[Elecraft] K3 External Frequency Reference Questions

[David Cole]

The human body?
-- 
Thanks and 73's,
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On Fri, 2014-09-19 at 20:15 +0100, Ian White wrote:
> A rubidium frequency source contains a few milligrams of natural
> rubidium, some of which is weakly radioactive.
> 
> But there is about 5 times more radioactivity in a banana and about 1000
> times more natural radioactivity in the human body itself (in both
> cases, mostly due to natural potassium-40). 
> 
> Guess which of those three requires the hazmat sheet?
> 
> 
> 73 from Ian GM3SEK
> 
> 
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