diff --git a/examples/AFSK_SerialMessenger/AFSK_SerialMessenger.ino b/examples/AFSK_SerialMessenger/AFSK_SerialMessenger.ino
index 8ac3cc4..9f3143c 100644
--- a/examples/AFSK_SerialMessenger/AFSK_SerialMessenger.ino
+++ b/examples/AFSK_SerialMessenger/AFSK_SerialMessenger.ino
@@ -22,7 +22,7 @@
 #include <packet.h>
 #include <avr/wdt.h> 
 
-#define PWM_PIN 3
+#define MIC_PIN 3
 #define RESET_PIN A3
 #define SWITCH_PIN 2
 
@@ -37,8 +37,8 @@ int msgptr = 0;
 
 void setup() {
   // NOTE: if not using PWM out, it should be held low to avoid tx noise
-  pinMode(PWM_PIN, OUTPUT);
-  digitalWrite(PWM_PIN, LOW);
+  pinMode(MIC_PIN, OUTPUT);
+  digitalWrite(MIC_PIN, LOW);
   
   // prep the switch
   pinMode(SWITCH_PIN, INPUT_PULLUP);
diff --git a/examples/AppSerialController/AppSerialController.ino b/examples/AppSerialController/AppSerialController.ino
index aefe09e..b20a511 100644
--- a/examples/AppSerialController/AppSerialController.ino
+++ b/examples/AppSerialController/AppSerialController.ino
@@ -5,7 +5,7 @@
 
 #include <HamShield.h>
 
-#define PWM_PIN 3
+#define MIC_PIN 3
 #define RESET_PIN A3
 #define SWITCH_PIN 2
 
@@ -17,8 +17,8 @@ uint8_t pl_rx_buffer[32];
 
 void setup() {
   // NOTE: if not using PWM out, it should be held low to avoid tx noise
-  pinMode(PWM_PIN, OUTPUT);
-  digitalWrite(PWM_PIN, LOW);
+  pinMode(MIC_PIN, OUTPUT);
+  digitalWrite(MIC_PIN, LOW);
   
   // prep the switch
   pinMode(SWITCH_PIN, INPUT_PULLUP);
diff --git a/examples/CTCSS/CTCSS.ino b/examples/CTCSS/CTCSS.ino
index d2729be..0bd03c3 100644
--- a/examples/CTCSS/CTCSS.ino
+++ b/examples/CTCSS/CTCSS.ino
@@ -29,7 +29,7 @@ HamShield radio;
 #define LED_PIN 13
 #define RSSI_REPORT_RATE_MS 5000
 
-#define PWM_PIN 3
+#define MIC_PIN 3
 #define RESET_PIN A3
 #define SWITCH_PIN 2
 
@@ -43,8 +43,8 @@ unsigned long rssi_timeout;
 
 void setup() {
   // NOTE: if not using PWM out, it should be held low to avoid tx noise
-  pinMode(PWM_PIN, OUTPUT);
-  digitalWrite(PWM_PIN, LOW);
+  pinMode(MIC_PIN, OUTPUT);
+  digitalWrite(MIC_PIN, LOW);
   
   // prep the switch
   pinMode(SWITCH_PIN, INPUT_PULLUP);
diff --git a/examples/DDS/DDS.ino b/examples/DDS/DDS.ino
index 353a7d4..4bb6fd4 100644
--- a/examples/DDS/DDS.ino
+++ b/examples/DDS/DDS.ino
@@ -14,7 +14,7 @@
 #include <HamShield.h>
 #include <DDS.h>
 
-#define PWM_PIN 3
+#define MIC_PIN 3
 #define RESET_PIN A3
 #define SWITCH_PIN 2
 
@@ -26,8 +26,8 @@ DDS dds;
 
 void setup() {
   // NOTE: if not using PWM out, it should be held low to avoid tx noise
-  pinMode(PWM_PIN, OUTPUT);
-  digitalWrite(PWM_PIN, LOW);
+  pinMode(MIC_PIN, OUTPUT);
+  digitalWrite(MIC_PIN, LOW);
   
