Nextel Profit Up Nextel Communications Inc. Friday reported improved profit and revenue during its third quarter as it boosted its subscriber base to 14.5 million, an increase of 550,000. &lt;BR&gt;&lt;FONT face="verdana,MS Sans Serif,arial,helvetica" size="-2"\ color="#666666"&gt;&lt;B&gt;-The Washington Post&lt;/B&gt;&lt;/FONT&gt;