diff --git a/Multiprotocol/GD00X_nrf24l01.ino b/Multiprotocol/GD00X_nrf24l01.ino
index d4f7f7b..9c8c49d 100644
--- a/Multiprotocol/GD00X_nrf24l01.ino
+++ b/Multiprotocol/GD00X_nrf24l01.ino
@@ -16,7 +16,7 @@ Multiprotocol is distributed in the hope that it will be useful,
 
 #if defined(GD00X_NRF24L01_INO)
 
-#include "iface_xn297l.h"
+#include "iface_nrf250k.h"
 
 //#define FORCE_GD00X_ORIGINAL_ID
 
diff --git a/Multiprotocol/KF606_nrf24l01.ino b/Multiprotocol/KF606_nrf24l01.ino
index e50d6a4..290f444 100644
--- a/Multiprotocol/KF606_nrf24l01.ino
+++ b/Multiprotocol/KF606_nrf24l01.ino
@@ -16,7 +16,7 @@ Multiprotocol is distributed in the hope that it will be useful,
 
 #if defined(KF606_NRF24L01_INO)
 
-#include "iface_xn297l.h"
+#include "iface_nrf250k.h"
 
 //#define FORCE_KF606_ORIGINAL_ID
 
diff --git a/Multiprotocol/MJXQ_nrf24l01.ino b/Multiprotocol/MJXQ_nrf24l01.ino
index 3db83c0..04c0a07 100644
--- a/Multiprotocol/MJXQ_nrf24l01.ino
+++ b/Multiprotocol/MJXQ_nrf24l01.ino
@@ -18,7 +18,7 @@
 #if defined(MJXQ_NRF24L01_INO)
 
 #include "iface_nrf24l01.h"
-#include "iface_xn297l.h"
+#include "iface_nrf250k.h"
 
 #define MJXQ_BIND_COUNT		150
 #define MJXQ_PACKET_PERIOD	4000  // Timeout for callback in uSec
diff --git a/Multiprotocol/Multiprotocol.h b/Multiprotocol/Multiprotocol.h
index 443d53f..d13ce1a 100644
--- a/Multiprotocol/Multiprotocol.h
+++ b/Multiprotocol/Multiprotocol.h
@@ -19,7 +19,7 @@
 #define VERSION_MAJOR		1
 #define VERSION_MINOR		3
 #define VERSION_REVISION	0
-#define VERSION_PATCH_LEVEL	68
+#define VERSION_PATCH_LEVEL	69
 
 //******************
 // Protocols
diff --git a/Multiprotocol/XN297L_EMU.ino b/Multiprotocol/NRF250K_EMU.ino
similarity index 84%
rename from Multiprotocol/XN297L_EMU.ino
rename to Multiprotocol/NRF250K_EMU.ino
index 773d57f..6cf366d 100644
--- a/Multiprotocol/XN297L_EMU.ino
+++ b/Multiprotocol/NRF250K_EMU.ino
@@ -13,7 +13,7 @@
  along with Multiprotocol.  If not, see <http://www.gnu.org/licenses/>.
  */
 #ifdef NRF24L01_INSTALLED
-#include "iface_xn297l.h"
+#include "iface_nrf250k.h"
 
 static void __attribute__((unused)) XN297L_Init()
 {
@@ -350,4 +350,87 @@ static void __attribute__((unused)) XN297L_SetFreqOffset()
 		}
 	#endif
 }
+
+static void __attribute__((unused)) NRF250K_SetTXAddr(uint8_t* addr, uint8_t len)
+{
+	#ifdef CC2500_INSTALLED
+	if(option==0)
+	#endif
+	{//NRF
+		NRF24L01_WriteRegisterMulti(NRF24L01_10_TX_ADDR, addr, len);
+		return;
+	}
+	//CC2500
+	#ifdef CC2500_INSTALLED
+		if (len > 5) len = 5;
+		if (len < 3) len = 3;
+		xn297_addr_len = len;
+		memcpy(xn297_tx_addr, addr, len);
+	#endif
+}
+
+static void __attribute__((unused)) NRF250K_WritePayload(uint8_t* msg, uint8_t len)
+{
+	#ifdef CC2500_INSTALLED
+	if(option==0)
+	#endif
+	{//NRF
+		NRF24L01_FlushTx();
+		NRF24L01_WriteReg(NRF24L01_07_STATUS, _BV(NRF24L01_07_TX_DS) | _BV(NRF24L01_07_RX_DR) | _BV(NRF24L01_07_MAX_RT));
+		NRF24L01_WritePayload(msg, len);
+		return;
+	}
+	//CC2500
+	#ifdef CC2500_INSTALLED
+		uint8_t buf[35];
+		uint8_t last = 0;
+		uint8_t i;
+
+		//nrf preamble
+		if(xn297_tx_addr[xn297_addr_len - 1] & 0x80)
+			buf[0]=0x55;
+		else
+			buf[0]=0xAA;
+		last++;
+		// address
+		for (i = 0; i < xn297_addr_len; ++i)
+			buf[last++] = xn297_tx_addr[xn297_addr_len - i - 1];
+		// payload
+		for (i = 0; i < len; ++i)
+			// bit-reverse bytes in packet
+			buf[last++] = msg[i];
+
+		// crc
+		uint16_t crc = 0xffff;
+		for (uint8_t i = 1; i < last; ++i)
+			crc = crc16_update(crc, buf[i], 8);
+		buf[last++] = crc >> 8;
+		buf[last++] = crc & 0xff;
+
+		// stop TX/RX
+		CC2500_Strobe(CC2500_SIDLE);
+		// flush tx FIFO
+		CC2500_Strobe(CC2500_SFTX);
+		// packet length
+		CC2500_WriteReg(CC2500_3F_TXFIFO, last);
+		// nrf packet
+		CC2500_WriteRegisterMulti(CC2500_3F_TXFIFO, buf, last);
+		// transmit
+		CC2500_Strobe(CC2500_STX);
+	#endif
+}
+
+static boolean __attribute__((unused)) NRF250K_IsPacketSent()
+{
+	#ifdef CC2500_INSTALLED
+	if(option==0)
+	#endif
+	{	//NRF
+		return NRF24L01_ReadReg(NRF24L01_07_STATUS) & _BV(NRF24L01_07_TX_DS);
+	}
+	#ifdef CC2500_INSTALLED
+	return CC2500_ReadReg(CC2500_35_MARCSTATE)==0x01;	// State is IDLE
+	#endif
+}
+
 #endif
\ No newline at end of file
diff --git a/Multiprotocol/V911S_xn297l.ino b/Multiprotocol/V911S_xn297l.ino
index 17ba4f2..6df074b 100644
--- a/Multiprotocol/V911S_xn297l.ino
+++ b/Multiprotocol/V911S_xn297l.ino
@@ -16,7 +16,7 @@
 
