diff --git a/RadioIQMixer_F32.h b/RadioIQMixer_F32.h
index e0e702a..2f06bea 100644
--- a/RadioIQMixer_F32.h
+++ b/RadioIQMixer_F32.h
@@ -1,34 +1,34 @@
 /*
  * RadioIQMixer_F32.h
- * 
+ *
  * 8 April 2020     Bob Larkin
  * With much credit to:
  * Chip Audette (OpenAudio) Feb 2017
  * and of course, to PJRC for the Teensy and Teensy Audio Library
- * 
+ *
  * This quadrature mixer block is suitable for both transmit and receive.
  *
  * A basic building block is a pair of mixers with the
- * LO  going to the mixers at the same frequency, but differing in phase 
+ * LO  going to the mixers at the same frequency, but differing in phase
  * by 90 degrees.  This provides two outputs I and Q that are offset in
  * frequency but also 90 degrees apart in phase.  The LO are included
  * in the block, but there are no post-mixing filters.
- * 
+ *
  * The frequency is set by  .frequency(float freq_Hz)
  * There is provision for varying
  * the phase between the sine and cosine oscillators.  Technically this is no
  * longer sin and cos, but that is what real hardware needs.
-* 
+*
 * The amplitudeC(a) allows balancing of I and Q channels.
- * 
+ *
  * The output levels are 0.5 times the input level.
- * 
+ *
  * Status:  Tested in doSimple==1
- *          Tested in FineFreqShift_OA.ino, T3.6 and T4.0 
- * 
+ *          Tested in FineFreqShift_OA.ino, T3.6 and T4.0
+ *
  * Inputs:  0 is signal
  * Outputs: 0 is I     1 is Q
- * 
+ *
  * Functions, available during operation:
  *   void frequency(float32_t fr)  Sets LO frequency Hz
  *   void iqmPhaseS(float32_t ps)  Sets Phase of Sine in radians
@@ -37,13 +37,14 @@
  *   void useSimple(bool s)        Faster if 1, but no phase/amplitude adjustment
  *   void setSampleRate_Hz(float32_t fs_Hz)  Allows dynamic sample rate change for this function
  *   void useTwoChannel(bool 2Ch)  Uses 2 input cannels, I & Q, if true.  Apr 2021
- * 
+ *
  * Time: T3.6 For an update of a 128 sample block, doSimple=1, 46 microseconds
  *       T4.0 For an update of a 128 sample block, doSimple=1, 20 microseconds
- * 
+ *
  * Rev Apr2021 Allowed for 2-channel I-Q input.  Defaults to 1 Channel. "real."
+ * Rev 30Jan23 Corrected setSampleRate_Hz(sr) to do so! RSL
  */
- 
+
 #ifndef _radioIQMixer_f32_h
 #define _radioIQMixer_f32_h
 
@@ -83,7 +84,7 @@ public:
         doSimple = false;
         return;
     }
-    
+
     // phaseS_C_r  is the number of radians that the cosine output leads the
     // sine output.  The default is M_PI_2 = pi/2 = 1.57079633 radians,
     // corresponding to 90.00 degrees cosine leading sine.
@@ -110,7 +111,7 @@ public:
     // complex input.  With twoChannel===true channel 1 is Q.
     void useTwoChannel(bool _2Ch) {
         twoChannel = _2Ch;
-    } 
+    }
 
      // Speed up calculations by setting phaseS_C=90deg, amplitude=1
      void useSimple(bool s) {
@@ -120,19 +121,20 @@ public:
 			amplitude_pk = 1.0f;
 	    }
         return;
-    }   
+    }
 
     void setSampleRate_Hz(float32_t fs_Hz) {
+		sample_rate_Hz = fs_Hz;   // Added 30Jan23 RSL
         // Check freq range
         if (freq > sample_rate_Hz/2.0f) freq = sample_rate_Hz/2.f;
         // update phase increment for new frequency
-        phaseIncrement = 512.0f * freq / fs_Hz;
+        phaseIncrement = 512.0f * freq / sample_rate_Hz;
     }
-      
+
     void showError(uint16_t e) {    // Serial.print errors in update()
         errorPrintIQM = e;
     }
-       
+
     virtual void update(void);
 
 private: