no need of going >67 as the code can handle only unsigned long at this time

lib/rc-switch/RCSwitch.h

@@ -59,7 +59,7 @@
 // Number of maximum high/Low changes per packet.
 // We can handle up to (unsigned long) => 32 bit * 2 H/L changes per bit + 2 for sync
 // Для keeloq нужно увеличить RCSWITCH_MAX_CHANGES до 23+1+66*2+1=157
-#define RCSWITCH_MAX_CHANGES 157        // default 67
+#define RCSWITCH_MAX_CHANGES 67        // default 67
 
 class RCSwitch {