[Cryptography] Tempest and limits on receiving

mok-kong shen mok-kong.shen at t-online.de
Sat Apr 8 15:38:51 EDT 2017


Am 05.04.2017 um 18:28 schrieb Bob Wilson:
> Maybe I did not make my intent clear: I posted a comment that was 
> intended to address the issue of whether the US put restrictions on 
> receiving, as distinct from forms of transmission. Several posters had 
> implied that listening was completely free, and I just meant to point 
> out that was not so clear. Several have now emailed me to point out 
> that the examples I gave (e.g. under many circumstances receiving 
> equipment must not be capable of receiving cell 'phone transmissions) 
> did not involve Tempest, which I certainly concede, but that was not 
> what I was talking about. I have worked in "black" environments and do 
> know a bit about Tempest, but I did not mean to involve that.

US is albeit not particular in this context. To my knowledge in Germany 
radios sold on the market
can't receive stuffs transmitted in a certain frequency range that is 
reserved for the police.

M. K. Shen


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