diff --git a/sdrbase/util/aprs.cpp b/sdrbase/util/aprs.cpp
index b3918a159..e4b1effec 100644
--- a/sdrbase/util/aprs.cpp
+++ b/sdrbase/util/aprs.cpp
@@ -1107,22 +1107,16 @@ bool APRSPacket::parseMicE(QString& info, int& idx, QString& dest)
         return false;
     }
 
-    // Mic-E Data is encoded in ASCII.
-    // 0: Longitude Degrees, 0-360
-    // 1: Longitude Minutes, 0-59
-    // 2: Longitude Hundreths of a minute, 0-99
-    // 3: Speed, units of 10
-    // 4: Speed, units of 1, Course, Units of 100
-    // 5: Course, 0-99 degrees
-    if (inRange(38, 127, charToIntAscii(info, idx))
-        && inRange(38, 97, charToIntAscii(info, idx+1))
-        && inRange(28, 127, charToIntAscii(info, idx+2))
-        && inRange(48, 127, charToIntAscii(info, idx+3))
-        && inRange(28, 125, charToIntAscii(info, idx+4))
-        && inRange(28, 127, charToIntAscii(info, idx+5))
+    // Mic-E Data is encoded in ASCII Characters
+    if (inRange(38, 127, charToIntAscii(info, idx))       // 0: Longitude Degrees, 0-360
+        && inRange(38, 97, charToIntAscii(info, idx+1))   // 1: Longitude Minutes, 0-59
+        && inRange(28, 127, charToIntAscii(info, idx+2))  // 2: Longitude Hundreths of a minute, 0-99
+        && inRange(28, 127, charToIntAscii(info, idx+3))  // 3: Speed (tens), 0-800
+        && inRange(28, 125, charToIntAscii(info, idx+4))  // 4: Speed (ones), 0-9, and Course (hundreds), {0, 100, 200, 300}
+        && inRange(28, 127, charToIntAscii(info, idx+5))  // 5: Course, 0-99 degrees
        )
     {
-        // Longitude, plus offset encoded in the AX.25 Destination
+        // Longitude; Degrees plus offset encoded in the AX.25 Destination
         // Destination Byte 5, ASCII P through Z indicates an offset of +100
         int deg = (charToIntAscii(info, idx) - 28) + longitudeOffset;
         if (inRange(180, 189, deg))
@@ -1134,7 +1128,8 @@ bool APRSPacket::parseMicE(QString& info, int& idx, QString& dest)
         int hundreths = charToIntAscii(info, idx+2);
 
         // Course and Speed
-
+        // Speed (SP+28, units of 10) can use two encodings: ASCII 28-47 and 108-127 are the same
+        // Speed & Course (DC+28, Speed units of 1, Course units of 100 e.g. 0, 100, 200, 300) uses two encodings
         int speed = ((charToIntAscii(info, idx+3) - 28) * 10) % 800; // Speed in 10 kts units
         float decoded_speed_course = (float)(charToIntAscii(info, idx+4) - 28) / 10.0;
         speed += floor(decoded_speed_course); // Speed in 1 kt units, added to above