diff --git a/Transceiver52M/radioInterface.cpp b/Transceiver52M/radioInterface.cpp
index 1482eb6..a3c933f 100644
--- a/Transceiver52M/radioInterface.cpp
+++ b/Transceiver52M/radioInterface.cpp
@@ -215,5 +215,36 @@
     rcvCursor -= readSz;
     memmove(rcvBuffer,rcvBuffer+2*readSz,sizeof(float) * 2 * rcvCursor);
   }
-} 
-  
+}
+
+bool RadioInterface::isUnderrun()
+{
+  bool retVal = underrun;
+  underrun = false;
+
+  return retVal;
+}
+
+void RadioInterface::attach(RadioDevice *wRadio, int wRadioOversampling)
+{
+  if (!mOn) {
+    mRadio = wRadio;
+    mRadioOversampling = SAMPSPERSYM;
+  }
+}
+
+double RadioInterface::setRxGain(double dB)
+{
+  if (mRadio)
+    return mRadio->setRxGain(dB);
+  else
+    return -1;
+}
+
+double RadioInterface::getRxGain()
+{
+  if (mRadio)
+    return mRadio->getRxGain();
+  else
+    return -1;
+}
diff --git a/Transceiver52M/radioInterface.h b/Transceiver52M/radioInterface.h
index 9b5c2b1..31716b3 100644
--- a/Transceiver52M/radioInterface.h
+++ b/Transceiver52M/radioInterface.h
@@ -98,10 +98,10 @@
   int getSamplesPerSymbol() { return samplesPerSymbol;}
 
   /** check for underrun, resets underrun value */
-  bool isUnderrun() { bool retVal = underrun; underrun = false; return retVal;}
+  bool isUnderrun();
   
   /** attach an existing USRP to this interface */
-  void attach(RadioDevice *wRadio, int wRadioOversampling) {if (!mOn) {mRadio = wRadio; mRadioOversampling = SAMPSPERSYM;} }
+  void attach(RadioDevice *wRadio, int wRadioOversampling);
 
   /** return the receive FIFO */
   VectorFIFO* receiveFIFO() { return &mReceiveFIFO;}
@@ -109,19 +109,18 @@
   /** return the basestation clock */
   RadioClock* getClock(void) { return &mClock;};
 
- /** set receive gain */
-  double setRxGain(double dB) {if (mRadio) return mRadio->setRxGain(dB); else return -1;}
-
-  /** get receive gain */
-  double getRxGain(void) {if (mRadio) return mRadio->getRxGain(); else return -1;}
-
-
   /** set transmit frequency */
   bool tuneTx(double freq);
 
   /** set receive frequency */
   bool tuneRx(double freq);
 
+  /** set receive gain */
+  double setRxGain(double dB);
+
+  /** get receive gain */
+  double getRxGain(void);
+
   /** drive transmission of GSM bursts */
   void driveTransmitRadio(signalVector &radioBurst, bool zeroBurst);