 #if defined(V911S_NRF24L01_INO)
 
-#include "iface_xn297l.h"
+#include "iface_nrf250k.h"
 
 //#define V911S_ORIGINAL_ID
 
diff --git a/Multiprotocol/XK_nrf24l01.ino b/Multiprotocol/XK_nrf24l01.ino
index 91797d2..d47df04 100644
--- a/Multiprotocol/XK_nrf24l01.ino
+++ b/Multiprotocol/XK_nrf24l01.ino
@@ -16,7 +16,7 @@ Multiprotocol is distributed in the hope that it will be useful,
 
 #if defined(XK_NRF24L01_INO)
 
-#include "iface_xn297l.h"
+#include "iface_nrf250k.h"
 
 //#define FORCE_XK_ORIGINAL_ID
 
diff --git a/Multiprotocol/ZSX_nrf24l01.ino b/Multiprotocol/ZSX_nrf24l01.ino
index a2c974c..23b55a0 100644
--- a/Multiprotocol/ZSX_nrf24l01.ino
+++ b/Multiprotocol/ZSX_nrf24l01.ino
@@ -16,7 +16,7 @@ Multiprotocol is distributed in the hope that it will be useful,
 
 #if defined(ZSX_NRF24L01_INO)
 
-#include "iface_xn297l.h"
+#include "iface_nrf250k.h"
 
 //#define FORCE_ZSX_ORIGINAL_ID
 
diff --git a/Multiprotocol/iface_xn297l.h b/Multiprotocol/iface_nrf250k.h
similarity index 57%
rename from Multiprotocol/iface_xn297l.h
rename to Multiprotocol/iface_nrf250k.h
index 8943a29..8b7d0a1 100644
--- a/Multiprotocol/iface_xn297l.h
+++ b/Multiprotocol/iface_nrf250k.h
@@ -1,6 +1,6 @@
-#ifndef _IFACE_XN297L_H_
+#ifndef _IFACE_NRF250K_H_
 
-#define _IFACE_XN297L_H_
+#define _IFACE_NRF250K_H_
 
 #if defined (CC2500_INSTALLED)
 	#include "iface_cc2500.h"
@@ -9,6 +9,7 @@
 	#include "iface_nrf24l01.h"
 #endif
 
+//XN297L
 static void __attribute__((unused)) XN297L_Init();
 static void __attribute__((unused)) XN297L_SetTXAddr(const uint8_t*, uint8_t);
 static void __attribute__((unused)) XN297L_WritePayload(uint8_t*, uint8_t);
@@ -19,4 +20,15 @@ static void __attribute__((unused)) XN297L_RFChannel(uint8_t);
 static void __attribute__((unused)) XN297L_SetPower();
 static void __attribute__((unused)) XN297L_SetFreqOffset();
 
+//NRF250K
+#define NRF250K_Init() XN297L_Init()
+#define NRF250K_HoppingCalib(X) XN297L_HoppingCalib(X)
+#define NRF250K_Hopping(X) XN297L_Hopping(X)
+#define NRF250K_RFChannel(X) XN297L_RFChannel(X)
+#define NRF250K_SetPower() XN297L_SetPower()
+#define NRF250K_SetFreqOffset() XN297L_SetFreqOffset()
+static void __attribute__((unused)) NRF250K_SetTXAddr(uint8_t*, uint8_t);
+static void __attribute__((unused)) NRF250K_WritePayload(uint8_t*, uint8_t);
+static boolean __attribute__((unused)) NRF250K_IsPacketSent();
+
 #endif
\ No newline at end of file