determine locator from gps coordinates

config_webrx.py

@@ -287,7 +287,6 @@ aprs_symbols_path = "/opt/aprs-symbols/png"
 
 # === PSK Reporter setting ===
 # enable this if you want to upload all ft8, ft4 etc spots to pskreporter.info
-# this also uses the receiver_qra setting from above, so make sure it contains a correct locator
+# this also uses the receiver_gps setting from above, so make sure it contains a correct locator
-# TODO determine locator from gps coordinates
 pskreporter_enabled = False
 pskreporter_callsign = "N0CALL"

owrx/locator.py

@@ -0,0 +1,24 @@
+class Locator(object):
+    @staticmethod
+    def fromCoordinates(coordinates, depth=3):
+
+        lat, lon = coordinates
+
+        lon = lon + 180
+        lat = lat + 90
+
+        res = ""
+        res += chr(65 + int(lon / 20))
+        res += chr(65 + int(lat / 10))
+        if depth >= 2:
+            lon = lon % 20
+            lat = lat % 10
+            res += str(int(lon / 2))
+            res += str(int(lat))
+        if depth >= 3:
+            lon = lon % 2
+            lat = lat % 1
+            res += chr(97 + int(lon * 12))
+            res += chr(97 + int(lat * 24))
+
+        return res

owrx/pskreporter.py

@@ -6,6 +6,7 @@ import socket
 from sched import scheduler
 from owrx.config import PropertyManager
 from owrx.version import openwebrx_version
+from owrx.locator import Locator
 
 logger = logging.getLogger(__name__)
 
@@ -143,7 +144,7 @@ class Uploader(object):
     def getReceiverInformation(self):
         pm = PropertyManager.getSharedInstance()
         callsign = pm["pskreporter_callsign"]
-        locator = pm["receiver_qra"]
+        locator = Locator.fromCoordinates(pm["receiver_gps"])
         decodingSoftware = "OpenWebRX " + openwebrx_version
         body = [b for s in [callsign, locator, decodingSoftware] for b in self.encodeString(s)]
         body = self.pad(body, 4)