Station info - map view · info · telemetry · weather · raw · status · beacons · messages · bulletins · browse · moving · my account
Callsign, ship name or locator: Clear       
It is possible to search using wildcards (*?) after a prefix. Example: OH*
APRS station BY4SZ-10 - show graphs
Comment: SuZhou BY4SZ APRS iGate 144.640Mhz 13.5V
Location: 31°14.44' N 120°34.45' E - locator PM01GF87VS - show map
4.1 miles South bearing 172° from Shishan, Jiangsu Sheng, China [?]
5.3 miles South bearing 163° from Fengqiao, Jiangsu Sheng, China
52.2 miles West bearing 272° from Shanghai, Shanghai Shi, China
69.8 miles North bearing 20° from Hangzhou, Zhejiang Sheng, China
Last position: 2024-12-26 05:53:47 EST (13s ago)
2024-12-26 18:53:47 CST local time at Shishan, China [?]
Device: Telemetry devices
Last path: BY4SZ-10>APET51 via WIDE1-1,WIDE2-1,qAO,BH4GMY-10 (good)
Positions stored: 11
Packet rate: 267 seconds between packets on average during 13074 seconds.
APRS digipeater – Statistics for 2024-12:
Stations heard directly: 42 on radio path – show map
Last heard a station directly: 2024-12-26 05:52:59 EST (1m1s ago)
Normal receiver range estimate: 75 miles (Updated: 2024-12-26 04:03:54 EST)
Position packets heard directly: 7794 on radio path
Stations near current position of BY4SZ-10 - show more
callsign distance last heard - EST      callsign distance last heard - EST
BG7CAN-R1.2 miles 43°2024-12-18 01:23:21 ABCDEF-R1.2 miles 43°2024-12-20 08:52:18
BI4RSI-81.6 miles 106°2024-12-24 06:44:51 BD4WLT1.9 miles 34°2024-12-09 19:29:27
BD4VQH-92.0 miles 327°2024-12-26 05:52:10 BD4TZY-12.5 miles 196°2024-12-25 20:09:27
BD4WMA-D2.7 miles 95°2024-12-06 07:51:37 BA4QHW-103.0 miles 259°2024-12-25 23:41:52
BD4WMA-73.1 miles 205°2024-12-22 20:03:48 BD4WMA-33.5 miles 66°2024-12-19 05:06:21
BD4WMA-13.5 miles 66°2024-12-26 05:32:22 BD4WMA-103.5 miles 66°2024-12-26 05:26:58
BD4UJU-93.5 miles 28°2024-12-18 10:53:22 BH4SRC-N3.6 miles 31°2024-12-13 19:05:03
BH4SRC B3.6 miles 31°2024-12-13 21:55:44 BH4SRC-B3.6 miles 31°2024-12-13 21:55:54
BD4WMC-93.8 miles 303°2024-12-14 20:42:00 BI4TSH-94.0 miles 278°2024-12-26 05:52:59
BI4TSH-84.0 miles 278°2024-12-12 09:34:13 BG5DPA-74.2 miles 97°2024-12-26 03:12:04
Stations which heard BY4SZ-10 directly on radio –
callsign pkts first heard - EST last heard longest (tx => rx) longest at - EST
BH4URE-10 37 2024-12-02 10:26:40 2024-12-20 15:25:19 PM01GF > PM02GJ 79.6 miles 359° 2024-12-20 15:25:19
BI4VTX-3 117 2024-12-02 11:40:43 2024-12-03 00:20:42 PM01GF > PM02NB 64.8 miles 28° 2024-12-03 00:20:42
