diff --git a/src/modules/SX1272.cpp b/src/modules/SX1272.cpp
index cd661c2a..69351868 100644
--- a/src/modules/SX1272.cpp
+++ b/src/modules/SX1272.cpp
@@ -6,7 +6,7 @@ SX1272::SX1272(Module* mod) : SX127x(mod) {
 
 uint8_t SX1272::begin(float freq, float bw, uint8_t sf, uint8_t cr, uint8_t syncWord, int8_t power) {
   // execute common part
-  uint8_t state = SX127x::begin(syncWord);
+  uint8_t state = SX127x::begin(SX1272_CHIP_VERSION, syncWord);
   if(state != ERR_NONE) {
     return(state);
   }
@@ -52,12 +52,8 @@ uint8_t SX1272::setFrequency(float freq) {
     return(ERR_INVALID_FREQUENCY);
   }
   
-  // set frequency and if successful, save the new setting
-  uint8_t state = SX1272::setFrequencyRaw(freq);
-  if(state == ERR_NONE) {
-    SX127x::_freq = freq;
-  }
-  return(state);
+  // set frequency
+  return(SX1272::setFrequencyRaw(freq));
 }
 
 uint8_t SX1272::setBandwidth(float bw) {
@@ -179,11 +175,6 @@ uint8_t SX1272::setOutputPower(int8_t power) {
     state |= _mod->SPIsetRegValue(SX1272_REG_PA_DAC, SX127X_PA_BOOST_ON, 2, 0);
   }
   
-  // configuration successful, save new setting
-  if(state == ERR_NONE) {
-    _power = power;
-  }
-  
   return(state);
 }
 
diff --git a/src/modules/SX1272.h b/src/modules/SX1272.h
index 0be49742..4be44d3c 100644
--- a/src/modules/SX1272.h
+++ b/src/modules/SX1272.h
@@ -43,6 +43,9 @@
 #define SX1272_AGC_AUTO_OFF                           0b00000000  //  2     2     LNA gain set by REG_LNA
 #define SX1272_AGC_AUTO_ON                            0b00000100  //  2     2     LNA gain set by internal AGC loop
 
+//SX127X_REG_VERSION
+#define SX1272_CHIP_VERSION                           0x22
+
 class SX1272: public SX127x {
   public:
     // constructor
diff --git a/src/modules/SX1276.cpp b/src/modules/SX1276.cpp
index 71399fcc..f442f31a 100644
--- a/src/modules/SX1276.cpp
+++ b/src/modules/SX1276.cpp
@@ -10,10 +10,6 @@ uint8_t SX1276::setFrequency(float freq) {
     return(ERR_INVALID_FREQUENCY);
   }
   
-  // set frequency and if successful, save the new setting
-  uint8_t state = SX1278::setFrequencyRaw(freq);
-  if(state == ERR_NONE) {
-    SX127x::_freq = freq;
-  }
-  return(state);
+  // set frequency
+  return(SX1278::setFrequencyRaw(freq));
 }
diff --git a/src/modules/SX1277.cpp b/src/modules/SX1277.cpp
index de10bfe6..faa63b04 100644
--- a/src/modules/SX1277.cpp
+++ b/src/modules/SX1277.cpp
@@ -11,11 +11,7 @@ uint8_t SX1277::setFrequency(float freq) {
   }
   
   // set frequency and if successful, save the new setting
-  uint8_t state = SX1278::setFrequencyRaw(freq);
-  if(state == ERR_NONE) {
-    SX127x::_freq = freq;
-  }
-  return(state);
+  return(SX1278::setFrequencyRaw(freq));
 }
 
 uint8_t SX1277::setSpreadingFactor(uint8_t sf) {
diff --git a/src/modules/SX1278.cpp b/src/modules/SX1278.cpp
index 07f6c6ca..5d5823f8 100644
--- a/src/modules/SX1278.cpp
+++ b/src/modules/SX1278.cpp
@@ -6,7 +6,7 @@ SX1278::SX1278(Module* mod) : SX127x(mod) {
 
 uint8_t SX1278::begin(float freq, float bw, uint8_t sf, uint8_t cr, uint8_t syncWord, int8_t power) {
   // execute common part
-  uint8_t state = SX127x::begin(syncWord);
+  uint8_t state = SX127x::begin(SX1278_CHIP_VERSION, syncWord);
   if(state != ERR_NONE) {
     return(state);
   }
@@ -52,12 +52,8 @@ uint8_t SX1278::setFrequency(float freq) {
     return(ERR_INVALID_FREQUENCY);
   }
   
