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16 <H2><A NAME="s1">1.</A> <A HREF="filtering_en.html#toc1">Introduction.</A></H2>
18 <P>The PacketCluster software written in the mid-80s by Dick Newell, AK1A, has
19 served us well. Dick has moved on though and has not supported the software
20 with updates etc. for the last 10 years. Numerous PacketCluster "clones" have
21 come and gone over the years, however there is one, called DX Spider, which
22 provides a very similar user interface to that of AK1A, allows internet
23 connections of users and node-to-node links, is actively supported by the
24 author, and best of all is freeware. FRC has started to convert several nodes
27 <P>One of the strengths of DX Spider is its very powerful and flexible DX spot
28 filtering routines. These filters are totally different from anything we
29 learned how to do with PacketCluster, and along with their power and
30 flexibility comes somewhat of a learning curve. Hence the need for this
33 <P>In the following sections, you will learn that you can filter DX spots by:</P>
39 Callsign of the spot (by state, country, zone, or specific callsign)
40 Callsign of the spotter (by state, country, zone, or specific callsign)
41 Callsign of the source node of the spot (by state, country, zone, or specific callsign)
46 <P>With a few keystrokes, you can set up a filter for the CQ WW SSB contest, for
47 example, that says that you only want to see SSB spots on the contesting bands.
48 In the ARRL contest, it is simple to exclude spots for Ws and VEs. For example,
49 the best all around one-line filter for users in the CQ WW SSB contest would be:</P>
53 accept/spots on contesthf/ssb
57 <P>This simply reads, "I want to get spots on the hf contesting bands on SSB only."</P>
59 <P>Jim Samuels, W3BG, has put together this primer which not only provides complete
60 details on the format for all the available filter commands, but also provides
61 useful examples that can be simply typed in, without the need to learn the
64 <P>I would be remiss in not thanking Charlie Carroll, K1XX, who gave a lot of
65 encouragement and mentoring, and provided some of the material in this primer.</P>
67 <P>As always, your local sysop is available to help you out, if need be. Don't
68 hesitate to contact him for assistance.</P>
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