| JN53DV |
The station transmits at 10 MHz and 15 MHz with 90 W of power. Audio is modulated on the upper sideband, with carrier retained. Voice time announcements are made (in a male voice) every minute, with longer station identification announcements (in a female voice) each quarter hour.
The balance of each minute is filled with instrumental music.
At the end of each minute is the standard 
Immediately before the pips, during seconds 52 and 53 of each minute, the time of the following minute is transmitted in binary coded decimal form. Bits are sent using frequency shift keying between 2000 Hz (binary 0) and 2500 Hz (binary 1) at a rate of 30 milliseconds per bit (33⅓ baud). 32 bits are transmitted during second 52, and 16 additional bits during second 53, as follows:
|First segment (second 52)||Second segment (second 53)|
|:52.00||0||0||Segment identification "01"||0||:52.48||16||P1||Odd parity over bits 0–16||1||:53.00||32||1||Segment identification "10"||1|
|0||:52.54||18||8||0||:53.06||34||80||Year within century (00–99)
|:52.18||6||2||1||:52.66||22||20||Day of month (01–31)
|:52.30||10||10||0||:52.78||26||2||0||:53.30||42||4||Summer time warning
7: No change sooner than 7 days
1–6: Days remaining until time change
0: Time change today at 02:00 or 03:00
|:52.36||12||4||1||:52.84||28||4||Day of week (1–7)
Example: 7 = Sunday
|:52.39||13||2||1||:52.87||29||2||1||:53.39||45||SI1||1=Leap second at end of month||0|
|:52.42||14||1||0||:52.90||30||1||1||:53.42||46||SI2||0=Add leap, 1=subtract leap||0|
|:52.45||15||OE||1=Summer time||1||:52.93||31||P2||Odd parity over bits 17–31||1||:53.45||47||P3||Odd parity over bits 32–47||0|
The example time is 1994-05-01 at 13:26. The day is a Sunday, summer time is in effect, and will remain so for the next week. No leap second is scheduled for the end of May.
Although the time code only includes two digits of year, it is possible to deduce two bits of century using the day of week. There is still a 400-year ambiguity, as the Gregorian calendar repeats weeks every 400 years, but this is sufficient to determine which years ending in 00 are leap years.