diff --git a/ADF7021.cpp b/ADF7021.cpp
index 027050d..482cfd0 100644
--- a/ADF7021.cpp
+++ b/ADF7021.cpp
@@ -345,7 +345,11 @@ void CIO::ifConf(MMDVM_STATE modemState, bool reset)
 
       ADF7021_REG2 = (uint32_t) 0b10                       << 28;  // invert data (and RC alpha = 0.5)
       ADF7021_REG2 |= (uint32_t) (ADF7021_DEV_P25 / div2)  << 19;  // deviation
+#if defined(ENABLE_P25_WIDE)
+      ADF7021_REG2 |= (uint32_t) 0b011                     << 4;   // modulation (4FSK)
+#else
       ADF7021_REG2 |= (uint32_t) 0b111                     << 4;   // modulation (RC 4FSK)
+#endif
       break;
       
     default:
diff --git a/ADF7021.h b/ADF7021.h
index 8992ddc..b571dcf 100644
--- a/ADF7021.h
+++ b/ADF7021.h
@@ -62,7 +62,11 @@ www.analog.com/media/en/technical-documentation/data-sheets/ADF7021.pdf
 #define ADF7021_DEV_DMR          23U
 #define ADF7021_DEV_YSF_L        18U
 #define ADF7021_DEV_YSF_H        36U
+#if defined(ENABLE_P25_WIDE)
+#define ADF7021_DEV_P25          32U
+#else
 #define ADF7021_DEV_P25          22U
+#endif
 
 // TX/RX CLOCK register (REG 03)
 #define ADF7021_REG3_DSTAR       0x2A4C4193
@@ -142,7 +146,11 @@ www.analog.com/media/en/technical-documentation/data-sheets/ADF7021.pdf
 #define ADF7021_DEV_DMR          14U
 #define ADF7021_DEV_YSF_L        11U
 #define ADF7021_DEV_YSF_H        21U
+#if defined(ENABLE_P25_WIDE)
+#define ADF7021_DEV_P25          21U
+#else
 #define ADF7021_DEV_P25          14U
+#endif
 
 // TX/RX CLOCK register (REG 03)
 #define ADF7021_REG3_DSTAR       0x29EC4153
@@ -220,7 +228,7 @@ www.analog.com/media/en/technical-documentation/data-sheets/ADF7021.pdf
 #define ADF7021_SLICER_TH_DMR    57U
 #define ADF7021_SLICER_TH_YSF_L  38U
 #define ADF7021_SLICER_TH_YSF_H  75U
-#define ADF7021_SLICER_TH_P25    52U
+#define ADF7021_SLICER_TH_P25    47U
 
 #endif
 
diff --git a/Config.h b/Config.h
index 11b9714..df1c438 100644
--- a/Config.h
+++ b/Config.h
@@ -62,4 +62,7 @@
 // Enable Nextion LCD serial port repeater:
 // #define SERIAL_REPEATER
 
+// Enable P25 Wide modulation
+// #define ENABLE_P25_WIDE
+
 #endif