Latest symbol  House (HF)
Latest Packet:
Telemetry Packet
Receive Time:
APRSIS32 (software, Windows) by KJ4ERJ
Latest Comment:
APRS-IS for Win32
Receive Time:
Latest Beacon:
Receive Time:
Latest Weather:
Latest Telemetry:
Latest Position4:
34.8071666666667, -86.612
Receive Time:
Nearby locations:
Meridianville , United States 3.8 miles
Huntsville , United States 5.51 miles
Moores Mill , United States 5.89 miles
Redstone Arsenal , United States 8.76 miles
Latest PHG6:
Power 9 W, Height 10 ft, Gain 0 dB omni
(Calculated range: 3.66 miles)
Latest symbol
Search for KD4MPW at QRZ.COM!

(Link to

Nearby stations/objects:
Symbol  KD4MPW-1 363 yd
Symbol  K4TTZ 2.5 miles
Symbol  KM4MGJ B  (KM4MGJ-S) 3.21 miles
Symbol  KM4MGJ-B 3.21 miles
Symbol  WA7VKF-1 3.58 miles
Symbol  EW6742 4.97 miles
Symbol  W4HSV 5.12 miles
Symbol  DW8953 5.83 miles
Symbol  W4HMC-1 5.9 miles
Symbol  EW6182 5.96 miles
Symbol  EW8041 6.27 miles
Symbol  FW2662 6.42 miles
Symbol  N4WGY-10  (WINLINK) 8.01 miles
Symbol  KE4ROR B  (KE4ROR-S) 8.29 miles
Symbol  KE4ROR-B 8.29 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. 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

© 2015-2019 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:


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