BG4GTL-10 77 2024-11-30 19:07:31 2024-12-20 16:20:08 PM01GF > PM01RI 54.9 miles 80° 2024-12-20 16:20:08
BI4TSH-9 6 2024-12-05 20:46:36 2024-12-08 01:31:37 PM01GF > PM01GF 4.0 miles 278° 2024-12-08 01:31:37
BG4XTW-10 1 2024-12-02 11:12:54 2024-12-02 11:12:54 PM01GF > OM92VF 83.0 miles 327° 2024-12-02 11:12:54
BH5HQJ-8 10 2024-12-12 23:18:34 2024-12-17 17:31:00 PM01GF > PM00AH 70.4 miles 206° 2024-12-17 17:31:00
BD4SDX-10 10 2024-12-05 03:08:11 2024-12-24 06:41:50 PM01GF > PM00HV 23.7 miles 168° 2024-12-24 06:41:50
bi4rsi-4 42 2024-12-11 18:25:34 2024-12-26 01:34:15 PM01GF > PM01GD 5.6 miles 177° 2024-12-26 01:34:15
BD4RGM-3 202 2024-12-02 10:21:57 2024-12-24 09:51:50 PM01GF > PM02KA 56.2 miles 16° 2024-12-24 09:51:50
BD4RVC-3 1 2024-12-17 07:55:01 2024-12-17 07:55:01 PM01GF > PM02MA 60.8 miles 25° 2024-12-17 07:55:01
BH4FEN-10 6495 2024-11-30 19:02:51 2024-12-26 05:49:09 PM01GF > PM01QD 49.6 miles 98° 2024-12-26 05:49:09
BI4SSB-10 115 2024-11-30 19:35:18 2024-12-25 17:32:04 PM01GF > PM01DV 48.7 miles 342° 2024-12-25 17:32:04
BD4TSK-10 5 2024-12-02 18:23:57 2024-12-17 03:21:37 PM01GF > PM01FT 41.0 miles 349° 2024-12-17 03:21:37
BD4WNX-3 20 2024-12-10 13:13:39 2024-12-25 02:09:40 PM01GF > PM02KB 58.9 miles 16° 2024-12-25 02:09:40
BH4DSC-10 102 2024-12-01 18:27:10 2024-12-26 01:20:18 PM01GF > PM01QH 47.9 miles 85° 2024-12-26 01:20:18
BG5BQB-10 6 2024-12-02 12:40:56 2024-12-16 18:05:14 PM01GF > PM00EH 65.1 miles 192° 2024-12-16 18:05:14
BH4FHE-10 55 2024-12-03 17:11:34 2024-12-25 18:15:15 PM01GF > PM01RF 53.9 miles 91° 2024-12-25 18:15:15
BY4SA-10 944 2024-12-01 00:59:39 2024-12-26 04:34:57 PM01GF > PM01LI 23.4 miles 73° 2024-12-26 04:34:57
BH4HLI-10 5 2024-12-01 18:17:54 2024-12-09 02:28:25 PM01GF > PM01TA 61.9 miles 103° 2024-12-09 02:28:25
BD4WMC-9 1 2024-12-06 20:32:39 2024-12-06 20:32:39 PM01GF > PM01GG 3.8 miles 303° 2024-12-06 20:32:39
BH4GZK-10 17 2024-12-02 11:22:10 2024-12-24 16:44:14 PM01GF > PM01QD 48.6 miles 99° 2024-12-24 16:44:14
BH4HGH-10 1 2024-11-30 21:45:02 2024-11-30 21:45:02 PM01GF > PM00RW 58.4 miles 111° 2024-11-30 21:45:02
BG5BMJ-11 6 2024-12-01 20:32:18 2024-12-20 20:11:53 PM01GF > PM00LU 34.7 miles 143° 2024-12-20 20:11:53
BG4KAT-10 36 2024-12-08 22:45:55 2024-12-12 23:33:50 PM01GF > PM01UE 66.1 miles 94° 2024-12-12 21:40:51
BH4GMY-10 15 2024-12-18 05:04:55 2024-12-26 05:53:47 PM01GF > PM01NR 45.1 miles 42° 2024-12-23 06:49:42

Only position packets which were originated by the station are shown here. The range statistics show some extra long hops, because some digipeaters do not correctly add themselves to the digipeater path. Please check the raw packets.
