[aprssig] Is DXCluster still used?

Andrew P. andrewemt at hotmail.com
Wed Oct 15 17:07:49 CDT 2014


Ah. Thanks for the info, Randy. I was hoping to find an RF-accessible DX cluster in my area, so I could monitor or connect to it from the Scouts' campground (where I don't have a landline Internet connection). Lets hope my mobile Internet hotspot can reach some towers from camp.

Andrew, KA2DDO -------- Original message --------
From: Randy Love <rlove31 at gmail.com>
Date:10/15/2014  16:04  (GMT-05:00)
To: TAPR APRS Mailing List <aprssig at tapr.org>
Subject: Re: [aprssig] Is DXCluster still used?

Andrew,

That status packet isn't DX in the same way as a DX cluster posts DX spots.

That packet just mean that KV3B-1 was the most distant station that was
heard directly on the frequency at whichever station generated that status
packet.

DX clusters take input from stations that are working DX stations and
contain the call and the frequency that the DX station was contacted/heard
on. It will give you an idea of what DX stations are heard and where based
on the call of the station submitting the spot.

Most DX clusters are connected to via telnet session or software these days
instead of over packet links.

Once you establish a connection, you should immediately start to see DX
Spots from all over the world. A DX Spot looks something like this:

DX de K1BI   14190.0  JA1ABC  20/9 big signal                   0750Z

the spot tells you that K1BI worked JA1ABC on 20m (at 14.190MHz) at 0750 Z.
Want to work the JA too? Just dial up the frequency, listen for him and
then call him. That's all there is to it -

It takes a little getting used to, but once you get the format, you can
interpret it ( or, in your case, probably write a java program to parse it
and make it look pretty. :) )

A list of available telnet dx clusters can be found here:
http://www.ng3k.com/misc/cluster.html


Randy
WF5X

On Wed, Oct 15, 2014 at 2:41 PM, Andrew P. <andrewemt at hotmail.com> wrote:

>  I already read that document. It talks about the views in APRSdos and how
> to configure it to handle PacketCluster messages, but it doesn't explain
> the protocol syntax of the packets themselves.
>
>
>
> -------- Original message --------
> From: Robert Bruninga <bruninga at usna.edu>
> Date:10/15/2014 14:31 (GMT-05:00)
> To: TAPR APRS Mailing List <aprssig at tapr.org>
> Subject: Re: [aprssig] Is DXCluster still used?
>
>  The original APRSdos had DX cluster modes in it .
>
>
>
> See http://aprs.org/APRS-docs/DXCLUSTR.TXT
>
>
>
> There might be something useful in there.
>
>
>
> bob
>
>
>
>
>
> *From:* aprssig-bounces at tapr.org [mailto:aprssig-bounces at tapr.org] *On
> Behalf Of *Andrew P.
> *Sent:* Wednesday, October 15, 2014 2:15 PM
> *To:* TAPR APRS Mailing List
> *Subject:* [aprssig] Is DXCluster still used?
>
>
>
> If so, where can one find the radio protocol specification for it? I'm
> trying to get ready to support the Boy Scouts' Jamboree On The Air, and
> would like to have a way of finding them some "good" stations to talk to
> (not being an experienced HF DXer myself). So I can use all the help I can
> get.
>
>
>
> I can see APRS packets that look like
>
>
>
> >151803zDX: KV3B-2 14mi 313° 18:01 3857.05N 07652.41W
>
>
>
> but how do I interpret this? Which station is the DX, and what frequency
> are they on?
>
>
>
> Are there other packet format within APRS for DXcluster reports? Are other
> non-APRS packet protocols for DXcluster documented anywhere?
>
>
>
> Thanks in advance.
>
>
>
> Andrew, KA2DDO
>
> _______________________________________________
> aprssig mailing list
> aprssig at tapr.org
> http://www.tapr.org/mailman/listinfo/aprssig
>
>
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