Re: Choice of frequency and protocol on RF links?



larwe wrote:
linnix wrote:


It matters immensely. In the US, it's forbidden to use encryption in
the unlicensed bands, for instance.

Not quite. The use of encryption is controlled, not forbidden. I.e. you need to obtain a license to do that.

Not for high encryption. 40 bits (WiFi) or lower is fine. As long as
the government have enough computing power to break it.

As long as you can prove that you are not working for Iran and such and that you need encryption, say, for the multimedia content protection, you can have the strong security.


Check Part 15. It's illegal to use encryption on FRS links, amateur
radio links, SRD links, ...

Part 15 does not say anything about the encryption.


Since I don't work in the 2.4GHz bands much (yet) I don't know what
special loophole is there for WEP/WPA.


This is out of the scope of part 15.



Vladimir Vassilevsky

DSP and Mixed Signal Design Consultant

http://www.abvolt.com
.