diff --git a/BUILD.md b/BUILD.md
index 834fe63..a1af057 100644
--- a/BUILD.md
+++ b/BUILD.md
@@ -544,6 +544,8 @@ modified RF7021SE and Blue Pill STM32F103).
 
 - #define MMDVM_HS_HAT_REV12: enable this option if you have a MMDVM_HS_Hat board for RPi.
 
+- #define MMDVM_HS_DUAL_HAT_REV10: enable this option if you have a MMDVM_HS_Dual_Hat board for RPi/USB.
+
 - #define NANO_HOTSPOT: enable this option if you have a Nano hotSPOT (BI7JTA).
 
 - #define ENABLE_ADF7021: add support for ADF7021 (all boards, enabled by default).
diff --git a/Config.h b/Config.h
index cade0eb..c42ddaf 100644
--- a/Config.h
+++ b/Config.h
@@ -26,7 +26,9 @@
 #define LIBRE_KIT_ADF7021
 // 3) MMDVM_HS_Hat revisions 1.1, 1.2 and 1.4 (DB9MAT & DF2ET)
 // #define MMDVM_HS_HAT_REV12
-// 4) Nano hotSPOT (BI7JTA)
+// 4) MMDVM_HS_Dual_Hat revisions 1.0 (DB9MAT & DF2ET & DO7EN)
+// #define MMDVM_HS_DUAL_HAT_REV10
+// 5) Nano hotSPOT (BI7JTA)
 // #define NANO_HOTSPOT
 
 // Enable ADF7021 support:
diff --git a/IOArduino.cpp b/IOArduino.cpp
index d31a3c1..f63a34b 100644
--- a/IOArduino.cpp
+++ b/IOArduino.cpp
@@ -51,7 +51,7 @@
 #define PIN_PTT_LED    PB14
 #define PIN_COS_LED    PB15
 
-#elif defined(LIBRE_KIT_ADF7021) || defined(MMDVM_HS_HAT_REV12) || defined(NANO_HOTSPOT)
+#elif defined(LIBRE_KIT_ADF7021) || defined(MMDVM_HS_HAT_REV12) || defined(MMDVM_HS_DUAL_HAT_REV10) || defined(NANO_HOTSPOT)
 
 #define PIN_SCLK       PB5
 #define PIN_SREAD      PB7
@@ -75,7 +75,7 @@
 #define PIN_COS_LED    PB15
 
 #else
-#error "Either ZUMSPOT_ADF7021, LIBRE_KIT_ADF7021, MMDVM_HS_HAT_REV12 or NANO_HOTSPOT need to be defined"
+#error "Either ZUMSPOT_ADF7021, LIBRE_KIT_ADF7021, MMDVM_HS_HAT_REV12, MMDVM_HS_DUAL_HAT_REV10 or NANO_HOTSPOT need to be defined"
 #endif
 
 #elif defined(__MK20DX256__) || defined(__MK64FX512__) || defined(__MK66FX1M0__)
@@ -148,7 +148,7 @@ void CIO::Init()
 {
 #if defined (__STM32F1__)
 
-#if defined(ZUMSPOT_ADF7021) || defined(LIBRE_KIT_ADF7021) || defined(MMDVM_HS_HAT_REV12) || defined(NANO_HOTSPOT)
+#if defined(ZUMSPOT_ADF7021) || defined(LIBRE_KIT_ADF7021) || defined(MMDVM_HS_HAT_REV12) || defined(MMDVM_HS_DUAL_HAT_REV10) || defined(NANO_HOTSPOT)
   afio_cfg_debug_ports(AFIO_DEBUG_SW_ONLY);
 #endif
 
diff --git a/IOSTM.cpp b/IOSTM.cpp
index d2bd437..17e4c73 100644
--- a/IOSTM.cpp
+++ b/IOSTM.cpp
@@ -152,7 +152,7 @@
 #define PIN_COS_LED          GPIO_Pin_15
 #define PORT_COS_LED         GPIOB
 
-#elif defined(LIBRE_KIT_ADF7021) || defined(MMDVM_HS_HAT_REV12) || defined(NANO_HOTSPOT)
+#elif defined(LIBRE_KIT_ADF7021) || defined(MMDVM_HS_HAT_REV12) || defined(MMDVM_HS_DUAL_HAT_REV10) || defined(NANO_HOTSPOT)
 
