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<TITLE>FW: [MLB-WIRELESS] Cable Question</TITLE>
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<P><FONT SIZE=2>hrmmm</FONT>
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<P><FONT SIZE=2>okay then, does anyone know of a supplier in the eastern suburbs where I could grab a metre or two of LMR-400?</FONT>
<BR><FONT SIZE=2>I've rung around a few local places enquiring about connectors for LMR-600 and I found most hadn't even heard of LMR cable :\</FONT></P>
<P><FONT SIZE=2>-----Original Message-----</FONT>
<BR><FONT SIZE=2>From: Tony Langdon [<A HREF="mailto:tlangdon@atctraining.com.au">mailto:tlangdon@atctraining.com.au</A>]</FONT>
<BR><FONT SIZE=2>Sent: Tuesday, 26 February 2002 7:59</FONT>
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<P><FONT SIZE=2>> so is <A HREF="http://www.timesmicrowave.com/cgi-bin/calculate" TARGET="_blank">http://www.timesmicrowave.com/cgi-bin/calculate</A></FONT>
<BR><FONT SIZE=2>> </FONT>
<BR><FONT SIZE=2>> Attenuation (db/ 100 mtrs) 40.622</FONT>
<BR><FONT SIZE=2>> </FONT>
<BR><FONT SIZE=2>> (use as little of this as you can)</FONT>
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<P><FONT SIZE=2>There's an interesting notation on that site that will affect anyone using</FONT>
<BR><FONT SIZE=2>RG-213. It says...</FONT>
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<P><FONT SIZE=2>"The attenuation of cables with Bare Copper and Tinned Copper outer</FONT>
<BR><FONT SIZE=2>conductors can vary substantially from the theoretical value due to</FONT>
<BR><FONT SIZE=2>oxidation and therefore we recommend they not be used above 1 GHz. Note: the</FONT>
<BR><FONT SIZE=2>outer conductor of LMR cables is the aluminum tape."</FONT>
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<P><FONT SIZE=2>Conclusion: RG-213 is not really well suited to use at 2.4 GHz, and if</FONT>
<BR><FONT SIZE=2>used, should only be used indoors, as weathering will increase the risk of</FONT>
<BR><FONT SIZE=2>oxidation.</FONT>
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<P><FONT SIZE=2>LMR series cables don't have this problem.</FONT>
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