Peter P. wrote:

>> You didn't mention the country, what type of device, what frequency
>> range, whether this is commercial (for sale) or for your own use. (I
>> think this are the main parameters.)
> 
> In general, world wide.

That doesn't exist, as a regulation. It's specific for each country (or
commercial zone that have synced their regulations, like the EU). So you
have to study the regulations for each target market.

> The devices I gave as examples all have CE and some have FCC ratings. 

CE and FCC are completely different. I'm not sure how CE deals with
intentional radiators, but at least for non-intentional radiator devices,
you can self-certify CE; just make sure it's within the (non-intentional)
radiation limits (and the other limits, of course). 

For an FCC sticker, you need to hire a certified lab to make you a lab
report. (And re-hire them if you change something.)

> By this I mean, what chapter should these devices fall under ? I.e. a
> very low power device could simply radiate at any frequency it wishes as
> long as it stays under the FCC ratings ? 

I think this is true -- if it stays below the defined limits. But you have
to hire a certified lab to certify you this for an FCC number if it is an
intentional radiator. 

> I don't quite believe that someone needs a license for a 0.5uW radiator
> (the LO leakage from the average FM radio is several times that).

It sounds as if you may confuse whether an operating license is required or
whether the device itself has to be (FCC) certified. At least in the USA,
these two concepts are completely separate. With certain licenses, you may
operate non-certified gear, at rather high powers even. OTOH, there are
many (certified) products that may be operated without license. 

AFAIK there is no intentional radiator that doesn't require an FCC
certification, no matter how low the radiation. (The key element here is
not the radiation power, it's the "intention".)

Gerhard

-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist