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A comment on Serial Port SDR. Parent comment

Re:Serial Port SDR by lima on Thursday December 06, 2018 @12:12PM (#18619884)
And there's ISM bands as well. However, all of these unlicensed bands have strict limits.

For any of the fun stuff, you need an amateur radio license :-)

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Re:Serial Port SDR by andyidsinga on Saturday December 08, 2018 @02:40PM (#18637081)
> However, all of these unlicensed bands have strict limits.

This is absolutely key here - even in unlicensed bands one cannot just start using the spectrum without careful consideration of regulations for that spectrum.

When I was working in the 902-928 Mhz (FCC and similar) and 860s (for ETSI) for RFID we had to do a lot of work to ensure our transmit power, power ramp up, frequency hopping and listen before talk were all implemented properly and demonstrable for certification. It was not trivial.

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