diff --git a/src/wspr.c b/src/wspr.c
--- a/src/wspr.c
+++ b/src/wspr.c
@@ -43,6 +43,9 @@ void wspr_init(void)
     HAL_NVIC_SetPriority(TIM1_BRK_UP_TRG_COM_IRQn, 0, 0);
     HAL_NVIC_EnableIRQ(TIM1_BRK_UP_TRG_COM_IRQn);
 
+    // Turn off ICs
+    HAL_GPIO_WritePin(OSC_NOTEN, 1);
+    HAL_GPIO_WritePin(TCXO_EN, 0);
 }
 
 // Do anything needed to prepare for sleep