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<H1>PMR Digital Voice</H1>
<P><FONT face=Verdana>The PMR industry is pressing ahead with VHF and UHF
systems providing Digital Voice in 6.25 kHz channel spacing using the
<STRONG>NXDN</STRONG>™ standard. <BR><BR>The digital standard being adopted by
the industry for Digital Voice seems to be NXDN™ Digital Modulation with a
number of key manufacturers already supplying products. </FONT></P>
<P><FONT face=Verdana>NXDN™ is understood to be a trademark of Icom Incorporated
and Kenwood Corporation. <BR><BR>6.25 kHz NXDN™ uses FDMA 4-level FSK modulation
using the AMBE+2 voice codec and supports both voice and data. <BR><BR>World
Intellectual Property Organisation (WIPO) - NXDN <BR></FONT><A
href="http://www.wipo.int/ipdl/en/madrid/key.jsp?KEY=915521" target=_blank><FONT
face=Verdana>http://www.wipo.int/ipdl/en/madrid/key.jsp?KEY=915521</FONT></A><BR><BR><FONT
face=Verdana>NXDN™ Forum Announces its Formal Establishment <BR></FONT><A
href="http://www.icom.co.jp/world/news/pdf/080714.pdf" target=_blank><FONT
face=Verdana>http://www.icom.co.jp/world/news/pdf/080714.pdf</FONT></A><BR><BR><FONT
face=Verdana>AAR moving forward with 6.25 kHz standard <BR></FONT><A
href="http://falconinfo.blogspot.com/2008/09/aar-chooses-nxdn-digital-standard.html"
target=_blank><FONT
face=Verdana>http://falconinfo.blogspot.com/2008/09/aar-chooses-nxdn-digital-standard.html</FONT></A><BR><BR><FONT
face=Verdana>FalconDirect <BR></FONT><A
href="http://www.falcondirect.com/hotnews.htm" target=_blank><FONT
face=Verdana>http://www.falcondirect.com/hotnews.htm</FONT></A><BR><BR><FONT
face=Verdana>Sounds of Digital Voice Formats <BR></FONT><A
href="http://www.w2sjw.com/radio_sounds.html" target=_blank><FONT
face=Verdana>http://www.w2sjw.com/radio_sounds.html</FONT></A><BR><BR><FONT
face=Verdana>Digital Mode Samples <BR></FONT><A
href="http://www.kb9ukd.com/digital/" target=_blank><FONT
face=Verdana>http://www.kb9ukd.com/digital/</FONT></A></P>
<P><FONT face=Verdana>Fonte: the Southgate News
website</FONT></P></FONT></BODY></HTML>