   // prep the switch
   pinMode(SWITCH_PIN, INPUT_PULLUP);
diff --git a/examples/DTMF/DTMF.ino b/examples/DTMF/DTMF.ino
index 9cc709f..824327d 100644
--- a/examples/DTMF/DTMF.ino
+++ b/examples/DTMF/DTMF.ino
@@ -20,7 +20,7 @@ HamShield radio;
 
 #define LED_PIN 13
 
-#define PWM_PIN 3
+#define MIC_PIN 3
 #define RESET_PIN A3
 #define SWITCH_PIN 2
 
@@ -28,8 +28,8 @@ uint32_t freq;
 
 void setup() {
   // NOTE: if not using PWM out, it should be held low to avoid tx noise
-  pinMode(PWM_PIN, OUTPUT);
-  digitalWrite(PWM_PIN, LOW);
+  pinMode(MIC_PIN, OUTPUT);
+  digitalWrite(MIC_PIN, LOW);
   
   // prep the switch
   pinMode(SWITCH_PIN, INPUT_PULLUP);
diff --git a/examples/FMBeacon/FMBeacon.ino b/examples/FMBeacon/FMBeacon.ino
index 89ab0c2..8f125fe 100644
--- a/examples/FMBeacon/FMBeacon.ino
+++ b/examples/FMBeacon/FMBeacon.ino
@@ -16,7 +16,7 @@
 #define DDS_REFCLK_DEFAULT 9600
 #include <HamShield.h>
 
-#define PWM_PIN 3
+#define MIC_PIN 3
 #define RESET_PIN A3
 #define SWITCH_PIN 2
 
@@ -25,8 +25,8 @@ HamShield radio;
 // Run our start up things here
 void setup() { 
   // NOTE: if not using PWM out, it should be held low to avoid tx noise
-  pinMode(PWM_PIN, OUTPUT);
-  digitalWrite(PWM_PIN, LOW);
+  pinMode(MIC_PIN, OUTPUT);
+  digitalWrite(MIC_PIN, LOW);
   
   // prep the switch
   pinMode(SWITCH_PIN, INPUT_PULLUP);
diff --git a/examples/FoxHunt/FoxHunt.ino b/examples/FoxHunt/FoxHunt.ino
index 640a62b..51e2e8c 100755
--- a/examples/FoxHunt/FoxHunt.ino
+++ b/examples/FoxHunt/FoxHunt.ino
@@ -15,7 +15,7 @@
 
 #include <HamShield.h>
 
-#define PWM_PIN 3
+#define MIC_PIN 3
 #define RESET_PIN A3
 #define SWITCH_PIN 2
 
@@ -29,8 +29,8 @@ HamShield radio;
 
 void setup() {
   // NOTE: if not using PWM out, it should be held low to avoid tx noise
-  pinMode(PWM_PIN, OUTPUT);
-  digitalWrite(PWM_PIN, LOW);
+  pinMode(MIC_PIN, OUTPUT);
+  digitalWrite(MIC_PIN, LOW);
   
   // prep the switch
   pinMode(SWITCH_PIN, INPUT_PULLUP);
@@ -79,7 +79,7 @@ void loop() {
     radio.setModeTransmit();
 
     // Generate a 600Hz tone for TRANSMITLENGTH time
-    tone(PWM_PIN, 600, TRANSMITLENGTH);
+    tone(MIC_PIN, 600, TRANSMITLENGTH);
     delay(TRANSMITLENGTH);
 
     // Identify the transmitter
diff --git a/examples/HandyTalkie/HandyTalkie.ino b/examples/HandyTalkie/HandyTalkie.ino
index 0186b1e..99bb1a3 100644
--- a/examples/HandyTalkie/HandyTalkie.ino
+++ b/examples/HandyTalkie/HandyTalkie.ino
@@ -26,7 +26,7 @@ HamShield radio;
 #define LED_PIN 13
 #define RSSI_REPORT_RATE_MS 5000
 
