diff --git a/src/helpers/SensorManager.h b/src/helpers/SensorManager.h
index 839e2736..0e4bc27d 100644
--- a/src/helpers/SensorManager.h
+++ b/src/helpers/SensorManager.h
@@ -11,8 +11,9 @@
 class SensorManager {
 public:
   double node_lat, node_lon;  // modify these, if you want to affect Advert location
+  double node_altitude;       // altitude in meters
 
-  SensorManager() { node_lat = 0; node_lon = 0; }
+  SensorManager() { node_lat = 0; node_lon = 0; node_altitude = 0; }
   virtual bool begin() { return false; }
   virtual bool querySensors(uint8_t requester_permissions, CayenneLPP& telemetry) { return false; }
   virtual void loop() { }
diff --git a/src/helpers/sensors/LocationProvider.h b/src/helpers/sensors/LocationProvider.h
index b5ac5812..056e61e0 100644
--- a/src/helpers/sensors/LocationProvider.h
+++ b/src/helpers/sensors/LocationProvider.h
@@ -8,6 +8,7 @@ class LocationProvider {
 public:
     virtual long getLatitude() = 0;
     virtual long getLongitude() = 0;
+    virtual long getAltitude() = 0;
     virtual bool isValid() = 0;
     virtual long getTimestamp() = 0;
     virtual void reset();
diff --git a/src/helpers/sensors/MicroNMEALocationProvider.h b/src/helpers/sensors/MicroNMEALocationProvider.h
index da9f74f6..9f439e25 100644
--- a/src/helpers/sensors/MicroNMEALocationProvider.h
+++ b/src/helpers/sensors/MicroNMEALocationProvider.h
@@ -61,6 +61,11 @@ public :
 
     long getLatitude() override { return nmea.getLatitude(); }
     long getLongitude() override { return nmea.getLongitude(); }
+    long getAltitude() override { 
+        long alt = 0;
+        nmea.getAltitude(alt);
+        return alt;
+    }
     bool isValid() override { return nmea.isValid(); }
 
     long getTimestamp() override { 
diff --git a/variants/heltec_tracker/target.cpp b/variants/heltec_tracker/target.cpp
index c82b70ad..461b7cac 100644
--- a/variants/heltec_tracker/target.cpp
+++ b/variants/heltec_tracker/target.cpp
@@ -103,7 +103,7 @@ bool HWTSensorManager::begin() {
 
 bool HWTSensorManager::querySensors(uint8_t requester_permissions, CayenneLPP& telemetry) {
   if (requester_permissions & TELEM_PERM_LOCATION) {   // does requester have permission?
-    telemetry.addGPS(TELEM_CHANNEL_SELF, node_lat, node_lon, 0.0f);
+    telemetry.addGPS(TELEM_CHANNEL_SELF, node_lat, node_lon, node_altitude);
   }
   return true;
 }
@@ -117,6 +117,7 @@ void HWTSensorManager::loop() {
     if (gps_active && _location->isValid()) {
       node_lat = ((double)_location->getLatitude())/1000000.;
       node_lon = ((double)_location->getLongitude())/1000000.;
+      node_altitude = ((double)_location->getAltitude()) / 1000.0;
       MESH_DEBUG_PRINTLN("lat %f lon %f", node_lat, node_lon);
     }
     next_gps_update = millis() + 1000;
diff --git a/variants/lilygo_tbeam_supreme_SX1262/target.cpp b/variants/lilygo_tbeam_supreme_SX1262/target.cpp
index 3808e5fd..4422e27e 100644
--- a/variants/lilygo_tbeam_supreme_SX1262/target.cpp
+++ b/variants/lilygo_tbeam_supreme_SX1262/target.cpp
@@ -287,7 +287,7 @@ bool TbeamSupSensorManager::begin() {
 
 bool TbeamSupSensorManager::querySensors(uint8_t requester_permissions, CayenneLPP& telemetry) {
   if (requester_permissions & TELEM_PERM_LOCATION) {   // does requester have permission?
-    telemetry.addGPS(TELEM_CHANNEL_SELF, node_lat, node_lon, 0.0f);
+    telemetry.addGPS(TELEM_CHANNEL_SELF, node_lat, node_lon, node_altitude);
   }
   return true;
 }
@@ -301,6 +301,7 @@ void TbeamSupSensorManager::loop() {
     if (_nmea->isValid()) {
       node_lat = ((double)_nmea->getLatitude())/1000000.;
       node_lon = ((double)_nmea->getLongitude())/1000000.;
+      node_altitude = ((double)_nmea->getAltitude()) / 1000.0;
       //Serial.printf("lat %f lon %f\r\n", _lat, _lon);
     }
     next_gps_update = millis() + 1000;
diff --git a/variants/t1000-e/target.cpp b/variants/t1000-e/target.cpp
index f4bb75f6..9449dd2c 100644
--- a/variants/t1000-e/target.cpp
+++ b/variants/t1000-e/target.cpp
@@ -154,7 +154,7 @@ bool T1000SensorManager::begin() {
 
 bool T1000SensorManager::querySensors(uint8_t requester_permissions, CayenneLPP& telemetry) {
   if (requester_permissions & TELEM_PERM_LOCATION) {   // does requester have permission?
-    telemetry.addGPS(TELEM_CHANNEL_SELF, node_lat, node_lon, 0.0f);
+    telemetry.addGPS(TELEM_CHANNEL_SELF, node_lat, node_lon, node_altitude);
   }
   return true;
 }
@@ -168,6 +168,7 @@ void T1000SensorManager::loop() {
     if (_nmea->isValid()) {
       node_lat = ((double)_nmea->getLatitude())/1000000.;
       node_lon = ((double)_nmea->getLongitude())/1000000.;
+      node_altitude = ((double)_nmea->getAltitude()) / 1000.0;
       //Serial.printf("lat %f lon %f\r\n", _lat, _lon);
     }
     next_gps_update = millis() + 1000;
diff --git a/variants/t114/target.cpp b/variants/t114/target.cpp
index e8773dbb..3e34ff92 100644
--- a/variants/t114/target.cpp
+++ b/variants/t114/target.cpp
@@ -111,7 +111,7 @@ bool T114SensorManager::begin() {
 
 bool T114SensorManager::querySensors(uint8_t requester_permissions, CayenneLPP& telemetry) {
   if (requester_permissions & TELEM_PERM_LOCATION) {   // does requester have permission?
-    telemetry.addGPS(TELEM_CHANNEL_SELF, node_lat, node_lon, 0.0f);
+    telemetry.addGPS(TELEM_CHANNEL_SELF, node_lat, node_lon, node_altitude);
   }
   return true;
 }
@@ -125,6 +125,7 @@ void T114SensorManager::loop() {
     if (_location->isValid()) {
       node_lat = ((double)_location->getLatitude())/1000000.;
       node_lon = ((double)_location->getLongitude())/1000000.;
+      node_altitude = ((double)_location->getAltitude()) / 1000.0;
       MESH_DEBUG_PRINTLN("lat %f lon %f", node_lat, node_lon);
     }
     next_gps_update = millis() + 1000;