diff --git a/keywords.txt b/keywords.txt
index 6a9ba54..f4f82c7 100644
--- a/keywords.txt
+++ b/keywords.txt
@@ -21,6 +21,7 @@ endPacket	KEYWORD2
 parsePacket	KEYWORD2
 packetRssi	KEYWORD2
 packetSnr	KEYWORD2
+packetFrequencyError	KEYWORD2
 
 write	KEYWORD2
 
@@ -48,6 +49,7 @@ random	KEYWORD2
 setPins	KEYWORD2
 setSPIFrequency	KEYWORD2
 dumpRegisters	KEYWORD2
+getSignalBandwidth	KEYWORD2
 
 #######################################
 # Constants (LITERAL1)
diff --git a/src/LoRa.cpp b/src/LoRa.cpp
index 5fb4256..58a10eb 100644
--- a/src/LoRa.cpp
+++ b/src/LoRa.cpp
@@ -25,6 +25,7 @@
 #define REG_PREAMBLE_LSB         0x21
 #define REG_PAYLOAD_LENGTH       0x22
 #define REG_MODEM_CONFIG_3       0x26
+#define REG_FREQ_ERROR           0x28
 #define REG_RSSI_WIDEBAND        0x2c
 #define REG_DETECTION_OPTIMIZE   0x31
 #define REG_DETECTION_THRESHOLD  0x37
@@ -211,6 +212,25 @@ float LoRaClass::packetSnr()
   return ((int8_t)readRegister(REG_PKT_SNR_VALUE)) * 0.25;
 }
 
+double LoRaClass::packetFrequencyError()
+{
+  int32_t fe = (int32_t)readRegister(REG_FREQ_ERROR) & 7;
+  fe <<= 8L;
+  fe += (int32_t)readRegister(REG_FREQ_ERROR+1);
+  fe <<= 8L;
+  fe += (int32_t)readRegister(REG_FREQ_ERROR+2);
+  
+  if (readRegister(REG_FREQ_ERROR) & 8) {
+    fe = fe - 524288;
+  }
+
+  double freqError = (double)fe;
+  freqError *=  (16777216.0 / 32000000.0);
+  freqError *= (getSignalBandwidth() / 500000.0);
+
+  return freqError;
+}
+
 size_t LoRaClass::write(uint8_t byte)
 {
   return write(&byte, sizeof(byte));
@@ -365,6 +385,23 @@ void LoRaClass::setSpreadingFactor(int sf)
   writeRegister(REG_MODEM_CONFIG_2, (readRegister(REG_MODEM_CONFIG_2) & 0x0f) | ((sf << 4) & 0xf0));
 }
 
+long LoRaClass::getSignalBandwidth()
+{
+  byte bw = (readRegister(REG_MODEM_CONFIG_1) >> 4);
+  switch (bw) {
+    case 0: return 7.8E3;
+    case 1: return 10.4E3; 
+    case 2: return 15.6E3; 
+    case 3: return 20.8E3; 
+    case 4: return 31.25E3; 
+    case 5: return 41.7E3; 
+    case 6: return 62.5E3; 
+    case 7: return 125E3; 
+    case 8: return 250E3; 
+    case 9: return 500E3; 
+  }
+}
+
 void LoRaClass::setSignalBandwidth(long sbw)
 {
   int bw;
diff --git a/src/LoRa.h b/src/LoRa.h
index 7616ebd..d7335f1 100644
--- a/src/LoRa.h
+++ b/src/LoRa.h
@@ -27,6 +27,7 @@ public:
   int parsePacket(int size = 0);
   int packetRssi();
   float packetSnr();
+  double packetFrequencyError();
 
   // from Print
   virtual size_t write(uint8_t byte);
@@ -65,6 +66,8 @@ public:
 
   void dumpRegisters(Stream& out);
 
+  long getSignalBandwidth();
+
 private:
   void explicitHeaderMode();
   void implicitHeaderMode();