Latest symbol  Digipeater (New n-N Paradigm digi)
Latest Packet:
Position Packet
Receive Time:
APNU19 via qAR,JA4XO-1
UIdigi (digi) by IW3FQG
Latest Forwarded:
Receive Time:
Latest Comment:
3/W1,HGn-N Fill-in Siso-City 144.66MHz 1k2
Receive Time:
(Received in latest packet)
Latest Status:
Receive Time:
Latest Position4:
35.1328333333333, 134.656833333333
Receive Time:
(Received in latest packet)
Nearby locations:
Yamazakichō-nakabirose , Japan 10.99 miles
Shisō , Japan 11.73 miles
Asago , Japan 12.44 miles
Himeji , Japan 21.98 miles
Latest PHG6:
Power 9 W, Height 640 ft, Gain 4 dB omni
(Calculated range: 36.89 miles)
Packet frequency:
1198s (Latest 3 packets)
Latest symbol
Search for JH3YBD at QRZ.COM!

(Link to

Related stations/objects7:
Nearby stations/objects:
Symbol  JH3YBD-2 21 yd
Symbol  JE3EMV 4.98 miles
Symbol  JE3NRO-7 12.7 miles
Symbol  JQ3FUT-12 13.15 miles
Symbol  JO3NNV-9 13.51 miles
Symbol  JA3DYM 18.4 miles
Symbol  JA3TMM-7 20.5 miles
Symbol  JA3TMM-10 20.56 miles
Symbol  JH3XVQ-1 20.58 miles
Symbol  JP3YCO-I 22.73 miles
Symbol  JI3YVA-N 22.75 miles
Symbol  JI3YVA-2 22.76 miles
Symbol  JI3YVA-1 22.77 miles
Symbol  JP3YIG-I 23.17 miles
Symbol  JA3MZJ-10 24.17 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.
  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:


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