diff --git a/libraries/SITL/SIM_ADSB.cpp b/libraries/SITL/SIM_ADSB.cpp
index 2695c138ad..f70891f474 100644
--- a/libraries/SITL/SIM_ADSB.cpp
+++ b/libraries/SITL/SIM_ADSB.cpp
@@ -173,10 +173,10 @@ void ADSB::send_report(void)
             adsb_vehicle.lat = loc.lat;
             adsb_vehicle.lon = loc.lng;
             adsb_vehicle.altitude_type = ADSB_ALTITUDE_TYPE_PRESSURE_QNH;
-            adsb_vehicle.altitude = -vehicle.position.z;
+            adsb_vehicle.altitude = -vehicle.position.z * 1000;
             adsb_vehicle.heading = wrap_360_cd(100*degrees(atan2f(vehicle.velocity_ef.y, vehicle.velocity_ef.x))) / 100;
-            adsb_vehicle.hor_velocity = pythagorous2(vehicle.velocity_ef.x, vehicle.velocity_ef.y);
-            adsb_vehicle.ver_velocity = -vehicle.velocity_ef.z;
+            adsb_vehicle.hor_velocity = pythagorous2(vehicle.velocity_ef.x, vehicle.velocity_ef.y) * 100;
+            adsb_vehicle.ver_velocity = -vehicle.velocity_ef.z * 100;
             memcpy(adsb_vehicle.callsign, vehicle.callsign, sizeof(adsb_vehicle.callsign));
             adsb_vehicle.emitter_type = ADSB_EMITTER_TYPE_LARGE;
             adsb_vehicle.tslc = 1;
@@ -187,7 +187,7 @@ void ADSB::send_report(void)
                 ADSB_FLAGS_VALID_VELOCITY |
                 ADSB_FLAGS_VALID_CALLSIGN |
                 ADSB_FLAGS_SIMULATED;
-            adsb_vehicle.squawk = 0; // NOTE: ADSB_FLAGS_VALID_SQUAWK is not set
+            adsb_vehicle.squawk = 0; // NOTE: ADSB_FLAGS_VALID_SQUAWK bit is not set
 
             mavlink_status_t *chan0_status = mavlink_get_channel_status(MAVLINK_COMM_0);
             uint8_t saved_seq = chan0_status->current_tx_seq;