diff --git a/main.c b/main.c
index 86d32481..db21df4f 100644
--- a/main.c
+++ b/main.c
@@ -2319,8 +2319,8 @@ if (setting == ON) {
 void get_tlm_fc() {  // FunCube Mode telemetry generation
 
 //# define FC_EM
-//#define JY_1
-#define FC_SIM	
+#define JY_1
+//#define FC_SIM	
 	
 	/* create data, stream, and waveform buffers */
 
@@ -2343,7 +2343,9 @@ void get_tlm_fc() {  // FunCube Mode telemetry generation
 	source_bytes[0] = source_bytes[0] | ( 0x01 & (uint8_t)(sequence % 2));  // alternate last bit for RT1, RT2.
 
 	//	source_bytes[1] = 0x08 ; // extended Nayify - works per code
-	source_bytes[1] = 0x10 ; // extended JY-1 - works, no documentation
+//	source_bytes[1] = 0x10 ; // extended JY-1 - works, no documentation
+	source_bytes[1] = 0x0F ; // JY-1 EM 
+	
 	int extended = 1;
 #endif
 #ifdef FC_SIM