Basic specifications of the MEPT_JT mode are as follows:

1.  Transmitted message: callsign + 4-character-locator + dBm 
    Example: "iz1cqn JN35 37"

2.  Message length after lossless compression: 28 bits for callsign,
    15 for locator, 7 for power level ==> 50 bits total.

3.  Forward error correction (FEC): long-constraint convolutional 
    code, K=32, r=1/2.

4.  Number of channel symbols: nsym = (50+K-1)*2 = 162.

5.  Keying rate: 12000/8192 = 1.46 baud.  

6.  Modulation: continuous phase 4-FSK.  Tone separation 1.46 Hz.

7.  Synchronization: 162-bit pseudo-random sync vector.

8.  Data structure: each channel symbol conveys one sync bit and one
    data bit.

9.  Duration of transmission: 162*8192/12000 = 110.6 s.  

10. Transmissions start two seconds into an even UTC minute: i.e., at
    hh:00:02, hh:02:02, ...

10. Occupied bandwidth: about 6 Hz

11. Minimum S/N for reception: around -27 dB on the WSJT scale (2500
    Hz reference bandwidth).