 #include <Arduino.h>
 
 #include <Gaussian.h>         // gaussian lib used for avg out AOA values.
-#include <LinkedList.h>       // linked list is also required.
+//#include <LinkedList.h>       // linked list is also required.
 #include <GaussianAverage.h>  // more info at https://github.com/ivanseidel/Gaussian
 
 // Output serial debug infomation. (comment out the following line to turn off serial debug output)

          tempBuf[0] = input[20]; //
          tempBuf[1] = input[21]; //
          tempBuf[2] = input[22]; //
          tempBuf[3] = '\0'; //
          ASI = strtol(tempBuf, NULL, 10) * 1.943; //convert to int (and from m/s to knots)

          // get ALT (4 digits) in meters
          tempBuf[0] = input[25]; //
          tempBuf[1] = input[26]; //
          tempBuf[2] = input[27]; //

#define SOLID_TONE            2
#define TONE_OFF              3
#define STARTUP_TONES_DELAY   120
#define STARTUP_TONES_DELAY2  300

uint8_t toneState = false;
unsigned char toneMode = PULSE_TONE;  // current mode of tone.  PULSE_TONE, SOLID_TONE, or TONE_OFF
