diff --git a/AntennaTracker/Log.cpp b/AntennaTracker/Log.cpp
index 36dababfd7..587c00ed17 100644
--- a/AntennaTracker/Log.cpp
+++ b/AntennaTracker/Log.cpp
@@ -70,12 +70,15 @@ void Tracker::Log_Write_Vehicle_Pos(int32_t lat, int32_t lng, int32_t alt, const
     DataFlash.WriteBlock(&pkt, sizeof(pkt));
 }
 
+// type and unit information can be found in
+// libraries/DataFlash/Logstructure.h; search for "log_Units" for
+// units and "Format characters" for field type information
 const struct LogStructure Tracker::log_structure[] = {
     LOG_COMMON_STRUCTURES,
     {LOG_V_BAR_MSG, sizeof(log_Vehicle_Baro),
-        "VBAR", "Qff", "TimeUS,Press,AltDiff" },
+        "VBAR", "Qff", "TimeUS,Press,AltDiff", "sPm", "F00" },
     {LOG_V_POS_MSG, sizeof(log_Vehicle_Pos),
-        "VPOS", "QLLefff", "TimeUS,Lat,Lng,Alt,VelX,VelY,VelZ" }
+        "VPOS", "QLLefff", "TimeUS,Lat,Lng,Alt,VelX,VelY,VelZ", "sddmnnn", "FGGB000" }
 };
 
 void Tracker::Log_Write_Vehicle_Startup_Messages()