 //-----
 
 // max and min frequency showable
-const ULONG MaxFreq = 60000000L;
-const ULONG MinFreq = 1000000L;
+const Frequency MaxFreq = 60000000L;
+const Frequency MinFreq = 1000000L;
 
 // number of digits in the frequency display
 const int NumFreqChars = 8;

// DEBUG word for debugging program - bitmask values
//#define DEBUG         (DEBUG_BATT + DEBUG_ACT)
#define DEBUG         0
//#define DEBUG         0xff

// Digital VFO program name & version
const char *ProgramName = "DigitalVFO";
const char *Version = "1.6";
const char *MinorVersion = ".2";
const char *Callsign = "ac3dn";

// display constants - below is for ubiquitous small HD44780 16x2 display


enum Mode VfoMode;          // VFO mode

typedef long Frequency;
Frequency VfoFrequency;     // VFO frequency (Hz)

typedef int SelOffset;
