diff --git a/RX_FSK/RX_FSK.ino b/RX_FSK/RX_FSK.ino
index 7ca701e..e0a1923 100644
--- a/RX_FSK/RX_FSK.ino
+++ b/RX_FSK/RX_FSK.ino
@@ -108,7 +108,7 @@ extern float calcLatLonDist(float lat1, float lon1, float lat2, float lon2);
 // KISS over TCP for communicating with APRSdroid
 WiFiServer tncserver(14580);
 WiFiClient tncclient;
-// JSON over TCP for communicating with my kotlin andoird test stuff
+// JSON over TCP for communicating with the rdzSonde (rdzwx-go) Android app
 WiFiServer rdzserver(14570);
 WiFiClient rdzclient;
 // APRS over TCP for radiosondy.info etc
diff --git a/RX_FSK/data/rdz.js b/RX_FSK/data/rdz.js
index 28a5446..c8c26ad 100644
--- a/RX_FSK/data/rdz.js
+++ b/RX_FSK/data/rdz.js
@@ -28,7 +28,7 @@ function prep() {
 function qrgTable() {
   var tab=document.getElementById("divTable");
 
-  var table = "<table><tr><th>ID</th><th>Active</th><th>Freq</th><th>Launchsite</th><th>Mode</th></tr>";
+  var table = "<table><tr><th>Ch</th><th>Active</th><th>Frequency</th><th>Launchsite</th><th>Decoder</th></tr>";
   for(i=0; i<qrgs.length; i++) {
      var ck = "";
      if(qrgs[i][0]) ck="checked";
diff --git a/RX_FSK/src/mqtt.cpp b/RX_FSK/src/mqtt.cpp
index c2380d1..6b0b044 100644
--- a/RX_FSK/src/mqtt.cpp
+++ b/RX_FSK/src/mqtt.cpp
@@ -6,11 +6,17 @@
 #include "RS41.h"
 #include "json.h"
 
-TimerHandle_t mqttReconnectTimer;
 
+extern const int SPIFFS_MAJOR;
+extern const int SPIFFS_MINOR;
 extern const char *version_name;
 extern const char *version_id;
 
+const int MQTT_VER = SPIFFS_MAJOR;
+const int MQTT_SUB = SPIFFS_MINOR;
+
+TimerHandle_t mqttReconnectTimer;
+
 void mqttCallback(char* topic, byte* payload, unsigned int length) {
   Serial.print("Message arrived [");
   Serial.print(topic);
@@ -51,12 +57,13 @@ void MQTT::publishUptime()
     mqttClient.connect(); // ensure we've got connection
 
     Serial.println("[MQTT] writing");
-    //char payload[128];
-    //snprintf(payload, 12, "%lu", millis());
-    //snprintf(payload, 124, "{\"uptime\": %lu," "\"user\": \"%s\"", millis(),         username );
-    char payload[128];
-    snprintf(payload, 128, "{\"uptime\": %ld, \"user\": \"%s\", \"rxlat\": %.5f, \"rxlon\": %.5f, \"ver\": \"%s\", \"sub\": \"%s\"}",
-	millis(), username, sonde.config.rxlat, sonde.config.rxlon, version_name, version_id); 
+    char payload[256];
+    // maybe TODO: Use dynamic position if GPS is available?
+    // rxlat, rxlon only if not empty
+    snprintf(payload, 256, "{\"uptime\": %lu, \"user\": \"%s\", ", millis(), username);
+    if( !isnan(sonde.config.rxlat) && !isnan(sonde.config.rxlon) ) {
+    snprintf(payload, 256, "%s\"rxlat\": %.5f, \"rxlon\": %.5f, ", payload, sonde.config.rxlat, sonde.config.rxlon);
+    snprintf(payload, 256, "%s\"sw\": \"%s\", \"ver\": \"%s\"}", version_name, version_id);
     Serial.println(payload);
     char topic[128];
     snprintf(topic, 128, "%s%s", this->prefix, "uptime");