 #define PIN_SCLK             GPIO_Pin_5
 #define PORT_SCLK            GPIOB
@@ -225,7 +225,7 @@
 #define PORT_COS_LED         GPIOB
 
 #else
-#error "Either PI_HAT_7021_REV_02, ZUMSPOT_ADF7021, LIBRE_KIT_ADF7021, MMDVM_HS_HAT_REV12 or NANO_HOTSPOT need to be defined"
+#error "Either PI_HAT_7021_REV_02, ZUMSPOT_ADF7021, LIBRE_KIT_ADF7021, MMDVM_HS_HAT_REV12, MMDVM_HS_DUAL_HAT_REV10 or NANO_HOTSPOT need to be defined"
 #endif
 
 extern "C" {
@@ -247,7 +247,7 @@ extern "C" {
   }
 #endif
 
-#elif defined(ZUMSPOT_ADF7021) || defined(LIBRE_KIT_ADF7021) || defined(MMDVM_HS_HAT_REV12) || defined(NANO_HOTSPOT)
+#elif defined(ZUMSPOT_ADF7021) || defined(LIBRE_KIT_ADF7021) || defined(MMDVM_HS_HAT_REV12) || defined(MMDVM_HS_DUAL_HAT_REV10) || defined(NANO_HOTSPOT)
 
 #if defined(BIDIR_DATA_PIN)
   void EXTI3_IRQHandler(void) {
@@ -284,7 +284,7 @@ void CIO::Init()
   
 #if defined(PI_HAT_7021_REV_02)
   GPIO_PinRemapConfig(GPIO_Remap_SWJ_Disable, ENABLE);
-#elif defined(ZUMSPOT_ADF7021) || defined(LIBRE_KIT_ADF7021) || defined(MMDVM_HS_HAT_REV12) || defined(NANO_HOTSPOT)
+#elif defined(ZUMSPOT_ADF7021) || defined(LIBRE_KIT_ADF7021) || defined(MMDVM_HS_HAT_REV12) || defined(MMDVM_HS_DUAL_HAT_REV10) || defined(NANO_HOTSPOT)
   GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable, ENABLE);
 #endif
 
@@ -454,7 +454,7 @@ void CIO::Init()
   EXTI_InitStructure.EXTI_Line = EXTI_Line14;
 #endif
 
-#elif defined(ZUMSPOT_ADF7021) || defined(LIBRE_KIT_ADF7021) || defined(MMDVM_HS_HAT_REV12) || defined(NANO_HOTSPOT)
+#elif defined(ZUMSPOT_ADF7021) || defined(LIBRE_KIT_ADF7021) || defined(MMDVM_HS_HAT_REV12) || defined(MMDVM_HS_DUAL_HAT_REV10) || defined(NANO_HOTSPOT)
 
 #if defined(BIDIR_DATA_PIN)
   // Connect EXTI3 Line
@@ -502,7 +502,7 @@ void CIO::startInt()
 
   NVIC_InitStructure.NVIC_IRQChannel = EXTI15_10_IRQn;
 
-#elif defined(ZUMSPOT_ADF7021) || defined(LIBRE_KIT_ADF7021) || defined(MMDVM_HS_HAT_REV12) || defined(NANO_HOTSPOT)
+#elif defined(ZUMSPOT_ADF7021) || defined(LIBRE_KIT_ADF7021) || defined(MMDVM_HS_HAT_REV12) || defined(MMDVM_HS_DUAL_HAT_REV10) || defined(NANO_HOTSPOT)
 