-#define PWM_PIN 3
+#define MIC_PIN 3
 #define RESET_PIN A3
 #define SWITCH_PIN 2
 
@@ -39,8 +39,8 @@ unsigned long rssi_timeout;
 
 void setup() {
   // NOTE: if not using PWM out, it should be held low to avoid tx noise
-  pinMode(PWM_PIN, OUTPUT);
-  digitalWrite(PWM_PIN, LOW);
+  pinMode(MIC_PIN, OUTPUT);
+  digitalWrite(MIC_PIN, LOW);
   
   // prep the switch
   pinMode(SWITCH_PIN, INPUT_PULLUP);
diff --git a/examples/KISS/KISS.ino b/examples/KISS/KISS.ino
index 3ade1b7..980f43f 100644
--- a/examples/KISS/KISS.ino
+++ b/examples/KISS/KISS.ino
@@ -35,14 +35,14 @@ DDS dds;
 AFSK afsk;
 KISS kiss(&Serial, &radio, &dds, &afsk);
 
-#define PWM_PIN 3
+#define MIC_PIN 3
 #define RESET_PIN A3
 #define SWITCH_PIN 2
 
 void setup() {
   // NOTE: if not using PWM out, it should be held low to avoid tx noise
-  pinMode(PWM_PIN, OUTPUT);
-  digitalWrite(PWM_PIN, LOW);
+  pinMode(MIC_PIN, OUTPUT);
+  digitalWrite(MIC_PIN, LOW);
   
   // prep the switch
   pinMode(SWITCH_PIN, INPUT_PULLUP);
diff --git a/examples/Morse/Morse.ino b/examples/Morse/Morse.ino
index e80738a..e3134e0 100644
--- a/examples/Morse/Morse.ino
+++ b/examples/Morse/Morse.ino
@@ -15,7 +15,7 @@
 #define DDS_REFCLK_DEFAULT 9600
 #include <HamShield.h>
 
-#define PWM_PIN 3
+#define MIC_PIN 3
 #define RESET_PIN A3
 #define SWITCH_PIN 2
 
@@ -48,8 +48,8 @@ uint8_t rx_idx;
 // Run our start up things here
 void setup() { 
   // NOTE: if not using PWM out, it should be held low to avoid tx noise
-  pinMode(PWM_PIN, OUTPUT);
-  digitalWrite(PWM_PIN, LOW);
+  pinMode(MIC_PIN, OUTPUT);
+  digitalWrite(MIC_PIN, LOW);
   
   // prep the switch
   pinMode(SWITCH_PIN, INPUT_PULLUP);
diff --git a/examples/SSTV/SSTV.ino b/examples/SSTV/SSTV.ino
index 77ec250..389e15f 100755
--- a/examples/SSTV/SSTV.ino
+++ b/examples/SSTV/SSTV.ino
@@ -10,7 +10,7 @@
  * 446MHz to receive the image output.
 */
 
-#define PWM_PIN 3
+#define MIC_PIN 3
 #define RESET_PIN A3
 #define SWITCH_PIN 2
 
@@ -28,8 +28,8 @@ int16_t rssi;
 
 void setup() {
   // NOTE: if not using PWM out, it should be held low to avoid tx noise
-  pinMode(PWM_PIN, OUTPUT);
-  digitalWrite(PWM_PIN, LOW);
+  pinMode(MIC_PIN, OUTPUT);
+  digitalWrite(MIC_PIN, LOW);
   
