Radio test channel selection

Question

According to the data sheet for the nRF51822 the channel range is from 2.400 - 2.483 GHz. 
 In the radio test example however, it limits the range of test channels to 2.400 - 2.480 GHz. 
 Is there a reason that the top 3 channels are not accessible? Are they reserved for some other function? 
 Thanks!

Stefan Birnir Sverrisson · Accepted Answer

Hi 
 The specification determines what the radio of the nRF51 chip is capable of. I am not certain why they have chosen 2.400 - 2.480 GHz in the example, but this is the range of the Bluetooth Low Energy frequencies, as can be seen from this image . But no, the remaining channels should be usable.

Radio test channel selection

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