Yup. Most routers have a small range<div>of closely spaced frequency options one</div><div>can try to avoid local interference. "6" is</div><div>the default choice. Microwave ovens are</div><div>not supposed to leak, even though the </div>
<div>power is high. Cordless phones could be</div><div>another issue.</div><div><br></div><div>There is a dual band version of 802.11n,</div><div>which tries even more ways to get the </div><div>signal through.</div><div>
<br></div><div>4W is enough power for a micro station.</div><div>I suppose the increasing range of routers</div><div>is another reason outfits like Comcast and</div><div>AT&T are looking at byte limits - people can</div>
<div>pick up a signal easily today, unless </div><div>encryption is use, and many don't bother </div><div>with it.</div><div><br></div><div>But there are possibilities here as far as</div><div>sharing a high speed link. </div>
<div><br></div><div> -- Bob</div><div><br></div><div><br></div><div><br></div><div><br><div class="gmail_quote">On Wed, Dec 22, 2010 at 9:26 PM, Michael Mol <span dir="ltr"><<a href="mailto:mikemol@gmail.com">mikemol@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">One more thing of note. The ISM bands (of which 900MHz, 2.4GHz and<br>
5GHz are examples) don't require a license to transmit on, as long as<br>
the transmissions meet certain criteria. Primarily, these criteria<br>
revolve around not interfering with others' use of spectrum, and talk<br>
about limits on effective power transmission. (I believe 4W effective<br>
is the upper limit for omnidirectional broadcast.)<br>
<br>
What that means is that while a broadcaster's license has additional<br>
privileges and restrictions, it doesn't apply if you operate in ISM<br>
bands with low enough power output. That's why your average kid can<br>
operate a remote-control toy car, anyone is allowed to set up their<br>
own wireless network--and anyone can have a home microwave. (Your<br>
microwave operates in the 2.4GHz band, and has shielding to reduce<br>
leakage.)<br>
<br>
You might also notice that 900MHz, 2.4GHz and 5GHz are common labels<br>
for in-home cordless phone sets; that's not a coincidence. 802.11a,<br>
and the upper portion of 802.11n, sit in the 5GHz band. 802.11bg, and<br>
the lower portion of 802.11n, sit in the 2.4GHz band.<br>
<div><div></div><div class="h5"><br>
On Wed, Dec 22, 2010 at 9:05 PM, Bob Kline <<a href="mailto:bob.kline@gmail.com">bob.kline@gmail.com</a>> wrote:<br>
> Interesting. Spurious broadcasts<br>
> long been seen as serious.<br>
> Now, how about a 25 foot pole,<br>
> a server, and an 802.11n router,<br>
> with an outside range of as much<br>
> as 800 feet. Just a $100 item.<br>
> You've got yourself a radio station.<br>
> Call it a micro station. The receiver can<br>
> be any of the "Internet radios" that are<br>
> increasingly common.<br>
> <a href="http://www.amazon.com/Sanyo-R227-Internet-Radio-Black/dp/B001O84M3I/ref=sr_1_1?ie=UTF8&s=electronics&qid=1293069719&sr=8-1" target="_blank">http://www.amazon.com/Sanyo-R227-Internet-Radio-Black/dp/B001O84M3I/ref=sr_1_1?ie=UTF8&s=electronics&qid=1293069719&sr=8-1</a><br>
> This one works wonderfully. It has a<br>
> very sensitive receiver. I see the prices<br>
> has actually gone up, so it might be selling<br>
> well. Despite what the feedback says, it's<br>
> easy to set up.<br>
> There are many other models and<br>
> brands now.<br>
> -- Bob<br>
><br>
> On Wed, Dec 22, 2010 at 8:54 PM, Michael Mol <<a href="mailto:mikemol@gmail.com">mikemol@gmail.com</a>> wrote:<br>
>><br>
>> They require periodic renewal. (Mine's good for ten years) They may<br>
>> also be revoked, such as if one breaks regulations badly enough that<br>
>> someone cares. I gather this only happens in practice if you're<br>
>> recurringly the source of EM transmissions that interfere with others'<br>
>> use of spectrum, or that are prohibited and manage to jostle someone<br>
>> into complaining.<br>
>><br>
>> On Wed, Dec 22, 2010 at 7:46 PM, Bob Kline <<a href="mailto:bob.kline@gmail.com">bob.kline@gmail.com</a>> wrote:<br>
>> > Had? Again, do they expire?<br>
>><br>
>><br>
>> --<br>
>> :wq<br>
>><br>
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