Latest symbol  Igate (Generic)
Latest Packet:
Position Packet
Receive Time:
Aprx (software, Linux/Unix) by Kenneth W. Finnegan, W6KWF
Latest Comment:
Digi & IGate RX/TX R25k W2,SPn by SQ9NFI on Linux operator SQ9IWE ==>
Receive Time:
(Received in latest packet)
Latest Telemetry:
Latest Position4:
50.2978333333333, 19.0051666666667
Receive Time:
(Received in latest packet)
Nearby locations:
Chorzów, Poland 2.37 km
Siemianowice Śląskie, Poland 3.7 km
Katowice, Poland 4.66 km
Brzeziny Śląskie, Poland 6.51 km
Latest PHG6:
Power 16 W, Height 27 m, Gain 8 dB omni
(Calculated range: 32.36 km)
Nearby stations/objects:
Symbol  ER-SR9E  (SR9E) 22 m
Symbol  SP9UX 3.12 km
Symbol  DW4604 7.58 km
Symbol  SQ9IWE-13 8.34 km
Symbol  SR9HTY 8.93 km
Symbol  SP9DLM 8.97 km
Symbol  SP9DLM-9 9.05 km
Symbol  SP9RVF 9.33 km
Symbol  SQ9SIM-15 9.96 km
Symbol  SP9AMEN 10.52 km
Symbol  SP9OJP 10.66 km
Symbol  SP9GDI  (SP9UVG-13) 15.23 km
Symbol  SP9SDZ-4 18.93 km
Symbol  SP9SDZ-5 18.96 km
Symbol  SP9SDZ-1 18.97 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.
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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