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<H1>Amateur Radio use of STANAG 5066 </H1>
<P><FONT face=Verdana>The NATO standard <STRONG>STANAG 5066</STRONG> is used
extensively for HF commercial and government data communications but to date
there has been little Amateur use. This may change with recent open-source
developments. </FONT></P>
<P><FONT face=Verdana>In a discussion about HF networking standards on the
Digital Ham Radio reflector at </FONT><A
href="http://groups.yahoo.com/group/illinoisdigitalham/" target=_blank><FONT
face=Verdana>http://groups.yahoo.com/<BR>group/illinoisdigitalham/</FONT></A><FONT
face=Verdana> Bonnie KQ6XA made reference to the "Open 5066" project.
</FONT></P>
<P><FONT face=Verdana>This project is an open source implementation of NATO NC3A
STANAG 5066 protocol stack for HF radio communications and full details can be
found at </FONT><A href="http://open5066.org/" target=_blank><FONT
face=Verdana>http://open5066.org/</FONT></A><FONT face=Verdana> </FONT></P>
<P><FONT face=Verdana>Bonnie's Email reproduced with permission: </FONT></P>
<P><FONT face=Verdana>There are several existing HF networking protocols in use,
that have already solved the collision problems. Some of them rely upon ALE
(Automatic Link Establishment) with the FED-1045 or MIL-STD 188-141B standard
protocols. ALE uses anti-collision methods, multiple channels, and channel
occupancy checking to avoid interference in multi-user HF spectrum. If one
channel is busy, it moves to another one until it finds a good one.</FONT></P>
<P><FONT face=Verdana>An example of an HF network of ham operators using ALE, is
the Ham Radio Global High Frequency Network (HFN).<BR>It uses global standards
adapted to ham radio- click here </FONT><A href="http://hflink.com/hfn"
target=_blank><FONT face=Verdana>http://hflink.com/hfn</FONT></A><FONT
face=Verdana> </FONT></P>
<P><FONT face=Verdana>The ALE system provides an interface between the physical
layer (over the air) and the first protocol layer for setting up the links, then
other physical layers and protocol layers are utilized for data transfer. It is
in daily use by hams and the majority of other services using HF in the world
today.<BR>You can get free software for it click here - </FONT><A
href="http://hflink.com/software" target=_blank><FONT
face=Verdana>http://hflink.com/software</FONT></A><FONT face=Verdana>
</FONT></P>
<P><FONT face=Verdana>The STANAG-5066 standard is an HF-IP system. There is
"Open 5066" software Sampo Kellomäki using Linux- click here - </FONT><A
href="http://open5066.org/" target=_blank><FONT
face=Verdana>http://open5066.org</FONT></A><FONT face=Verdana> </FONT></P>
<P><FONT face=Verdana>The STANAG 5066 system is widely used by other services,
with commercial software (not free) and various hardware.<BR>5066 provides the
protocol layers. The initializing lower layer and interface for it are often
provided by ALE. Various HF modem formats can be utilized. I am not aware of a
ham HF network that uses 5066 yet.</FONT></P>
<P><FONT face=Verdana><A
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<P><STRONG><EM><FONT face=Verdana>73 Bonnie KQ6XA</FONT></EM></STRONG></P>
<P><FONT face=Verdana>Copyright 2008 HFLINK</FONT></P>
<P><FONT face=Verdana>Fonte: The Southgate Amateur Radio
Club.</FONT></P></BODY></HTML>