   // prep the switch
   pinMode(SWITCH_PIN, INPUT_PULLUP);
diff --git a/examples/SSTV_M1_Static/SSTV_M1_Static.ino b/examples/SSTV_M1_Static/SSTV_M1_Static.ino
index 5c4a03a..990674c 100644
--- a/examples/SSTV_M1_Static/SSTV_M1_Static.ino
+++ b/examples/SSTV_M1_Static/SSTV_M1_Static.ino
@@ -16,7 +16,7 @@
 #include <HamShield.h>
 #include <DDS.h>
 
-#define PWM_PIN 3
+#define MIC_PIN 3
 #define RESET_PIN A3
 #define SWITCH_PIN 2
 
@@ -32,8 +32,8 @@ ddsAccumulator_t freqTable[3];
 
 void setup() {
   // NOTE: if not using PWM out, it should be held low to avoid tx noise
-  pinMode(PWM_PIN, OUTPUT);
-  digitalWrite(PWM_PIN, LOW);
+  pinMode(MIC_PIN, OUTPUT);
+  digitalWrite(MIC_PIN, LOW);
   
   // prep the switch
   pinMode(SWITCH_PIN, INPUT_PULLUP);
diff --git a/examples/SerialTransceiver/SerialTransceiver.ino b/examples/SerialTransceiver/SerialTransceiver.ino
index 473ac6a..2ce2601 100644
--- a/examples/SerialTransceiver/SerialTransceiver.ino
+++ b/examples/SerialTransceiver/SerialTransceiver.ino
@@ -47,7 +47,7 @@ Debug Msg    @<text>;   32 character debug message
 
 #include "HamShield.h"
 
-#define PWM_PIN 3
+#define MIC_PIN 3
 #define RESET_PIN A3
 #define SWITCH_PIN 2
 
@@ -71,8 +71,8 @@ HamShield radio;
 
 void setup() {
   // NOTE: if not using PWM out, it should be held low to avoid tx noise
-  pinMode(PWM_PIN, OUTPUT);
-  digitalWrite(PWM_PIN, LOW);
+  pinMode(MIC_PIN, OUTPUT);
+  digitalWrite(MIC_PIN, LOW);
   
   // prep the switch
   pinMode(SWITCH_PIN, INPUT_PULLUP);
diff --git a/examples/SignalTest/SignalTest.ino b/examples/SignalTest/SignalTest.ino
index 9fa8530..ed6d440 100755
--- a/examples/SignalTest/SignalTest.ino
+++ b/examples/SignalTest/SignalTest.ino
@@ -25,7 +25,7 @@ char CALLSIGN[] = "1ZZ9ZZ/B";
 #include <HamShield.h>
 #include <PCM.h>
 
-#define PWM_PIN 3
+#define MIC_PIN 3
 #define RESET_PIN A3
 #define SWITCH_PIN 2
 
@@ -90,8 +90,8 @@ const unsigned char dbm[] PROGMEM = {
 
 void setup() {
   // NOTE: if not using PWM out, it should be held low to avoid tx noise
-  pinMode(PWM_PIN, OUTPUT);
-  digitalWrite(PWM_PIN, LOW);
+  pinMode(MIC_PIN, OUTPUT);
+  digitalWrite(MIC_PIN, LOW);
   
   // prep the switch
   pinMode(SWITCH_PIN, INPUT_PULLUP);
diff --git a/examples/SpeechTX/SpeechTX.ino b/examples/SpeechTX/SpeechTX.ino
index fc7bcfd..9067883 100644
--- a/examples/SpeechTX/SpeechTX.ino
+++ b/examples/SpeechTX/SpeechTX.ino
@@ -12,7 +12,7 @@
 
 #include <HamShield.h>
 
-#define PWM_PIN 3
+#define MIC_PIN 3
 #define RESET_PIN A3
 #define SWITCH_PIN 2
 
