diff --git a/cubesatsim/cubesatsim.h b/cubesatsim/cubesatsim.h
index cbca9c76..985aed7f 100644
--- a/cubesatsim/cubesatsim.h
+++ b/cubesatsim/cubesatsim.h
@@ -274,7 +274,7 @@ long int uptime = 1000;
 //char call[5];
 char sim_yes[10];
 
-int mode = BPSK; // SSTV;
+int mode = FSK; // BPSK; // SSTV;
 volatile int new_mode;
 int bitRate, bufLen, rsFrames, payloads, rsFrameLen, dataLen, headerLen, syncBits, syncWord, parityLen, samples, frameCnt, samplePeriod;
 float sleepTime;