7.5 KHz Step Size: When To Use ?
 

Hello:

Can someone please tell me under what circumstances
to set "Step-Size" for 7.5 KHz ?

e.g., do you use 7.5 every time the last 4 digits ends in 75, such as
xxx.2175 ?

How about if the last 4 digits ends in 25, such as xxx.2125 ?

Or,... ?

Thanks,
Bob