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Solandri wrote, at
<a class="moz-txt-link-freetext" href="http://tech.slashdot.org/comments.pl?sid=8141531&cid=50686089">http://tech.slashdot.org/comments.pl?sid=8141531&cid=50686089</a><br>
<blockquote type="cite">
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charset=windows-1252">
<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; orphans: auto; text-align: left; text-indent: 0px;
text-transform: none; white-space: normal; widows: 1;
word-spacing: 0px; -webkit-text-stroke-width: 0px; display:
inline !important; float: none; 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; orphans: auto; text-align: left; text-indent: 0px;
text-transform: none; white-space: normal; widows: 1;
word-spacing: 0px; -webkit-text-stroke-width: 0px; display:
inline !important; float: none; 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 class="Apple-converted-space"> </span></span><br
style="box-sizing: border-box; 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; orphans: auto;
text-align: left; text-indent: 0px; text-transform: none;
white-space: normal; widows: 1; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color: rgb(255, 255,
255);">
<br style="box-sizing: border-box; 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; orphans:
auto; text-align: left; text-indent: 0px; text-transform: none;
white-space: normal; widows: 1; word-spacing: 0px;
-webkit-text-stroke-width: 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; orphans: auto; text-align: left; text-indent: 0px;
text-transform: none; white-space: normal; widows: 1;
word-spacing: 0px; -webkit-text-stroke-width: 0px; display:
inline !important; float: none; background-color: rgb(255, 255,
255);">Several airports use<span class="Apple-converted-space"> </span></span><a
href="https://en.wikipedia.org/wiki/Terminal_Doppler_Weather_Radar"
title="wikipedia.org" style="box-sizing: border-box; margin:
0px; padding: 0px; color: rgb(0, 47, 47); text-decoration:
underline; cursor: pointer; font-family: Arial, sans-serif;
font-size: 13px; font-style: normal; font-variant: normal;
font-weight: normal; letter-spacing: normal; line-height:
19.5px; orphans: auto; text-align: left; text-indent: 0px;
text-transform: none; white-space: normal; widows: 1;
word-spacing: 0px; -webkit-text-stroke-width: 0px;
background-color: rgb(255, 255, 255);">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; orphans: auto; text-align: left;
text-indent: 0px; text-transform: none; white-space: normal;
widows: 1; word-spacing: 0px; -webkit-text-stroke-width: 0px;
display: inline !important; float: none; background-color:
rgb(255, 255, 255);"><span class="Apple-converted-space"> </span>[wikipedia.org]
for high-resolution maps of storms, rainfall, and most
importantly (for airports)<span class="Apple-converted-space"> </span></span><a
href="https://en.wikipedia.org/wiki/Microburst"
title="wikipedia.org" style="box-sizing: border-box; margin:
0px; padding: 0px; color: rgb(0, 47, 47); text-decoration:
underline; cursor: pointer; font-family: Arial, sans-serif;
font-size: 13px; font-style: normal; font-variant: normal;
font-weight: normal; letter-spacing: normal; line-height:
19.5px; orphans: auto; text-align: left; text-indent: 0px;
text-transform: none; white-space: normal; widows: 1;
word-spacing: 0px; -webkit-text-stroke-width: 0px;
background-color: rgb(255, 255, 255);">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; orphans: auto; text-align: left; text-indent: 0px;
text-transform: none; white-space: normal; widows: 1;
word-spacing: 0px; -webkit-text-stroke-width: 0px; display:
inline !important; float: none; background-color: rgb(255, 255,
255);">[wikipedia.org]. TDWR operates at frequencies from 5.60 -
5.64 GHz. That's smack dab in the middle of the<span
class="Apple-converted-space"> </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="box-sizing: border-box; margin:
0px; padding: 0px; color: rgb(0, 47, 47); text-decoration:
underline; cursor: pointer; font-family: Arial, sans-serif;
font-size: 13px; font-style: normal; font-variant: normal;
font-weight: normal; letter-spacing: normal; line-height:
19.5px; orphans: auto; text-align: left; text-indent: 0px;
text-transform: none; white-space: normal; widows: 1;
word-spacing: 0px; -webkit-text-stroke-width: 0px;
background-color: rgb(255, 255, 255);">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; orphans: auto;
text-align: left; text-indent: 0px; text-transform: none;
white-space: normal; widows: 1; word-spacing: 0px;
-webkit-text-stroke-width: 0px; display: inline !important;
float: none; background-color: rgb(255, 255, 255);">[wikipedia.org].
You'll notice use of those specific frequencies (channels 120,
124, 128) are prohibited in the U.S. and Canada for this reason.<span
class="Apple-converted-space"> </span></span><br
style="box-sizing: border-box; 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; orphans: auto;
text-align: left; text-indent: 0px; text-transform: none;
white-space: normal; widows: 1; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color: rgb(255, 255,
255);">
<br style="box-sizing: border-box; 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; orphans:
auto; text-align: left; text-indent: 0px; text-transform: none;
white-space: normal; widows: 1; word-spacing: 0px;
-webkit-text-stroke-width: 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; orphans: auto; text-align: left; text-indent: 0px;
text-transform: none; white-space: normal; widows: 1;
word-spacing: 0px; -webkit-text-stroke-width: 0px; display:
inline !important; float: none; 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><nobr style="box-sizing: border-box;
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; orphans: auto; text-align: left;
text-indent: 0px; text-transform: none; widows: 1; word-spacing:
0px; -webkit-text-stroke-width: 0px; background-color: rgb(255,
255, 255);"><span class="Apple-converted-space"> </span><wbr
style="box-sizing: border-box; margin: 0px; padding: 0px;"></nobr></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?<br>
<br>
<br>
--dave<br>
<pre class="moz-signature" cols="72">--
David Collier-Brown, | Always do right. This will gratify
System Programmer and Author | some people and astonish the rest
<a class="moz-txt-link-abbreviated" href="mailto:davecb@spamcop.net">davecb@spamcop.net</a> | -- Mark Twain
</pre>
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