09-25-2021, 04:17 AM
Mike,
10 KHz is the STEP between frequencies in our ITU zone, it is not the limit on bandwidth. Stations in a given area are assigned a minimum of 30 KHz apart. This leaves plenty of room for a 10 KHz audio bandwidth (10K either side of the carrier, a total of 20 KHz) still leaving a guard band of 10KHz. The current "mask" being used is not mandatory.
10 KHz is the STEP between frequencies in our ITU zone, it is not the limit on bandwidth. Stations in a given area are assigned a minimum of 30 KHz apart. This leaves plenty of room for a 10 KHz audio bandwidth (10K either side of the carrier, a total of 20 KHz) still leaving a guard band of 10KHz. The current "mask" being used is not mandatory.