JN53DV

​JN53dv is the Maidenhead grid square of an experimental[1] shortwave time signal station in Italy.

[2] Audio is modulated on the upper sideband,[5] with carrier retained.

The balance of each minute is filled with instrumental music, as well as SSTV images.

[5] At the end of each minute is the standard RAI time signal, as generated by INRiM (Istituto Nazionale di Ricerca Metrologica, National Institute of Metrology Research) and broadcast intermittently on Italian radio and television stations.

Although the time code only includes two digits of year, it is possible to deduce two bits of century using the day of week.