diff --git a/__init__.py b/__init__.py
index 91e915f..53ccd50 100755
--- a/__init__.py
+++ b/__init__.py
@@ -1 +1 @@
-#Quisk version 4.1.52-upr1
+#Quisk version 4.1.52
diff --git a/gpiokeyer.c b/gpiokeyer.c
index 52bc846..a501fff 100644
--- a/gpiokeyer.c
+++ b/gpiokeyer.c
@@ -145,6 +145,7 @@ static sem_t cw_event;
 static int cw_hangtime_msec = 250;
 
 static int running, keyer_out = 0;
+static int cw_keyer_enabled = 1;
 
 // Function prototypes
 
@@ -217,10 +218,10 @@ void clear_memory() {
 
 static void set_keyer_out(int state) {
     if (state && tr_switch_gpio) {
-        digitalWrite(tr_switch_gpio, 1);
+        digitalWrite(tr_switch_gpio, 1 & cw_keyer_enabled);
     }        
     keyer_out = state;
-    digitalWrite(keyer_out_gpio, keyer_out);
+    digitalWrite(keyer_out_gpio, keyer_out & cw_keyer_enabled);
 }
 
 static void* keyer_thread(void *arg) {
@@ -502,7 +503,7 @@ void close_key_gpiokeyer(void)
 int is_key_down_gpiokeyer(void)
 {
     static int retval;
-    retval = keyer_out;
+    retval = keyer_out & cw_keyer_enabled;
     return retval;
 }
 
@@ -542,4 +543,9 @@ void quisk_set_gpio_keyer_strict(int flag)
     cw_keyer_spacing = (flag == 0 ? 0 : 1);
 }
 
+void quisk_set_gpio_keyer_enabled(int flag)
+{
+    cw_keyer_enabled = (flag == 0 ? 0 : 1);
+}
+
 #endif
diff --git a/quisk.c b/quisk.c
index cf9aa69..91705cc 100755
--- a/quisk.c
+++ b/quisk.c
@@ -5231,6 +5231,17 @@ static PyObject * set_gpio_keyer_strict(PyObject * self, PyObject * args)
 	Py_INCREF (Py_None);
 	return Py_None;
 }
+
+static PyObject * set_gpio_keyer_enabled(PyObject * self, PyObject * args)
+{
+	int enabled;
+
+	if (!PyArg_ParseTuple (args, "i", &enabled))
+		return NULL;
+	quisk_set_gpio_keyer_enabled(enabled);
+	Py_INCREF (Py_None);
+	return Py_None;
+}
 #endif
 
 static PyMethodDef QuiskMethods[] = {
@@ -5339,6 +5350,7 @@ static PyMethodDef QuiskMethods[] = {
 	{"set_gpio_keyer_weight", set_gpio_keyer_weight, METH_VARARGS, "Change the CW keyer symbol weight."},
 	{"set_gpio_keyer_reversed", set_gpio_keyer_reversed, METH_VARARGS, "Enabled/disable reversed paddles."},
 	{"set_gpio_keyer_strict", set_gpio_keyer_strict, METH_VARARGS, "Enable/disable strict character spacing."},
+	{"set_gpio_keyer_enabled", set_gpio_keyer_enabled, METH_VARARGS, "Enable/disable the CW keyer"},
 #endif
 	{NULL, NULL, 0, NULL}		/* Sentinel */
 };
diff --git a/quisk.h b/quisk.h
index 972064c..fd16fab 100755
--- a/quisk.h
+++ b/quisk.h
@@ -288,6 +288,7 @@ void quisk_set_gpio_keyer_speed(int);
 void quisk_set_gpio_keyer_weight(int);
 void quisk_set_gpio_keyer_reversed(int);
 void quisk_set_gpio_keyer_strict(int);
+void quisk_set_gpio_keyer_enabled(int);
 #endif
 
 // Functions supporting digital voice codecs
@@ -347,6 +348,7 @@ int import_quisk_api(void);	// used to initialize Quisk_API
 //#define quisk_set_gpio_keyer_weight	(*( void	(*) (int)			)Quisk_API[13])
 //#define quisk_set_gpio_keyer_reversed (*( void	(*) (int)			)Quisk_API[14])
 //#define quisk_set_gpio_keyer_strict	(*( void	(*) (int)			)Quisk_API[15])
+//#define quisk_set_gpio_keyer_enabled	(*( void	(*) (int)			)Quisk_API[16])
 //#endif
 
 #else
@@ -368,6 +370,7 @@ void	quisk_sample_source4(ty_sample_start, ty_sample_stop, ty_sample_read, ty_sa
 //void	quisk_set_gpio_keyer_weight(int);
 //void	quisk_set_gpio_keyer_reversed(int);
 //void	quisk_set_gpio_keyer_strict(int);
+//void	quisk_set_gpio_keyer_enabled(int);
 //#endif
 
 //#if defined(ENABLE_GPIO_KEYER)
@@ -375,7 +378,7 @@ void	quisk_sample_source4(ty_sample_start, ty_sample_stop, ty_sample_read, ty_sa
 // &quisk_sound_state, &QuiskGetConfigInt, &QuiskGetConfigDouble, &QuiskGetConfigString, &QuiskTimeSec, \
 // &QuiskSleepMicrosec, &QuiskPrintTime, &quisk_sample_source, &quisk_dvoice_freedv, &quisk_is_key_down, \
 // &quisk_sample_source4, &quisk_set_gpio_keyer_mode, &quisk_set_gpio_keyer_speed, \
-// &quisk_set_gpio_keyer_weight, &quisk_set_gpio_keyer_reversed, &quisk_set_gpio_keyer_strict \
+// &quisk_set_gpio_keyer_weight, &quisk_set_gpio_keyer_reversed, &quisk_set_gpio_keyer_strict, &quisk_set_gpio_keyer_enabled \
 // }
 //#else
 #define QUISK_API_INIT	{ \