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 KB9SVR-4 - show graphs
Comment: YSF 23018
Location: 42°01.78' N 88°17.52' W - locator EN52UA47XC - show map
5.8 miles West bearing 273° from Streamwood, Cook County, Illinois, United States [?]
6.0 miles Northwest bearing 294° from Bartlett, Cook County, Illinois, United States
35.2 miles West bearing 291° from Chicago, Cook County, Illinois, United States
72.4 miles South bearing 196° from Milwaukee, Milwaukee County, Wisconsin, United States
Last position: 2025-01-27 01:23:44 EST (15s ago)
2025-01-27 00:23:44 CST local time at Streamwood, United States [?]
Altitude: 774 ft
Device: SharkRF: openSPOT4 (gadget)
Last path: KB9SVR-4>APOSB4 via TCPIP*,qAS,KB9SVR
Positions stored: 2
Packet rate: 600 seconds between packets on average during 11405 seconds.
Other SSIDs: KB9SVR KB9SVR-i KB9SVR-7 KB9SVR-9
APRS digipeater – Statistics for 2025-01:
Stations heard directly: 1 on radio path – show map
Last heard a station directly: 2025-01-26 00:41:17 EST (1d 42m ago)
Position packets heard directly: 135 on radio path
Stations near current position of KB9SVR-4 - show more
callsign distance last heard - EST      callsign distance last heard - EST
KB9SVR-i2.2 yards 304°2025-01-26 00:49:20 KB9SVR20.7 yards 180°2025-01-26 01:19:56
KB9SVR-725.7 yards 217°2025-01-26 00:41:17 K9GCP0.3 miles 145°2025-01-27 00:57:30
K9GCP-30.3 miles 145°2025-01-24 23:07:01 WQ9F-72.4 miles 244°2025-01-25 15:02:48
KA9ZRU-92.5 miles 332°2025-01-18 20:22:27 WB9YJT2.7 miles 46°2025-01-27 01:22:10
KD9LQG2.7 miles 105°2025-01-22 20:49:20 kb9rto-ios2.8 miles 311°2025-01-26 20:57:21
KD9VDN-92.8 miles 296°2025-01-25 13:25:06 KD9MBA B3.5 miles 187°2025-01-27 01:22:53
KD9MBA-B3.5 miles 187°2025-01-27 01:23:03 EW71515.9 miles 5°2025-01-27 01:22:50
FW94616.1 miles 99°2025-01-27 01:22:20 N2ZQO-96.3 miles 72°2025-01-09 16:03:22
KC9RXM-137.2 miles 118°2025-01-25 08:51:17 FW52957.3 miles 253°2025-01-27 01:21:01
AB9SG7.3 miles 104°2025-01-22 11:53:39 AB9SG B7.3 miles 104°2025-01-27 01:07:38
Stations heard directly by KB9SVR-4
callsign pkts first heard - EST last heard longest (rx => tx) longest at - EST
KB9SVR-7 135 2025-01-09 19:49:48 2025-01-26 01:06:22 EN91BJ > EN52UA 334.9 miles 95° 2025-01-09 19:50:18

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