diff --git a/src/main.c b/src/main.c
--- a/src/main.c
+++ b/src/main.c
@@ -10,7 +10,8 @@
 
 
 void sysclk_init(void);
-#define WSPR_DEFAULT_FREQ 14097100UL
+//#define WSPR_DEFAULT_FREQ 14097100UL
+#define WSPR_DEFAULT_FREQ 10140100UL
 #define WSPR_TONE_SPACING 146 // ~1.46 Hz
 #define WSPR_CTC 10672 // CTC value for WSPR
 
@@ -42,14 +43,18 @@ void encode_wspr(void)
 
         uint32_t freq2 = (freq * 100) + (tx_buffer[i] * tone_spacing);
         si5351_set_freq(freq2, 0, SI5351_CLK0);
+        HAL_GPIO_TogglePin(LED_BLUE);
 
           //si5351_set_freq((freq * 100) + (tx_buffer[i] * tone_spacing), 0, SI5351_CLK0);
-          HAL_Delay(300);
-          //proceed = 0;
-          //while(!proceed);
+          //HAL_Delay(300);
+          proceed = 0;
+          while(!proceed);
     }
+        si5351_output_enable(SI5351_CLK0, 0);
 }
 
+    TIM_HandleTypeDef htim1;
+
 int main(void)
 {
     HAL_Init();
@@ -62,8 +67,57 @@ int main(void)
 
     HAL_GPIO_WritePin(OSC_NOTEN, 0);
     HAL_GPIO_WritePin(TCXO_EN, 1);
+
+
+    // Start timer for WSPR
+    __TIM1_CLK_ENABLE();
+    TIM_MasterConfigTypeDef sMasterConfig;
+    TIM_BreakDeadTimeConfigTypeDef sBreakDeadTimeConfig;
+    TIM_OC_InitTypeDef sConfigOC;
+
+    htim1.Instance = TIM1;
+    htim1.Init.Prescaler = 512; // gives 64uS ticks from 8MHz ahbclk
+    htim1.Init.CounterMode = TIM_COUNTERMODE_UP;
+    htim1.Init.Period = ctc; // Count up to this value (how many 64uS ticks per symbol)
+    htim1.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
+    htim1.Init.RepetitionCounter = 0;
+    HAL_TIM_Base_Init(&htim1);
+
+    HAL_TIM_Base_Start_IT(&htim1);
+/*
+    sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
+    sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
+    HAL_TIMEx_MasterConfigSynchronization(&htim1, &sMasterConfig);
+
+    sBreakDeadTimeConfig.OffStateRunMode = TIM_OSSR_DISABLE;
+    sBreakDeadTimeConfig.OffStateIDLEMode = TIM_OSSI_DISABLE;
+    sBreakDeadTimeConfig.LockLevel = TIM_LOCKLEVEL_OFF;
+    sBreakDeadTimeConfig.DeadTime = 0;
+    sBreakDeadTimeConfig.BreakState = TIM_BREAK_DISABLE;
+    sBreakDeadTimeConfig.BreakPolarity = TIM_BREAKPOLARITY_HIGH;
+    sBreakDeadTimeConfig.AutomaticOutput = TIM_AUTOMATICOUTPUT_DISABLE;
+    HAL_TIMEx_ConfigBreakDeadTime(&htim1, &sBreakDeadTimeConfig);
+
+    sConfigOC.OCMode = TIM_OCMODE_TIMING;
+    sConfigOC.Pulse = 0;
+    sConfigOC.OCPolarity = TIM_OCPOLARITY_HIGH;
+    sConfigOC.OCNPolarity = TIM_OCNPOLARITY_HIGH;
+    sConfigOC.OCFastMode = TIM_OCFAST_DISABLE;
+    sConfigOC.OCIdleState = TIM_OCIDLESTATE_RESET;
+    sConfigOC.OCNIdleState = TIM_OCNIDLESTATE_RESET;
+    HAL_TIM_OC_ConfigChannel(&htim1, &sConfigOC, TIM_CHANNEL_1);
+*/
+ 
+    HAL_NVIC_SetPriority(TIM1_BRK_UP_TRG_COM_IRQn, 0, 0);
+    HAL_NVIC_EnableIRQ(TIM1_BRK_UP_TRG_COM_IRQn);
+
     HAL_Delay(100);
 
+
+
+
+
+
 //    MX_USART1_UART_Init();
 
     jtencode_init();
@@ -96,7 +150,7 @@ int main(void)
         
         if(HAL_GetTick() - led_timer > 100)
         {
-            //HAL_GPIO_TogglePin(LED_BLUE);
+            HAL_GPIO_TogglePin(LED_BLUE);
             led_timer = HAL_GetTick();
         }
         if(HAL_GetTick() - last_gps > 100)