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Knowledge Base:  
Knowledge Base > FM Narrow

Page of 1
Narrow/Wide Band...it's all relative

There are two parts to this... frequencies and modulation. Frequencies : The new commercial frequencies and those assigned to Mars/Caps operations are on 2.5 kHz steps. i.e., 147.2125, 154
FM Narrow
As the airways become increasingly busy, requirements for narrow band operations have been implemented for many activities. These requirements involve output deviation and frequency step of the radio