diff --git a/plugins/channel/lora/lorabits.h b/plugins/channel/lora/lorabits.h
index 09d8f4777..76839a063 100644
--- a/plugins/channel/lora/lorabits.h
+++ b/plugins/channel/lora/lorabits.h
@@ -22,7 +22,7 @@ short LoRaDemod::toGray(short num)
         return (num >> 1) ^ num;
 }
 
-// ignore FEC, data in lsb
+// ignore FEC, try data in lsb, bigendian
 void LoRaDemod::hamming(char* inout, int size)
 {
 	int i;
@@ -35,11 +35,11 @@ void LoRaDemod::hamming(char* inout, int size)
 	inout[i] = 0;
 }
 
-// data whitening
+// example data whitening (4 bit only - needs 6 bit for FEC)
 void LoRaDemod::prng(char* inout, int size)
 {
 	const char otp[] = {
-	"                                                                                                                                                                              "
+	"EHFGKHGMGKGMGHG@FKDN@EHBMGBOLFALO@GIBIICJNMDFIDHAHJHMHBBHLHCHLH@IINCAOJFMLF@EKBDIAJKMNBEMBGMBKLMAHOHFHDB@DH@H@HAIKKDKAOKGDBAMIGIBCMLGCFODFAFNLECBLIHKHNBALJA"
 	};
 	int i, maxchars;
 
@@ -47,6 +47,6 @@ void LoRaDemod::prng(char* inout, int size)
 	if (size < maxchars)
 		maxchars = size;
 	for (i = 0; i < maxchars; i++)
-		inout[i] ^= otp[i] - 32;
+		inout[i] ^= otp[i];
 }
 
diff --git a/plugins/channel/lora/lorademod.cpp b/plugins/channel/lora/lorademod.cpp
index 8ffa9f3c4..54c0965be 100644
--- a/plugins/channel/lora/lorademod.cpp
+++ b/plugins/channel/lora/lorademod.cpp
@@ -73,6 +73,7 @@ void LoRaDemod::configure(MessageQueue* messageQueue, Real Bandwidth)
 
 void LoRaDemod::dumpRaw()
 {
+	char hex[] = {"0123456789ABCDEFXXXX"};
 	short bin, j, max;
 	max = m_time / 4 - 3;
 	if (max > 80)
@@ -84,12 +85,17 @@ void LoRaDemod::dumpRaw()
 	}
 	for ( j=0; j < max; j+=6)
 		interleave(&text[j]);
-	prng(text, max); // ??
+	prng(text, max);
 	hamming(text, max);
-	for ( j=0; j < max; j++)
-		text[j] += 64; // 4 bits per symbol
+	for ( j=0; j < max; j++) {
+		text[j] = hex[ (0xf & text[j]) ];
+	}
+//	for ( j=0; j < max / 2; j++) {
+//		if ((text[j] < 32 )||( text[j] > 126))
+//			text[j] = 0x5f;
+//	}
 	text[j] = 0;
-	printf(">%s<\n", text);
+	printf("%s\n", text);
 }
 
 short LoRaDemod::synch(short bin)