diff --git a/main.h b/main.h
index 166daa2e..318ccd0a 100644
--- a/main.h
+++ b/main.h
@@ -60,6 +60,9 @@
 #define OFF - 1
 #define ON 1
 #define CHECK 0
+#define DISABLED 0
+#define CARRIER 1
+#define DTMF-APRS 2
 
 uint32_t tx_freq_hz = 434900000 + FREQUENCY_OFFSET;
 uint8_t data[1024];