Latest symbol  Antenna
Latest Packet:
Object Packet
Receive Time:
SARTrack (software, Windows) by ZL4FOX
Latest Comment:
442.500MHz T114 +5.0 Rptr[:442.500 TN
Receive Time:
(Received in latest packet)
Latest Position4:
36.4221666666667, -89.2798333333333
Receive Time:
(Received in latest packet)
499 ft
Nearby locations:
Englewood , United States 7.94 miles
Troy , United States 8.65 miles
Tiptonville , United States 11.11 miles
Union City , United States 12.39 miles
Latest RNG6:
20 miles
Packet frequency:
1660s (Latest 11 packets)
Latest symbol
Related stations/objects7:
Nearby stations/objects:
Symbol  147.045TN  (W4NWT-5) 0 yd
Symbol  W4NWT-5 102 yd
Symbol  WB4YDL-2 5.89 miles
Symbol  W4NWT B  (W4NWT-S) 7.26 miles
Symbol  W4NWT-B 7.26 miles
Symbol  WB4YDL-3 13.2 miles
Symbol  KUCY 16.93 miles
Symbol  EW4994 17.07 miles
Symbol  KG4ZDF 20.04 miles
Symbol  K4JTM 20.04 miles
Symbol  KJ4AJP 21.61 miles
Symbol  KJ4AJP-10  (WINLINK) 22.94 miles
Symbol  KJ4AJP-1 23.84 miles
Symbol  KK4DTT-9 24.08 miles
Symbol  KJ4HRM-10 25.23 miles

  1. A packet is either recived from the regular APRS-IS servers or from the CWOP servers. Packets received from the APRS-IS servers are sent from ham radio operators, and packets received from the CWOP servers are sent from citizen weather stations.
  2. To get a better understanding of the APRS path I recommend reading the explanation written by wa8lmf.
  3. Used Aprs Device according to the APRS device identification database.
  4. Position accordning to the Google geocoding service, based on the reported latitude and longitude (if we get no valid position from the Google gecoding service we will show the latitude and longitude).
  5. This is the Maidenhead Grid Square Locator, used by ham radio operators to specify a location (using few characters).
  6. RNG is the "pre-calculated omni-directional radio range" of the station (reported by the station itself). If this station has reported several positions or symbols the RNG data will only be used for the position and symbol used in the RNG-packet. It seems like many D-STAR station use the RNG value to specifify D-STAR range.
  7. If station has more than 30 related stations we will only show the 30 closest related stations.
Initial position
Current position

© 2015-2019 Per Qvarforth SM4WJF
All Rights Reserved

In this tab we show all APRS packets of any packet type that has been added to the map.

In this tab we show APRS packets of type position that has been added to the map (note that any station may send a position packet).

In this tab we show all APRS packets of type object or item that has been added to the map.

In this tab we show APRS packets of type weather that has been added to the map (note that any station may send a weather packet, not only weather stations).

In this tab we show APRS packets of type direction finding, telemetry, message, query and status that has been added to the map.

Select date and time to show map data for (enter time for your locale time zone). The regular time length select box can still be used to select how old data that should be shown (relative to selected date and time).

*Note that the heatmap will still based on data from the latest hour (not the selected date and time).

Date and time:


APRS Direct

Current time is:


Station filter

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