<div dir="ltr">Perhaps redundant asserts() with explicit documentation would help.<div><br></div><div>A communication channel with the FAA and wardriving airports would also help....<br><div class="gmail_extra"><br clear="all"><div><div class="gmail_signature"><div dir="ltr"><div>Thanks,</div>--MM--<br>The best way to predict the future is to create it. - Alan Kay<br><br>Privacy matters! We know from recent events that people are using our services to speak in defiance of unjust governments. We treat privacy and security as matters of life and death, because for some users, they are.</div></div></div>
<br><div class="gmail_quote">On Thu, Oct 8, 2015 at 8:18 AM, David Collier-Brown <span dir="ltr"><<a href="mailto:davec-b@rogers.com" target="_blank">davec-b@rogers.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
<div text="#000000" bgcolor="#FFFFFF">
Solandri wrote, at
<a href="http://tech.slashdot.org/comments.pl?sid=8141531&cid=50686089" target="_blank">http://tech.slashdot.org/comments.pl?sid=8141531&cid=50686089</a><br>
<blockquote type="cite">
<span style="color:rgb(0,0,0);font-family:Arial,sans-serif;font-size:13px;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:19.5px;text-align:left;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;float:none;display:inline!important;background-color:rgb(255,255,255)">So based on a few vague comments, I managed to track down
what the issue is since neither this nor the previous</span><span style="color:rgb(0,0,0);font-family:Arial,sans-serif;font-size:13px;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:19.5px;text-align:left;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;float:none;display:inline!important;background-color:rgb(255,255,255)">/. article nor the sites opposed to it (who seem to want
to portray it as a Big Evil Government conspiracy to take away
your freedom) delve into it.<span> </span></span><br style="margin:0px;padding:0px;color:rgb(0,0,0);font-family:Arial,sans-serif;font-size:13px;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:19.5px;text-align:left;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255)">
<br style="margin:0px;padding:0px;color:rgb(0,0,0);font-family:Arial,sans-serif;font-size:13px;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:19.5px;text-align:left;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255)">
<span style="color:rgb(0,0,0);font-family:Arial,sans-serif;font-size:13px;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:19.5px;text-align:left;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;float:none;display:inline!important;background-color:rgb(255,255,255)">Several airports use<span> </span></span><a href="https://en.wikipedia.org/wiki/Terminal_Doppler_Weather_Radar" title="wikipedia.org" style="margin:0px;padding:0px;color:rgb(0,47,47);text-decoration:underline;font-family:Arial,sans-serif;font-size:13px;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:19.5px;text-align:left;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255)" target="_blank">Terminal Doppler Weather
Radar</a><span style="color:rgb(0,0,0);font-family:Arial,sans-serif;font-size:13px;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:19.5px;text-align:left;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;float:none;display:inline!important;background-color:rgb(255,255,255)"><span> </span>[<a href="http://wikipedia.org" target="_blank">wikipedia.org</a>]
for high-resolution maps of storms, rainfall, and most
importantly (for airports)<span> </span></span><a href="https://en.wikipedia.org/wiki/Microburst" title="wikipedia.org" style="margin:0px;padding:0px;color:rgb(0,47,47);text-decoration:underline;font-family:Arial,sans-serif;font-size:13px;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:19.5px;text-align:left;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255)" target="_blank">microbursts</a><span style="color:rgb(0,0,0);font-family:Arial,sans-serif;font-size:13px;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:19.5px;text-align:left;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;float:none;display:inline!important;background-color:rgb(255,255,255)">[<a href="http://wikipedia.org" target="_blank">wikipedia.org</a>]. TDWR operates at frequencies from 5.60 -
5.64 GHz. That's smack dab in the middle of the<span> </span></span><a href="https://en.wikipedia.org/wiki/List_of_WLAN_channels#5.C2.A0GHz_.28802.11a.2Fh.2Fj.2Fn.2Fac.29.5B16.5D" title="wikipedia.org" style="margin:0px;padding:0px;color:rgb(0,47,47);text-decoration:underline;font-family:Arial,sans-serif;font-size:13px;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:19.5px;text-align:left;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255)" target="_blank">5 GHz band used by
802.11a, n, and ac</a><span style="color:rgb(0,0,0);font-family:Arial,sans-serif;font-size:13px;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:19.5px;text-align:left;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;float:none;display:inline!important;background-color:rgb(255,255,255)">[<a href="http://wikipedia.org" target="_blank">wikipedia.org</a>].
You'll notice use of those specific frequencies (channels 120,
124, 128) are prohibited in the U.S. and Canada for this reason.<span> </span></span><br style="margin:0px;padding:0px;color:rgb(0,0,0);font-family:Arial,sans-serif;font-size:13px;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:19.5px;text-align:left;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255)">
<br style="margin:0px;padding:0px;color:rgb(0,0,0);font-family:Arial,sans-serif;font-size:13px;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:19.5px;text-align:left;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255)">
<span style="color:rgb(0,0,0);font-family:Arial,sans-serif;font-size:13px;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:19.5px;text-align:left;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;float:none;display:inline!important;background-color:rgb(255,255,255)">Based on that, it sounds like the issue is that you can
buy a 5 GHz device off the shelf, then hack the firmware to
re-enable those frequencies. And the FCC is proposing this
action because people have been doing exactly that and the FCC
has received reports from the airports of such interference on
those frequencies.</span><u></u><span> </span><u></u></blockquote>
<br>
If this is correct, it argues for various of our proposals and opens
up some new questions...<br>
- is it a vendor that's scewed it up?<br>
- was there a bad DD-WRT athe solution is enforcement... anyone<br>
t any time?<span class=""><br>
<br>
<br>
--dave<br>
<pre cols="72">--
David Collier-Brown, | Always do right. This will gratify
System Programmer and Author | some people and astonish the rest
<a href="mailto:davecb@spamcop.net" target="_blank">davecb@spamcop.net</a> | -- Mark Twain
</pre>
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