Why no 856.7375?

[Chaos703]

Doing some programing tonight and I noticed on the database that 856.7375 is skipped on the Tulsa MOT system. ".7375" is sequentially included in 857., 858., 859., and 860., but skipped in 856.. Is this an error in the database or did they just skip that number. If the later is correct, anyone know why?

 

[Freqed]

Actually Tulsa's site (KNJH431) is only 28 channels. The two that are assigned to another callsign and are conventional is (856.7375) which was used by TPD and has been both digital and analog. (857.7375) is used by TFD for the "DROP" signal to all the stations. It sounds like data churping and that is the data being sent to their printers and opening their garage doors during calls. Both frequencies are listed under the callsign (WPRI776) Just thought I would comment...Thanks

that comes from this thread:
http://www.radioreference.com/forums/showthread.php?t=27371