Stations heard directly by BY4SZ-10
callsign pkts first heard - EST last heard longest (rx => tx) longest at - EST
BH4AIU-9 1 2024-12-05 22:02:06 2024-12-05 22:02:06 PM01OF > PM01GF 37.2 miles 92° 2024-12-05 22:02:06
BH4URE-10 59 2024-11-30 20:38:57 2024-12-25 11:46:58 PM02GJ > PM01GF 79.6 miles 359° 2024-12-25 11:46:58
BI4VTX-3 53 2024-11-30 19:35:25 2024-12-25 16:58:24 PM02NB > PM01GF 64.8 miles 28° 2024-12-25 16:58:24
YAESU 28 2024-12-24 20:38:23 2024-12-25 04:25:33 PM01OG > PM01GF 37.7 miles 89° 2024-12-24 20:38:23
BG4GTL-10 6 2024-12-02 09:17:56 2024-12-16 01:30:47 PM01RI > PM01GF 54.9 miles 80° 2024-12-16 01:30:47
BI4RGI-7 1 2024-12-20 22:04:14 2024-12-20 22:04:14 PM01JF > PM01GF 11.7 miles 89° 2024-12-20 22:04:14
BH4WCW-8 12 2024-12-01 23:05:52 2024-12-20 10:31:09 OM92UB > PM01GF 78.4 miles 318° 2024-12-20 10:31:09
BI4TSH-9 5063 2024-12-01 11:12:17 2024-12-26 05:52:59 PM01GF > PM01GF 4.0 miles 278° 2024-12-26 05:52:59
BH5EJL-9 1 2024-12-14 22:24:52 2024-12-14 22:24:52 PM00LU > PM01GF 35.7 miles 141° 2024-12-14 22:24:52
BI4RSI-8 13 2024-12-11 05:13:39 2024-12-24 05:56:37 PM01HF > PM01GF 1.6 miles 106° 2024-12-24 05:56:37
BD4SDX-10 393 2024-12-02 05:31:22 2024-12-26 05:46:47 PM00HV > PM01GF 23.7 miles 168° 2024-12-26 05:46:47
BG5HNP-10 13 2024-12-24 16:26:31 2024-12-25 18:56:39 PM00BE > PM01GF 76.8 miles 199° 2024-12-25 18:56:39
BH4WTA-9 5 2024-12-16 18:57:00 2024-12-20 03:43:03 PM01HH > PM01GF 7.4 miles 41° 2024-12-16 18:57:00
BH4FJN-9 8 2024-12-02 18:32:31 2024-12-03 03:27:54 PM01RG > PM01GF 54.0 miles 88° 2024-12-03 03:27:54
BD4RGM-3 14 2024-12-11 13:25:01 2024-12-21 22:55:36 PM02KA > PM01GF 56.2 miles 16° 2024-12-21 22:55:36
BD4VFG-9 40 2024-12-02 20:25:28 2024-12-23 20:34:25 PM01LX > PM01GF 55.8 miles 23° 2024-12-19 19:25:01
BD4RVC-3 103 2024-12-12 08:49:37 2024-12-26 02:34:42 PM02MA > PM01GF 60.8 miles 25° 2024-12-26 02:34:42
BH4FLP-9 1 2024-12-19 23:00:52 2024-12-19 23:00:52 PM01LQ > PM01GF 37.0 miles 36° 2024-12-19 23:00:52
BH4ERB-9 1 2024-12-10 15:53:19 2024-12-10 15:53:19 PM01QL > PM01GF 48.8 miles 69° 2024-12-10 15:53:19
BH4FEN-10 76 2024-12-01 15:22:28 2024-12-22 03:27:45 PM01QD > PM01GF 49.6 miles 98° 2024-12-22 03:27:45
BH4BNQ-5 3 2024-12-01 09:00:03 2024-12-07 08:31:07 PM01PI > PM01GF 40.6 miles 80° 2024-12-07 08:31:07
BD4TSK-10 38 2024-12-01 05:30:04 2024-12-16 00:57:04 PM01FT > PM01GF 41.0 miles 349° 2024-12-16 00:57:04
BH4GJK-8 1 2024-12-02 12:44:39 2024-12-02 12:44:39 PM01SG > PM01GF 57.0 miles 88° 2024-12-02 12:44:39
BD4WMA-7 75 2024-12-05 04:22:07 2024-12-22 20:03:16 PM01HG > PM01GF 5.4 miles 55° 2024-12-22 03:17:52
BG4BPN-8 1 2024-12-08 19:35:36 2024-12-08 19:35:36 PM01RQ > PM01GF 61.2 miles 60° 2024-12-08 19:35:36
BH4FHE-10 6 2024-11-30 22:08:05 2024-12-23 21:37:00 PM01RF > PM01GF 53.9 miles 91° 2024-12-23 21:37:00
