diff --git a/Libraries/Si446x/si446x.c b/Libraries/Si446x/si446x.c
--- a/Libraries/Si446x/si446x.c
+++ b/Libraries/Si446x/si446x.c
@@ -43,6 +43,7 @@ void si446x_init(void)
 
 	// Perform PoR (takes 20ms) and turn device on
 	si446x_reset();
+	si446x_reset();
 
     // Divide SI446x_VCXO_FREQ into its bytes; MSB first
     uint16_t x3 = SI446x_VCXO_FREQ / 0x1000000;