diff --git a/stream/mts/psi/psi_test.go b/stream/mts/psi/psi_test.go
index 7078e340..d08d9e90 100644
--- a/stream/mts/psi/psi_test.go
+++ b/stream/mts/psi/psi_test.go
@@ -124,19 +124,8 @@ const (
 // GPS string for testing
 // TODO: make these realistic
 var (
-	locationBytes1 = [LocationDataSize]byte{
-		0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
-		0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
-		0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
-		0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
-	}
-
-	locationBytes2 = [LocationDataSize]byte{
-		0x08, 0x07, 0x06, 0x05, 0x04, 0x03, 0x02, 0x01,
-		0x08, 0x07, 0x06, 0x05, 0x04, 0x03, 0x02, 0x01,
-		0x08, 0x07, 0x06, 0x05, 0x04, 0x03, 0x02, 0x01,
-		0x08, 0x07, 0x06, 0x05, 0x04, 0x03, 0x02, 0x01,
-	}
+	locationTstStr1 = []byte("$GPGGA,123519,4807.038,N,01131.0")
+	locationTstStr2 = []byte("$GPGGA,183710,4902.048,N,02171.0")
 )
 
 // err message
@@ -186,10 +175,10 @@ var (
 	}
 
 	// Bytes representing pmt with time1 and location1
-	pmtWithMetaTst1 = buildPmtWithMeta(locationBytes1[:])
+	pmtWithMetaTst1 = buildPmtWithMeta(locationTstStr1)
 
 	// bytes representing pmt with with time1 and location 2
-	pmtWithMetaTst2 = buildPmtWithMeta(locationBytes2[:])
+	pmtWithMetaTst2 = buildPmtWithMeta(locationTstStr2)
 )
 
 // bytesTests contains data for testing the Bytes() funcs for the PSI data struct
@@ -273,7 +262,7 @@ var bytesTests = []struct {
 						{
 							Dt: LocationDescTag,
 							Dl: LocationDataSize,
-							Dd: locationBytes1[:],
+							Dd: locationTstStr1,
 						},
 					},
 					Essd: &ESSD{
@@ -284,7 +273,7 @@ var bytesTests = []struct {
 				},
 			},
 		},
-		want: buildPmtWithMeta(locationBytes1[:]),
+		want: buildPmtWithMeta(locationTstStr1),
 	},
 }
 
@@ -337,16 +326,16 @@ func TestTimeGet(t *testing.T) {
 // TestLocationGet checks that we can correctly get location data from a pmt table
 func TestLocationGet(t *testing.T) {
 	pb := standardPmtWithMeta.Bytes()
-	err := UpdateLocation(pb, string(locationBytes1[:]))
+	err := UpdateLocation(pb, string(locationTstStr1))
 	if err != nil {
-		t.Errorf("Error for TestLocationGet UpdateLocation(pb, locationBytes1): %v", err)
+		t.Errorf("Error for TestLocationGet UpdateLocation(pb, locationTstStr1): %v", err)
 	}
 	g, err := LocationFrom(pb)
 	if err != nil {
 		t.Errorf("Error for TestLocationGet LocationOf(pb): %v", err)
 	}
-	if g != string(locationBytes1[:]) {
-		t.Errorf(errCmp, "TestLocationGet", locationBytes1, g)
+	if g != string(locationTstStr1) {
+		t.Errorf(errCmp, "TestLocationGet", locationTstStr1, g)
 	}
 }
 
@@ -355,7 +344,7 @@ func TestLocationUpdate(t *testing.T) {
 	cpy := make([]byte, len(pmtWithMetaTst1))
 	copy(cpy, pmtWithMetaTst1)
 	cpy = addCrc(cpy)
-	err := UpdateLocation(cpy, string(locationBytes2[:]))
+	err := UpdateLocation(cpy, string(locationTstStr2))
 	cpy = cpy[:len(cpy)-4]
 	if err != nil {
 		t.Errorf("Update time returned err: %v", err)