A. TECHNICAL STANDARD FOR NARROW BAND FM

For NBFM within Region 1 a Maximum Modulation Index of 1 and an audio band restricted to 3 kHz shall be used

 

 

 

 

B. TECHNICAL STANDARDS FOR FIXED CHANNEL NBFM STATIONS

1. Traffic mode

Simplex on one channel.

2. Maximum Deviation

± 3 kHz, 12K0F3E.

3. AF response

300 - 3000 Hz, outside this band down with 12 dB/octave.

4. Pre-emphasis

+6 dB/octave in the transmitter.

5. De-emphasis

-6 dB/octave in the receiver.