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A comment on ARM mbed – An operating system for IoT devices. Parent comment

Re:ARM mbed – An operating system for IoT devices by n0rm on Wednesday October 08, 2014 @02:55PM (#8428735)
> range constrained if you are working with power constrained devices

Could you elaborate on that? Why does the narrow frequency drain power?

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Re:ARM mbed – An operating system for IoT devices by freehunter on Wednesday October 08, 2014 @03:08PM (#8428823)
Lower frequencies offer longer range, which is nice compared to 2.4Ghz. Which means that 2.4Ghz is also going to have more attenuation, so you need a higher TX power draw to account for that. Basically, to get the same range, 2.4Ghz is going to need more power than 900Mhz would, but 2.4Ghz offers better transmission speed.
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