Latest symbol  Digipeater
Latest Packet:
Position Packet
Receive Time:
APRX28 via qAR,W1GRE-1
Aprx (software, Linux/Unix) by Kenneth W. Finnegan, W6KWF
Latest Comment:
SC2,W3 CV-10 CHARLESTON,SC 146.79- T123.0
Receive Time:
(Received in latest packet)
Latest Position4:
32.791, -79.9081666666667
Receive Time:
(Received in latest packet)
Nearby locations:
Charleston, United States 2.66 km
Mount Pleasant, United States 4.27 km
Sullivans Island, United States 7.36 km
Isle of Palms, United States 10.61 km
Latest PHG6:
Power 36 W, Height 49 m, Gain 6 dB omni
(Calculated range: 47.1 km)
Packet frequency:
301s (Latest 7 packets)
Related stations/objects7:
Nearby stations/objects:
Symbol  DW5910 6.63 km
Symbol  DW6826 7.61 km
Symbol  EW1904 9.31 km
Symbol  FW1744 11.84 km
Symbol  EW7160 12.54 km
Symbol  DW8485 24.72 km
Symbol  W4HRS-15 25.74 km
Symbol  W1GRE-1 30.32 km
Symbol  KQ4G-1 31.61 km
Symbol  DW2447 33.35 km
Symbol  DW6476 35.15 km
Symbol  W1GRE-2 36.4 km
Symbol  W1GRE 37.57 km
Symbol  KX4DOR-11 39.69 km
Symbol  KX4DOR-12 39.72 km

  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. PHG stands for Power-Height-Gain (and directivity). The height is not the height above sea-level, it is the height above average terrain (HAAT = Height Above Average Terrain). PHG is used to calculate the relative RF range of a station. If this station has reported several positions or symbols the PHG data will only be used for the position and symbol used in the PHG-packet.
  7. If station has more than 30 related stations we will only show the 30 closest related stations.
Initial position
Current position

© 2015-2017 Per Qvarforth SM4WJF
All Rights Reserved
Here you can change how long time a station should be visible.

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:


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