@@ -230,8 +230,8 @@ const uint8_t spYELLOW[]        PROGMEM = {0x69,0xBD,0x56,0x15,0xAC,0x67,0xE5,0x
 
 void setup() {
   // NOTE: if not using PWM out, it should be held low to avoid tx noise
-  pinMode(PWM_PIN, OUTPUT);
-  digitalWrite(PWM_PIN, HIGH);
+  pinMode(MIC_PIN, OUTPUT);
+  digitalWrite(MIC_PIN, HIGH);
   
   // prep the switch
   pinMode(SWITCH_PIN, INPUT_PULLUP);
diff --git a/src/HamShield.cpp b/src/HamShield.cpp
index 1757601..fab6e16 100644
--- a/src/HamShield.cpp
+++ b/src/HamShield.cpp
@@ -125,11 +125,11 @@ const unsigned char AFSK_space[] PROGMEM = { 140, 228, 250, 166, 53, 0, 53, 166,
  * @see A1846S_ADDRESS_AD0_LOW
  * @see A1846S_ADDRESS_AD0_HIGH
  */
-HamShield::HamShield(uint8_t cs_pin = nSEN, uint8_t clk_pin = CLK, uint8_t dat_pin = DAT, uint8_t pwm_pin = HAMSHIELD_PWM_PIN) {
-    devAddr = cs_pin;
-    hs_pwm_pin = pwm_pin;
+HamShield::HamShield(uint8_t ncs_pin = nSEN, uint8_t clk_pin = CLK, uint8_t dat_pin = DAT, uint8_t mic_pin = MIC) {
+    devAddr = ncs_pin;
+    hs_mic_pin = mic_pin;
     
-    HSsetPins(cs_pin, clk_pin, dat_pin);
+    HSsetPins(ncs_pin, clk_pin, dat_pin);
 }
 
 
@@ -1598,12 +1598,12 @@ void HamShield::morseOut(char buffer[HAMSHIELD_MORSE_BUFFER_SIZE]) {
       // We delay by 4 here, if we previously sent a symbol. Otherwise 7.
       // This could probably just be always 7 and go relatively unnoticed.
       if(prev == 0 || prev == ' '){
-        //tone(hs_pwm_pin, 6000, morse_dot_millis * 7);
-        HSnoTone(hs_pwm_pin);
+        //tone(hs_mic_pin, 6000, morse_dot_millis * 7);
+        HSnoTone(hs_mic_pin);
 		HSdelay(morse_dot_millis*7);
       } else {
-        //tone(hs_pwm_pin, 6000, morse_dot_millis * 4);
-        HSnoTone(hs_pwm_pin);
+        //tone(hs_mic_pin, 6000, morse_dot_millis * 4);
+        HSnoTone(hs_mic_pin);
 		HSdelay(morse_dot_millis*4);
       }
       continue;
@@ -1613,23 +1613,23 @@ void HamShield::morseOut(char buffer[HAMSHIELD_MORSE_BUFFER_SIZE]) {
     if(bits) { // If it is a valid character...
       do {
         if(bits & 1) {
-          HStone(hs_pwm_pin, morse_freq);//, morse_dot_millis * 3);
+          HStone(hs_mic_pin, morse_freq);//, morse_dot_millis * 3);
           HSdelay(morse_dot_millis*3);
-          HSnoTone(hs_pwm_pin);
+          HSnoTone(hs_mic_pin);
         } else {
-          HStone(hs_pwm_pin, morse_freq);//, morse_dot_millis);
+          HStone(hs_mic_pin, morse_freq);//, morse_dot_millis);
           HSdelay(morse_dot_millis);
-          HSnoTone(hs_pwm_pin);
+          HSnoTone(hs_mic_pin);
         }
-        //tone(hs_pwm_pin, 6000, morse_dot_millis);
-        HSnoTone(hs_pwm_pin);
+        //tone(hs_mic_pin, 6000, morse_dot_millis);
+        HSnoTone(hs_mic_pin);
 		HSdelay(morse_dot_millis);
         bits >>= 1; // Shift into the next symbol
       } while(bits != 1); // Wait for 1 termination to be all we have left
     }
     // End of character
-    //tone(hs_pwm_pin, 6000, morse_dot_millis * 3);
-    HSnoTone(hs_pwm_pin);
+    //tone(hs_mic_pin, 6000, morse_dot_millis * 3);
+    HSnoTone(hs_mic_pin);
 	HSdelay(morse_dot_millis * 3);
   }
   return;
@@ -1760,20 +1760,20 @@ void HamShield::SSTVTestPattern(int code) {
 /* wait for tone to complete */
 
