diff --git a/AntennaTracker/GCS_Mavlink.cpp b/AntennaTracker/GCS_Mavlink.cpp
index c080251288..35ee0f074a 100644
--- a/AntennaTracker/GCS_Mavlink.cpp
+++ b/AntennaTracker/GCS_Mavlink.cpp
@@ -98,28 +98,6 @@ void Tracker::send_extended_status1(mavlink_channel_t chan)
         0, 0, 0, 0);
 }
 
-void Tracker::send_location(mavlink_channel_t chan)
-{
-    uint32_t fix_time;
-    if (gps.status() >= AP_GPS::GPS_OK_FIX_2D) {
-        fix_time = gps.last_fix_time_ms();
-    } else {
-        fix_time = AP_HAL::millis();
-    }
-    const Vector3f &vel = gps.velocity();
-    mavlink_msg_global_position_int_send(
-        chan,
-        fix_time,
-        current_loc.lat,                // in 1E7 degrees
-        current_loc.lng,                // in 1E7 degrees
-        current_loc.alt * 10,        // millimeters above sea level
-        0,
-        vel.x * 100,  // X speed cm/s (+ve North)
-        vel.y * 100,  // Y speed cm/s (+ve East)
-        vel.z * 100,  // Z speed cm/s (+ve Down)
-        ahrs.yaw_sensor);
-}
-
 void Tracker::send_nav_controller_output(mavlink_channel_t chan)
 {
 	float alt_diff = (g.alt_source == ALT_SOURCE_BARO) ? nav_status.alt_difference_baro : nav_status.alt_difference_gps;
@@ -161,11 +139,6 @@ bool GCS_MAVLINK_Tracker::try_send_message(enum ap_message id)
 {
     switch (id) {
 
-    case MSG_LOCATION:
-        CHECK_PAYLOAD_SIZE(GLOBAL_POSITION_INT);
-        tracker.send_location(chan);
-        break;
-
     case MSG_NAV_CONTROLLER_OUTPUT:
         CHECK_PAYLOAD_SIZE(NAV_CONTROLLER_OUTPUT);
         tracker.send_nav_controller_output(chan);
diff --git a/AntennaTracker/GCS_Mavlink.h b/AntennaTracker/GCS_Mavlink.h
index b0471b1028..39a10727f1 100644
--- a/AntennaTracker/GCS_Mavlink.h
+++ b/AntennaTracker/GCS_Mavlink.h
@@ -26,6 +26,10 @@ protected:
 
     MAV_RESULT _handle_command_preflight_calibration_baro() override;
 
+    int32_t global_position_int_relative_alt() const {
+        return 0; // what if we have been picked up and carried somewhere?
+    }
+
 private:
 
     void packetReceived(const mavlink_status_t &status, mavlink_message_t &msg) override;
diff --git a/AntennaTracker/Tracker.h b/AntennaTracker/Tracker.h
index ebe76161cf..4641179078 100644
--- a/AntennaTracker/Tracker.h
+++ b/AntennaTracker/Tracker.h
@@ -200,7 +200,6 @@ private:
     void one_second_loop();
     void ten_hz_logging_loop();
     void send_extended_status1(mavlink_channel_t chan);
-    void send_location(mavlink_channel_t chan);
     void send_nav_controller_output(mavlink_channel_t chan);
     void send_simstate(mavlink_channel_t chan);
     void gcs_data_stream_send(void);