 #if defined(BIDIR_DATA_PIN)
   // Enable and set EXTI3 Interrupt
diff --git a/Makefile b/Makefile
index ff3c608..0fca467 100644
--- a/Makefile
+++ b/Makefile
@@ -411,6 +411,8 @@ endif
 
 mmdvm_hs_hat: zumspot-pi
 
+mmdvm_hs_dual_hat: zumspot-pi
+
 dfu:
 ifdef devser
 	$(DFU_RST) $(devser) 750
diff --git a/configs/MMDVM_HS_Dual_Hat.h b/configs/MMDVM_HS_Dual_Hat.h
new file mode 100644
index 0000000..2895e04
--- /dev/null
+++ b/configs/MMDVM_HS_Dual_Hat.h
@@ -0,0 +1,71 @@
+/*
+ *   Copyright (C) 2017,2018 by Andy Uribe CA6JAU, Florian Wolters DF2ET
+ *
+ *   This program is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation; either version 2 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program; if not, write to the Free Software
+ *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#if !defined(CONFIG_H)
+#define  CONFIG_H
+
+// Select one board (STM32F103 based boards)
+// 1) ZUMspot RPi or ZUMspot USB:
+// #define ZUMSPOT_ADF7021
+// 2) Libre Kit board or any homebrew hotspot with modified RF7021SE and Blue Pill STM32F103:
+// #define LIBRE_KIT_ADF7021
+// 3) MMDVM_HS_Hat revisions 1.1, 1.2 and 1.4 (DB9MAT & DF2ET)
+// #define MMDVM_HS_HAT_REV12
+// 4) MMDVM_HS_Dual_Hat revisions 1.0 (DB9MAT & DF2ET & DO7EN)
+#define MMDVM_HS_DUAL_HAT_REV10
+// 5) Nano hotSPOT (BI7JTA)
+// #define NANO_HOTSPOT
+
+// Enable ADF7021 support:
+#define ENABLE_ADF7021
+
+// Enable full duplex support with dual ADF7021 (valid for homebrew hotspots only):
+#define DUPLEX
+
+// TCXO of the ADF7021
+// For 14.7456 MHz:
+#define ADF7021_14_7456
+// For 12.2880 MHz:
+// #define ADF7021_12_2880
+
+// Host communication selection:
+#define STM32_USART1_HOST
+// #define STM32_USB_HOST
+
+// Enable mode detection:
+#define ENABLE_SCAN_MODE
+
+// Send RSSI value:
+#define SEND_RSSI_DATA
+
+// Enable Nextion LCD serial port repeater on USART2 (ZUMspot Libre Kit and ZUMspot RPi):
+#define SERIAL_REPEATER
+
+// Enable Nextion LCD serial port repeater on USART1 (Do not use with STM32_USART1_HOST enabled):
+// #define SERIAL_REPEATER_USART1
+
+// Enable P25 Wide modulation:
+// #define ENABLE_P25_WIDE
+
+// Disable mode LEDs blink during scan mode:
+// #define QUIET_MODE_LEDS
+
+// Enable modem debug messages
+// #define ENABLE_DEBUG
+
+#endif
diff --git a/scripts/build_fw.sh b/scripts/build_fw.sh
index e6bf9b0..6a7206c 100755
--- a/scripts/build_fw.sh
+++ b/scripts/build_fw.sh
@@ -50,6 +50,12 @@ make
 mv ~/MMDVM_HS/bin/mmdvm_f1.bin ~/MMDVM_HS/bin/mmdvm_hs_hat_fw.bin
 make clean
 
