Page410 of 544 NTAG26XM FR card
553-3011-100 Standard14.00 January 2002
Signaling levels

MF signaling uses pairs of frequencies to represent digits.

The following table lists the frequency values used for received signals.

Table 1 30
MF frequency values
Digit Backward direction
DOD-Tx, DID-Rx
1700 Hz + 900 Hz
2700 HZ + 1100 Hz
3900 Hz + 1100 Hz
4700 Hz + 1300 Hz
5900 Hz + 1300 Hz
61100 Hz + 1300 Hz
7700 Hz + 1500 Hz
8900 Hz +1500 Hz
91100 Hz + 1500 Hz
01300 Hz + 1500 Hz
KP 1100 Hz + 1700 Hz
ST 1500 Hz + 1700 Hz
STP(ST’)900 Hz + 1700 Hz
ST2P(ST”)1300 Hz + 1700 Hz
ST3P(ST”)700 Hz + 1700 Hz