 void HamShield::toneWait(uint16_t freq, long timer) { 
-    HStone(hs_pwm_pin,freq);//,timer);
+    HStone(hs_mic_pin,freq);//,timer);
     HSdelay(timer);
-    HSnoTone(hs_pwm_pin);
+    HSnoTone(hs_mic_pin);
 }
 
 /* wait microseconds for tone to complete */
 
 void HamShield::toneWaitU(uint16_t freq, long timer) { 
     if(freq < 16383) { 
-    HStone(hs_pwm_pin,freq);
-    HSdelayMicroseconds(timer); HSnoTone(hs_pwm_pin); return;
+    HStone(hs_mic_pin,freq);
+    HSdelayMicroseconds(timer); HSnoTone(hs_mic_pin); return;
     }
-    HStone(hs_pwm_pin,freq);
-    HSdelay(timer / 1000); HSnoTone(hs_pwm_pin); return;
+    HStone(hs_mic_pin,freq);
+    HSdelay(timer / 1000); HSnoTone(hs_mic_pin); return;
 }
 
 
diff --git a/src/HamShield.h b/src/HamShield.h
index 5cfdd7e..c7fe0eb 100644
--- a/src/HamShield.h
+++ b/src/HamShield.h
@@ -220,7 +220,7 @@
 
 class HamShield {
     public:
-		HamShield(uint8_t cs_pin = nSEN, uint8_t clk_pin = CLK, uint8_t dat_pin = DAT, uint8_t pwm_pin = HAMSHIELD_PWM_PIN);
+		HamShield(uint8_t ncs_pin = nCS, uint8_t clk_pin = CLK, uint8_t dat_pin = DAT, uint8_t mic_pin = MIC);
 
         void initialize();  // defaults to 12.5kHz
 		void initialize(bool narrowBand); // select 12.5kHz if true or 25kHz if false
@@ -496,7 +496,7 @@ class HamShield {
 		
     private:
         uint8_t devAddr;
-        uint8_t hs_pwm_pin;
+        uint8_t hs_mic_pin;
         uint16_t radio_i2c_buf[4];
 		bool tx_active;
 		bool rx_active;
diff --git a/src/HamShield_comms.cpp b/src/HamShield_comms.cpp
index 9738d37..a9ace46 100644
--- a/src/HamShield_comms.cpp
+++ b/src/HamShield_comms.cpp
@@ -8,7 +8,7 @@
 #include "Arduino.h"
 //#include "I2Cdev.h"
 
-uint8_t ncs_pin = nSEN;
+uint8_t ncs_pin = nCS;
 uint8_t clk_pin = CLK;
 uint8_t dat_pin = DAT;
 
diff --git a/src/HamShield_comms.h b/src/HamShield_comms.h
index 8993a28..43f57fc 100644
--- a/src/HamShield_comms.h
+++ b/src/HamShield_comms.h
@@ -7,10 +7,10 @@
 #include "stdint.h"
 
 #include "Arduino.h"
-#define nSEN A1 //15 //
+#define nCS A1 //15 //
 #define CLK A5 //19 //
 #define DAT A4 //18 //
-#define HAMSHIELD_PWM_PIN                 3    // Pin assignment for PWM output
+#define MIC 3    // Pin assignment for PWM output
 
 
 void HSsetPins(uint8_t ncs, uint8_t clk, uint8_t dat);