BH4GXF-7 13 2024-12-22 01:38:35 2024-12-22 02:08:07 PM01PG > PM01GF 44.1 miles 85° 2024-12-22 02:08:07
BD4TZY-1 399 2024-12-01 03:11:44 2024-12-25 20:09:27 PM01KG > PM01GF 17.0 miles 86° 2024-12-15 00:43:42
BA4RAC-9 38 2024-12-03 01:43:36 2024-12-21 20:28:35 PM02KA > PM01GF 55.4 miles 18° 2024-12-03 21:40:28
BH4SDO-9 4 2024-12-11 19:32:49 2024-12-11 19:36:14 PM01GH > PM01GF 4.6 miles 328° 2024-12-11 19:36:14
BD4SPA-7 6 2024-12-12 04:18:41 2024-12-13 03:45:27 PM01HD > PM01GF 8.5 miles 153° 2024-12-12 04:28:41
BG4SOM-15 34 2024-12-11 02:11:15 2024-12-11 04:01:13 PM01JP > PM01GF 30.6 miles 22° 2024-12-11 04:01:13
BH4HLI-10 1 2024-12-01 22:26:27 2024-12-01 22:26:27 OM10XA > PM01GF 987.6 miles 269° 2024-12-01 22:26:27
BD4WMC-9 290 2024-12-06 20:27:12 2024-12-14 20:42:00 PM01GH > PM01GF 4.5 miles 339° 2024-12-14 01:15:59
BA4QVC 53 2024-11-30 22:01:43 2024-12-23 07:43:04 PM01FU > PM01GF 43.8 miles 353° 2024-12-23 07:43:04
BH4HGH-9 1 2024-12-07 04:51:00 2024-12-07 04:51:00 PM01QF > PM01GF 47.5 miles 89° 2024-12-07 04:51:00
BH4FJW-10 40 2024-12-02 10:58:02 2024-12-02 19:48:29 PM01WM > PM01GF 77.3 miles 74° 2024-12-02 19:48:29
BA4RUY-9 880 2024-11-30 19:30:22 2024-12-26 05:39:59 PM01PD > PM01GF 42.4 miles 98° 2024-11-30 20:23:02
BG4KAT-10 3 2024-12-12 15:01:16 2024-12-16 00:59:18 PM01UE > PM01GF 66.1 miles 94° 2024-12-12 15:01:16
BD4ULA-9 13 2024-12-06 23:07:10 2024-12-25 19:11:14 PM01JI > PM01GF 16.3 miles 58° 2024-12-25 19:11:14
BA4QZJ-7 1 2024-12-07 22:20:41 2024-12-07 22:20:41 PM01IQ > PM01GF 30.7 miles 13° 2024-12-07 22:20:41
BA4QHF 3 2024-12-23 19:39:33 2024-12-25 19:22:39 PM01JH > PM01GF 12.2 miles 60° 2024-12-25 19:22:39

Only stations from which a position packet has been heard are shown here. The range statistics show some extra long hops, because some digipeaters do not correctly add themselves to the digipeater path. Please check the raw packets.
About this site
This page shows real-time information collected from the Automatic Position Reporting System Internet network (APRS-IS). APRS is used by amateur (ham) radio operators to transmit real-time position information, weather data, telemetry and messages over the radio. A vehicle equipped with a GPS receiver, a VHF transmitter or HF transceiver and a small computer device called a tracker transmits it's location, speed and course in a small data packet, which is then received by a nearby iGate receiving site which forwards the packet on the Internet. Systems connected to the Internet can send information on the APRS-IS without a radio transmitter, or collect and display information transmitted anywhere in the world.
User guide · FAQ · Blog · Discussion group · Linking to aprs.fi · AIS sites · Service status · Database statistics · Advertising on aprs.fi · Technical details · API · Change log · Planned changes · Credits and thanks · Terms Of Service · iPhone/iPad APRS