diff --git a/src/modules/RFM9x/RFM95.cpp b/src/modules/RFM9x/RFM95.cpp
index 2beb4b25..98dbdd1a 100644
--- a/src/modules/RFM9x/RFM95.cpp
+++ b/src/modules/RFM9x/RFM95.cpp
@@ -40,6 +40,42 @@ int16_t RFM95::begin(float freq, float bw, uint8_t sf, uint8_t cr, uint8_t syncW
   return(state);
 }
 
+int16_t RFM95::beginFSK(float freq, float br, float freqDev, float rxBw, int8_t power, uint16_t preambleLength, bool enableOOK) {
+  // execute common part
+  int16_t state = SX127x::beginFSK(RADIOLIB_RFM9X_CHIP_VERSION_OFFICIAL, br, freqDev, rxBw, preambleLength, enableOOK);
+  if(state == RADIOLIB_ERR_CHIP_NOT_FOUND) {
+    // SX127X_REG_VERSION might be set 0x12
+    state = SX127x::beginFSK(RADIOLIB_RFM9X_CHIP_VERSION_UNOFFICIAL, br, freqDev, rxBw, preambleLength, enableOOK);
+    RADIOLIB_ASSERT(state);
+  } else if(state != RADIOLIB_ERR_NONE) {
+    // some other error
+    return(state);
+  }
+  RADIOLIB_DEBUG_PRINTLN(F("M\tSX1278"));
+  RADIOLIB_DEBUG_PRINTLN(F("M\tRFM95"));
+
+  // configure settings not accessible by API
+  state = configFSK();
+  RADIOLIB_ASSERT(state);
+
+  // configure publicly accessible settings
+  state = setFrequency(freq);
+  RADIOLIB_ASSERT(state);
+
+  state = setOutputPower(power);
+  RADIOLIB_ASSERT(state);
+
+  if(enableOOK) {
+    state = setDataShapingOOK(RADIOLIB_SHAPING_NONE);
+    RADIOLIB_ASSERT(state);
+  } else {
+    state = setDataShaping(RADIOLIB_SHAPING_NONE);
+    RADIOLIB_ASSERT(state);
+  }
+
+  return(state);
+}
+
 int16_t RFM95::setFrequency(float freq) {
   RADIOLIB_CHECK_RANGE(freq, 862.0, 1020.0, RADIOLIB_ERR_INVALID_FREQUENCY);
 
diff --git a/src/modules/RFM9x/RFM96.cpp b/src/modules/RFM9x/RFM96.cpp
index 4e510a3a..c2b4230a 100644
--- a/src/modules/RFM9x/RFM96.cpp
+++ b/src/modules/RFM9x/RFM96.cpp
@@ -41,6 +41,42 @@ int16_t RFM96::begin(float freq, float bw, uint8_t sf, uint8_t cr, uint8_t syncW
   return(state);
 }
 
+int16_t RFM96::beginFSK(float freq, float br, float freqDev, float rxBw, int8_t power, uint16_t preambleLength, bool enableOOK) {
+  // execute common part
+  int16_t state = SX127x::beginFSK(RADIOLIB_RFM9X_CHIP_VERSION_OFFICIAL, br, freqDev, rxBw, preambleLength, enableOOK);
+  if(state == RADIOLIB_ERR_CHIP_NOT_FOUND) {
+    // SX127X_REG_VERSION might be set 0x12
+    state = SX127x::beginFSK(RADIOLIB_RFM9X_CHIP_VERSION_UNOFFICIAL, br, freqDev, rxBw, preambleLength, enableOOK);
+    RADIOLIB_ASSERT(state);
+  } else if(state != RADIOLIB_ERR_NONE) {
+    // some other error
+    return(state);
+  }
+  RADIOLIB_DEBUG_PRINTLN(F("M\tSX1278"));
+  RADIOLIB_DEBUG_PRINTLN(F("M\tRFM96"));
+
+  // configure settings not accessible by API
+  state = configFSK();
+  RADIOLIB_ASSERT(state);
+
+  // configure publicly accessible settings
+  state = setFrequency(freq);
+  RADIOLIB_ASSERT(state);
+
+  state = setOutputPower(power);
+  RADIOLIB_ASSERT(state);
+
+  if(enableOOK) {
+    state = setDataShapingOOK(RADIOLIB_SHAPING_NONE);
+    RADIOLIB_ASSERT(state);
+  } else {
+    state = setDataShaping(RADIOLIB_SHAPING_NONE);
+    RADIOLIB_ASSERT(state);
+  }
+
+  return(state);
+}
+
 int16_t RFM96::setFrequency(float freq) {
   RADIOLIB_CHECK_RANGE(freq, 410.0, 525.0, RADIOLIB_ERR_INVALID_FREQUENCY);