4 3 3 3 2 3 4 4 3 2 3 3 4 2 3 3 3 8 3 3 2 4 2 2 3 3 6 4 7 4
7 5 5 4 4 4 4 1 1 1 1 1 1 1 1 1 1 1 2 4 3 3 4
KV4OA 7 1714 4 0 0 1 1 6 1 0 1 2 8 0 1 2 1 6 2 0 0 2 2 2 1 2 3 0 3 2
2 3 3 1 1 4 2 0 6 1 0 2 6 3 1 2 1 5 0 1 1 0 0 0 2 0 5 12 2 4
KB6TWC-1 3
N3IJW 3 2 3 4 3 3 3 3 5 3 3 5 3 3 2 4 4 2 3 2 3 2 3 0 1 0 0 3 0 5 1
0 1 0 0 1 0 1 1 1 2 1 3 1 1 3 1 1 3 1 1 5 1 2 3 2 3 1 2 1 2 3
N4TVC 4
N2NWK 3
K5MJE-2 4 4 5 5 4 4 4 4 4 3 4 2 3 4 3 3 6 2 4 2 4 3 3
N6EX-3 181 94 107 104 87 66 97 76 94 71 95 106 93 104 76 55 97 95
114 80 83 86 110 83 94 78 72 117 116 143 146 140 86 104 89 118 108 96
112 107 114 117 61 119 132 158 109 72 110 74 137 67 88 105 120 95 106
80 90 112 81 68 102 77 80 102 80 129 83 84 33359 90 83 85 119 102 116
100 100 86 80 92 76 83 104 82 57 101 90 96
N7WLC 6 6 6 7 9 6 3 1 4 5 5 4 2 4 8
SEA 2 2 1
WB9WLS 2 2 2 2 2 2 2 2 2 2 2 1 2 2 1 1 1 1 1 1 1 1 1 1 1 2 1 1 1 1 1 0 1 2
N9UOF-1 3 0 0 2
AB9FX 1 1
K9QAM 3 3 5 3 2 4 2 3
W9ADS 19 7 5 6 14 6
WR9A 10 14 7 6 7 10 11 6 5 12 9 7 9 8 6 5 5 8 8 20 6 4 4 5 2 3
KA9SZW 11 6
KB9YVN 9 5
N9GKE 6
VE9APR 2 2 3 0 2 2
VE3IRI 6 3 8 4 3 3 4 3
KA5J 5 3 5 5 5 5 6 155 5 4 4 4 4 5 4 5 4 4 4 4 4 4 4 4 5 6 4 6 4 5 4
4 6 4 4 4 4 4 4 5 5 4 5 3 6 3 5 4 4 5 4 5 4 5 4 4 4 6 3 3 5 4 4 3 4 4
4 5 4 3 4 5 4 4 3 3
VE5BNC-3 3 3 3 3 3 3 3 80840 4 2 2 2 2 ý4266 8 2 2 486 2 2 2 3 ý1605
1 2 2 2 2 2 2
N8XHZ-1 3 1 2
W6LMJ 2 2 2 2 4 2 3 2 2 2 2 2 2 2 3 2 2 2 2 2 3 2 2 0 0 0 0 0 0 0 0
0 8 0 2942 0 2 0 0 0 0 0 1 0 0
KA3NAM-10 3 2 4 3 3 2 2 2
WD4HDT 5 5 5 4 5 7 4 5 4 5 6 6 5 4 4 8 4 5 3 5 5 4 4 4 5 4 5 5 4 5 5
4 5 4 4 7 5 4 5 6 4 4 4 3 3 4 4 6 5 4 5 4 4 3 4 5 3 8 5 5 5 6 4 5 8 4
5 4 4 4 4 4 3 3 3 3
KB5VE-1 7 6 5 4
AA5ED-10 5 4
KE4LTT 4
KC5KLM-1 3
0 0 0 0 0 0
WA4DSY 73 5 4 237 4 4 2 4 91 4 4
WW6JC-3 5 7
KA9RXH 4 6 5 4 3 4
N0PBA-2 5 4 7 6 129 2 3 31
KC0GFO 3
W0DP 4 3 3 4 2
KC0QWN-10 47 38 81 71 184 83
W0IBM 4
W5CCL-2 3 3 3
N0AN 43
KI4GYZ 26
K0AEM-1 1
N4BSA 2 2 2 2 3 3 2 2 2 2 2 2 2 2 2 2 3 3 2 3 2 4 4 2 2 2 2 2 2 2 3
2 2 2 2 2 2 2 2 2 1 0 0 0 1 0 0 3 3 0 0 1 2 0 0 1 2 0 0 0 0 1 2 0 0
KG4YZY-11 33 17 16 11 8 31 34 14 38 11 13 21 10 19 12 39 31 37 18 38
39 45 24 56 24 15 15 18 23 33 13 9 14 21 8
KB4SYV 3 5 4 6 5 2 4 4 3 5 3 4 4 3 3 6 4 4 4 5 4 3 4 4 4 4 4 3 4 4 4
3 3 4 4 3 4 3 3 4 4 5 4 4 2 1 1 2 2 1 2 2 3 2 2 1 2 1 4 4
WC4PEM-2 3 3 3 4 3 4 4 3 3 3 3 4 3 3 3 3 3 3 4 4 3 3 3 4 4 4 3 5 3 3
3 2 2 3 2
KD4LXB 33 37
N8JE 4 3 3 3 1 1 1
AC0AE 11474
VK4ZE 2 1 753
VK4TEC 1
KD7GIZ-10 2 0
KE7BAP-12 1 1
K7UHP 2 1 1
K7UHP-3 3
K8TIH 5 7
KD8ATU-1 4 11 3
N9ZIP 6
KB9IBW 5
KD8CAO 6
KC9HAX 6
NS8E 6
W9MKS-15 5
KC8YVF 4
K2DLB 33031
N4XI-11 6
N0BKB 3
KB9TKF-5 2
KC0MWM 2 9
WB0WNX 4
W9NNS 303
K0HAM-2 1
AK4KO-3 4
VE6DJJ 2 0 1 1 1
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