+# Building MMDVM_HS_Dual_Hat
+cp ~/MMDVM_HS/configs/MMDVM_HS_Dual_Hat.h ~/MMDVM_HS/Config.h
+make
+mv ~/MMDVM_HS/bin/mmdvm_f1.bin ~/MMDVM_HS/bin/mmdvm_hs_dual_hat_fw.bin
+make clean
+
 # Building Nano hotSPOT
 cp ~/MMDVM_HS/configs/Nano_hotSPOT.h ~/MMDVM_HS/Config.h
 make
diff --git a/scripts/install_fw_hsdualhat.sh b/scripts/install_fw_hsdualhat.sh
new file mode 100644
index 0000000..51b66b9
--- /dev/null
+++ b/scripts/install_fw_hsdualhat.sh
@@ -0,0 +1,77 @@
+#!/bin/bash
+
+#   Copyright (C) 2017,2018 by Andy Uribe CA6JAU, Florian Wolters DF2ET
+
+#   This program is free software; you can redistribute it and/or modify
+#   it under the terms of the GNU General Public License as published by
+#   the Free Software Foundation; either version 2 of the License, or
+#   (at your option) any later version.
+#
+#   This program is distributed in the hope that it will be useful,
+#   but WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#   GNU General Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License
+#   along with this program; if not, write to the Free Software
+#   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+# Configure latest version
+FW_VERSION="v1.3.3"
+
+# Change USB-serial port name ONLY in macOS
+MAC_DEV_USB_SER="/dev/cu.usbmodem1441"
+	
+# Download latest firmware for MMDVM_HS_Hat
+curl -OL https://github.com/juribeparada/MMDVM_HS/releases/download/$FW_VERSION/mmdvm_hs_dual_hat_fw.bin
+
+# Download STM32F10X_Lib (only for binary tools)
+if [ ! -d "./STM32F10X_Lib/utils" ]; then
+  git clone https://github.com/juribeparada/STM32F10X_Lib
+fi
+
+# Configure vars depending on OS
+if [ $(uname -s) == "Linux" ]; then
+	DEV_USB_SER="/dev/ttyACM0"
+	if [ $(uname -m) == "x86_64" ]; then
+		echo "Linux 64-bit detected"
+		DFU_RST="./STM32F10X_Lib/utils/linux64/upload-reset"
+		DFU_UTIL="./STM32F10X_Lib/utils/linux64/dfu-util"
+		ST_FLASH="./STM32F10X_Lib/utils/linux64/st-flash"
+		STM32FLASH="./STM32F10X_Lib/utils/linux64/stm32flash"
+	elif [ $(uname -m) == "armv7l" ]; then
+		echo "Raspberry Pi 3 detected"
+		DFU_RST="./STM32F10X_Lib/utils/rpi32/upload-reset"
+		DFU_UTIL="./STM32F10X_Lib/utils/rpi32/dfu-util"
+		ST_FLASH="./STM32F10X_Lib/utils/rpi32/st-flash"
+		STM32FLASH="./STM32F10X_Lib/utils/rpi32/stm32flash"
+	elif [ $(uname -m) == "armv6l" ]; then
+		echo "Raspberry Pi 2 or Pi Zero W detected"
+		DFU_RST="./STM32F10X_Lib/utils/rpi32/upload-reset"
+		DFU_UTIL="./STM32F10X_Lib/utils/rpi32/dfu-util"
+		ST_FLASH="./STM32F10X_Lib/utils/rpi32/st-flash"
+		STM32FLASH="./STM32F10X_Lib/utils/rpi32/stm32flash"
+	else
+		echo "Linux 32-bit detected"
+		DFU_RST="./STM32F10X_Lib/utils/linux/upload-reset"
+		DFU_UTIL="./STM32F10X_Lib/utils/linux/dfu-util"
+		ST_FLASH="./STM32F10X_Lib/utils/linux/st-flash"
+		STM32FLASH="./STM32F10X_Lib/utils/linux/stm32flash"
+	fi
+fi
+
+if [ $(uname -s) == "Darwin" ]; then
+	echo "macOS detected"
+	DEV_USB_SER=$MAC_DEV_USB_SER
+	DFU_RST="./STM32F10X_Lib/utils/macosx/upload-reset"
+	DFU_UTIL="./STM32F10X_Lib/utils/macosx/dfu-util"
+	ST_FLASH="./STM32F10X_Lib/utils/macosx/st-flash"
+	STM32FLASH="./STM32F10X_Lib/utils/macosx/stm32flash"
+fi
+
+# Stop MMDVMHost process to free serial port
+sudo killall MMDVMHost >/dev/null 2>&1
+
+# Upload the firmware
+eval sudo $STM32FLASH -v -w mmdvm_hs_dual_hat_fw.bin -g 0x0 -R -i 20,-21,21:-20,21 /dev/ttyAMA0
+
diff --git a/version.h b/version.h
index c65cc28..9d9aa6c 100644
--- a/version.h
+++ b/version.h
@@ -31,6 +31,8 @@
 #define BOARD_INFO      "ZUMspot"
 #elif defined(MMDVM_HS_HAT_REV12)
 #define BOARD_INFO      "MMDVM_HS_Hat"
+#elif defined(MMDVM_HS_DUAL_HAT_REV10)
+#define BOARD_INFO      "MMDVM_HS_Dual_Hat"
 #elif defined(NANO_HOTSPOT)
 #define BOARD_INFO      "Nano_hotSPOT"
 #else