This is a list of the #define REFCLK_* stuff.

If you want to add a new refclock let us know and we'll assign you a number.

Should this list also include the name of the party responsible for the
refclock?

LOCALCLOCK      1       /* external (e.g., lockclock) */
GPS_TRAK        2       /* TRAK 8810 GPS Receiver */
WWV_PST         3       /* PST/Traconex 1020 WWV/H */
SPECTRACOM      4       /* Spectracom (generic) Receivers */
TRUETIME        5       /* TrueTime (generic) Receivers */
IRIG_AUDIO      6       /* IRIG-B/W audio decoder */
CHU_AUDIO       7       /* CHU audio demodulator/decoder */
PARSE           8       /* generic driver (usually DCF77,GPS,MSF) */
GPS_MX4200      9       /* Magnavox MX4200 GPS */
GPS_AS2201      10      /* Austron 2201A GPS */
GPS_ARBITER     11      /* Arbiter 1088A/B/ GPS */
IRIG_TPRO       12      /* KSI/Odetics TPRO-S IRIG */
ATOM_LEITCH     13      /* Leitch CSD 5300 Master Clock */
MSF_EES         14      /* EES M201 MSF Receiver */
GPSTM_TRUE      15      /* OLD TrueTime GPS/TM-TMD Receiver */
IRIG_BANCOMM    16      /* Bancomm GPS/IRIG Interface */
GPS_DATUM       17      /* Datum Programmable Time System */
NIST_ACTS       18      /* NIST Auto Computer Time Service */
WWV_HEATH       19      /* Heath GC1000 WWV/WWVH Receiver */
GPS_NMEA        20      /* NMEA based GPS clock */
GPS_VME         21      /* TrueTime GPS-VME Interface */
ATOM_PPS        22      /* 1-PPS Clock Discipline */
PTB_ACTS        NIST_ACTS
USNO            NIST_ACTS
GPS_HP          26      /* HP 58503A Time/Frequency Receiver */
ARCRON_MSF      27      /* ARCRON MSF radio clock. */
SHM             28      /* clock attached thru shared memory */
PALISADE        29      /* Trimble Navigation Palisade GPS */
ONCORE          30      /* Motorola UT Oncore GPS */
GPS_JUPITER     31      /* Rockwell Jupiter GPS receiver */
CHRONOLOG       32      /* Chrono-log K WWVB receiver */
DUMBCLOCK       33      /* Dumb localtime clock */
ULINK           34      /* Ultralink M320 WWVB receiver */
PCF             35      /* Conrad parallel port radio clock */
WWV_AUDIO       36      /* WWV/H audio demodulator/decoder */
FG              37      /* Forum Graphic GPS */
HOPF_SERIAL     38      /* hopf DCF77/GPS serial line receiver */
HOPF_PCI        39      /* hopf DCF77/GPS PCI receiver */
JJY             40      /* JJY receiver */
TT560           41      /* TrueTime 560 IRIG-B decoder */
ZYFER           42      /* Zyfer GPStarplus receiver */
RIPENCC         43      /* RIPE NCC Trimble driver */
???????         44      Claas Hilbrecht (20020711)