[GRLUG] NOT LINUX - FCC to vote on net neutrality later today.

[Michael Mol]

One more thing of note. The ISM bands (of which 900MHz, 2.4GHz and
5GHz are examples) don't require a license to transmit on, as long as
the transmissions meet certain criteria. Primarily, these criteria
revolve around not interfering with others' use of spectrum, and talk
about limits on effective power transmission. (I believe 4W effective
is the upper limit for omnidirectional broadcast.)

What that means is that while a broadcaster's license has additional
privileges and restrictions, it doesn't apply if you operate in ISM
bands with low enough power output. That's why your average kid can
operate a remote-control toy car, anyone is allowed to set up their
own wireless network--and anyone can have a home microwave. (Your
microwave operates in the 2.4GHz band, and has shielding to reduce
leakage.)

You might also notice that 900MHz, 2.4GHz and 5GHz are common labels
for in-home cordless phone sets; that's not a coincidence. 802.11a,
and the upper portion of 802.11n, sit in the 5GHz band. 802.11bg, and
the lower portion of 802.11n, sit in the 2.4GHz band.

On Wed, Dec 22, 2010 at 9:05 PM, Bob Kline <bob.kline at gmail.com> wrote:
> Interesting. Spurious broadcasts
> long been seen as serious.
> Now, how about a 25 foot pole,
> a server, and an 802.11n router,
> with an outside range of as much
> as 800 feet.  Just a $100 item.
> You've got yourself a radio station.
> Call it a micro station. The receiver can
> be any of the "Internet radios" that are
> increasingly common.
> http://www.amazon.com/Sanyo-R227-Internet-Radio-Black/dp/B001O84M3I/ref=sr_1_1?ie=UTF8&s=electronics&qid=1293069719&sr=8-1
> This one works wonderfully.  It has a
> very sensitive receiver. I see the prices
> has actually gone up, so it might be selling
> well. Despite what the feedback says, it's
> easy to set up.
> There are many other models and
> brands now.
>    -- Bob
>
> On Wed, Dec 22, 2010 at 8:54 PM, Michael Mol <mikemol at gmail.com> wrote:
>>
>> They require periodic renewal. (Mine's good for ten years) They may
>> also be revoked, such as if one breaks regulations badly enough that
>> someone cares. I gather this only happens in practice if you're
>> recurringly the source of EM transmissions that interfere with others'
>> use of spectrum, or that are prohibited and manage to jostle someone
>> into complaining.
>>
>> On Wed, Dec 22, 2010 at 7:46 PM, Bob Kline <bob.kline at gmail.com> wrote:
>> > Had?  Again, do they expire?
>>
>>
>> --
>> :wq
>>
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