Latest symbol  Digipeater
Latest Packet:
Position Packet
Receive Time:
APNU19 via WIDE1-1,qAR,JK7IZT-10
UIdigi (digi) by IW3FQG
Latest Forwarded:
Receive Time:
Latest Comment:
Iwaizumi-town Iwate
Receive Time:
(Received in latest packet)
Latest Position4:
39.8641666666667, 141.947166666667
Receive Time:
(Received in latest packet)
Nearby locations:
Miyako , Japan 15.01 miles
Kuji , Japan 24.27 miles
Yamada , Japan 27.46 miles
Ōtsuchi , Japan 34.46 miles
Latest PHG6:
Power 9 W, Height 89 ft, Gain 6 dB omni
(Calculated range: 15.52 miles)
Packet frequency:
1350s (Latest 4 packets)
Latest symbol
Search for JO7JQF at QRZ.COM!

(Link to

Nearby stations/objects:
Symbol  JK7IZT-10 16.23 miles
Symbol  JE7ZBQ B 17.08 miles
Symbol  JE7ZBQ-B 17.08 miles
Symbol  JO7PRF 24.71 miles
Symbol  JP7YEM-I 42.15 miles
Symbol  JR7BON-1 42.64 miles
Symbol  JA7YAG-1 43.27 miles
Symbol  JA7OMC-10 43.68 miles
Symbol  JQ1ZRE-10 44.57 miles
Symbol  JE7ZBQ C 46.86 miles
Symbol  JE7ZBQ-C 46.86 miles
Symbol  JK7DUL-15 47.85 miles
Symbol  JP7YET-I 49.99 miles
Symbol  JR7GYV-3 50.73 miles
Symbol  JH7JDC 52.54 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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