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<DIV><FONT face=Arial size=2>This is getting off APRS, but the goal is to
effectively have NO difference in power between the base and
handset. Wireless carriers use high gain antennas usually
arranged in 3 branch diversity gain and hooked to a receive multicoupler to
bring the signal from the mobiles up. We also use all of our statistic
reporting tools to see whether the base is too hot (or quiet) in relation to the
mobiles and make adjustments from there. And of course the handsets all
back down their power as the base gets stronger according to parameters set at
the base (we can run the handsets a little higher or lower if
necessary).</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>--</FONT></DIV>
<DIV><FONT face=Arial size=2>Rich</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=rgilson@adelphia.net href="mailto:rgilson@adelphia.net">Ron</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=aprssig@lists.tapr.org
href="mailto:aprssig@lists.tapr.org">TAPR APRS Special Interest Group</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Thursday, March 09, 2006 7:19
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> [aprssig] Cell Range</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>Well just about the time I understood Cell
Operation, I learn some thing new. At one time Cell mobiles were only
allowed to have an antenna with max 3db gain even though there were 5 db
antennas on the market. Also, mobiles ran 3 watts while hand helds were
600 mw. I never could understand why 25 and 50 watt base stations were
used. I realize that duplexers and multi couplers have high loss at 800+
but that still does not account for the difference. In the digital
world, what is the usual power level difference between hand helds and the
bases?</FONT></DIV>
<DIV><FONT face=Arial size=2>Ron</FONT></DIV>
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