-  // set frequency and if successful, save the new setting
-  uint8_t state = SX1278::setFrequencyRaw(freq);
-  if(state == ERR_NONE) {
-    SX127x::_freq = freq;
-  }
-  return(state);
+  // set frequency
+  return(SX1278::setFrequencyRaw(freq));
 }
 
 uint8_t SX1278::setBandwidth(float bw) {
@@ -190,11 +186,6 @@ uint8_t SX1278::setOutputPower(int8_t power) {
     state |= _mod->SPIsetRegValue(SX1278_REG_PA_DAC, SX127X_PA_BOOST_ON, 2, 0);
   }
   
-  // configuration successful, save new setting
-  if(state == ERR_NONE) {
-    _power = power;
-  }
-  
   return(state);
 }
 
diff --git a/src/modules/SX1278.h b/src/modules/SX1278.h
index 31e4f2fd..b8f0bf4a 100644
--- a/src/modules/SX1278.h
+++ b/src/modules/SX1278.h
@@ -61,6 +61,9 @@
 #define SX1278_AGC_AUTO_OFF                           0b00000000  //  2     2     LNA gain set by REG_LNA
 #define SX1278_AGC_AUTO_ON                            0b00000100  //  2     2     LNA gain set by internal AGC loop
 
+//SX127X_REG_VERSION
+#define SX1278_CHIP_VERSION                           0x12
+
 class SX1278: public SX127x {
   public:
     // constructor
diff --git a/src/modules/SX1279.cpp b/src/modules/SX1279.cpp
index aa43371e..d2c95403 100644
--- a/src/modules/SX1279.cpp
+++ b/src/modules/SX1279.cpp
@@ -10,10 +10,6 @@ uint8_t SX1279::setFrequency(float freq) {
     return(ERR_INVALID_FREQUENCY);
   }
   
-  // set frequency and if successful, save the new setting
-  uint8_t state = SX1278::setFrequencyRaw(freq);
-  if(state == ERR_NONE) {
-    SX127x::_freq = freq;
-  }
-  return(state);
+  // set frequency
+  return(SX1278::setFrequencyRaw(freq));
 }
diff --git a/src/modules/SX127x.cpp b/src/modules/SX127x.cpp
index 9dcf72e2..e35f129a 100644
--- a/src/modules/SX127x.cpp
+++ b/src/modules/SX127x.cpp
@@ -4,7 +4,7 @@ SX127x::SX127x(Module* mod) {
   _mod = mod;
 }
 
-uint8_t SX127x::begin(uint8_t syncWord) {
+uint8_t SX127x::begin(uint8_t chipVersion, uint8_t syncWord) {
   // set module properties
   _mod->init(USE_SPI, INT_BOTH);
   
@@ -13,7 +13,7 @@ uint8_t SX127x::begin(uint8_t syncWord) {
   bool flagFound = false;
   while((i < 10) && !flagFound) {
     uint8_t version = _mod->SPIreadRegister(SX127X_REG_VERSION);
-    if(version == 0x12) {
+    if(version == chipVersion) {
       flagFound = true;
     } else {
       #ifdef KITELIB_DEBUG
@@ -228,13 +228,8 @@ uint8_t SX127x::setSyncWord(uint8_t syncWord) {
   // set mode to standby
   setMode(SX127X_STANDBY);
   
-  // write register
-  uint8_t state = _mod->SPIsetRegValue(SX127X_REG_SYNC_WORD, syncWord);
-  if(state == ERR_NONE) {
-    _syncWord = syncWord;
-  }
-  
-  return(state);
+  // write register 
+  return(_mod->SPIsetRegValue(SX127X_REG_SYNC_WORD, syncWord));
 }
 
 uint8_t SX127x::setFrequencyRaw(float newFreq) {
diff --git a/src/modules/SX127x.h b/src/modules/SX127x.h
index 5bd4bc2e..7318311e 100644
--- a/src/modules/SX127x.h
+++ b/src/modules/SX127x.h
@@ -173,7 +173,7 @@ class SX127x {
     float lastPacketSNR;
     
     // basic methods
-    uint8_t begin(uint8_t syncWord);
+    uint8_t begin(uint8_t chipVersion, uint8_t syncWord);
     uint8_t transmit(uint8_t* data, size_t len);
     uint8_t transmit(const char* str);
     uint8_t transmit(String& str);
@@ -189,12 +189,9 @@ class SX127x {
   protected:
     Module* _mod;
     
-    float _freq;
     float _bw;
     uint8_t _sf;
     uint8_t _cr;
-    uint8_t _syncWord;
-    int8_t _power;
     
     uint8_t tx(char* data, uint8_t length);
     uint8_t rxSingle(char* data, uint8_t* length);