(Araucaria) RES: [Fwd: Help Wanted - Skimmer "Reverse Beacon" NetworkGoing Operational]

Sexta Abril 4 18:26:04 BRT 2008

Alooo Eger,

Quando eu atentei pra isso, fiquei embasbacado com a ideia. É como a 
rede do NCDXF, mas muito mais capilarizada.

O receptor SDR tem problemas de ruido como os outros. Nossa ideia é 
organizar o projeto e arrumar um fornecedor de SDR's com preco bem 
acessível, e espalhar mundo afora... Mas para isso provavelmente seria 
necessário o apoio de algum grupo.

O Pete, N4ZR, vai dar uma palestra em dayton sobre SDR. Aos poucos vamos 
organizar o site e disponibilizar informacoes sobre como rodar um SDR, 
onde comprar, como participar da rede, etc etc.

Vai ser porreta, nao?

73,

Felipe

Eger PY2EX wrote:
> Felipe,
> 
> Eu já tinha lido a respeito anteriormente e confesso que a idéia é genial.
> Parabéns pela tua iniciativa.
> 
> A ferramenta vai nos ajudar bastante.
> O ideal seria termos estes skimmers espalhados pelas 5 regiões geográficas
> do Brasil.
> 
> Depois me diga se vc já conseguiu o wide-band receiver.
> Como moro dentro da cidade, não sei se o ruído local iria interferir no
> receptor a ponto de prejudicar totalmente o funcionamento do sistema.
> 
> Você já tem conhecimento ou já leu alguma coisa neste sentido ?
> 
> Forte 73
> 
> Eger PY2EX
> 
> 
> 
> 
> -----Mensagem original-----
> De: araucaria-bounces em araucariadx.com
> [mailto:araucaria-bounces em araucariadx.com] Em nome de Felipe Ceglia - PY1NB
> Enviada em: quinta-feira, 3 de abril de 2008 08:38
> Para: Lista Araucaria; RIO-DX-GROUP em yahoogrupos.com.br
> Assunto: (Araucaria) [Fwd: Help Wanted - Skimmer "Reverse Beacon"
> NetworkGoing Operational]
> 
> REPASSANDO
> 
> -------- Original Message --------
> Subject: Help Wanted - Skimmer "Reverse Beacon" Network Going  Operational
> Date: Thu, 03 Apr 2008 07:10:14 -0400
> From: Pete Smith <n4zr em contesting.com>
> To: CQ-Contest em contesting.com,N1MMLogger em yahoogroups.com, 
> DX-IS em yahoogroups.com
> CC: Felipe Ceglia - PY1NB <felipe em dxwatch.com>
> 
> [Moderator please note - this is largely a repost from last weekend -- I
> should know better than to post a message of this sort in the middle of the
> WPXSSB weekend!]
> 
> PY1NB is developing a server to handle data from a worldwide network of
> "reverse beacons" utilizing VE3NEA's CW Skimmer.  Now that Alex has
> released version 1.1, which incorporates a Telnet server, there is an
> opportunity for users of CW Skimmer world-wide to help with this
> potentially fascinating development.
> 
> For those who came late to the subject, a "reverse beacon" is a CW Skimmer
> combined with a wide-band receiver (such as a SoftRock Lite ($13!)) 
> capable of
> receiving a wide swath of a CW band.  My experimental reverse beacon,
> operating on 20 meters for the last several weeks, is a conceptual test of
> the idea.  It is currently chugging along, at a telnet address of
> 24.126.38.27 port 7300, sending out "spots" of everything it hears on the
> band.  Anyone with a telnet client, including virtually all the current
> general and contest logging programs, can connect to it just like a DX
> cluster node.
> 
> The purpose of the aggregator or "hub server" is to provide a single point
> to which users of the future "reverse beacon" network can connect.  Direct
> connections to any individual CW Skimmer will probably quickly overload the
> computer CPU, although I have had as many as 13 simultaneous telnet
> connections with a relatively busy band to report on.  It's not hard to
> conceive of several hundred simultaneous users, hence the need for the 
> server.
> 
> Even more important, the hub server will support a variety of queries.  For
> example, you will be able to transmit a CQ on any band, wait a few seconds,
> and then ask the server, "Where am I being heard?"  Similarly, you will be
> able to ask the server, "What bands is Station X being heard on, and at
> what locations."  Spots will be archived in a database, so that you can ask
> retrospective questions like "When did Station X begin operation on 20
> meters yesterday."  There will undoubtedly be many fascinating uses that
> can be made of the data, either displaying it cartographically or in
> response to complex queries like this.
> 
> But first, we need Skimmer owners to serve as "reverse beacons."  If you
> have CW Skimmer 1.1 working, are using a broadband receiver of any sort to
> feed it with 48 KHz or more of any CW band, and you have an "always on"
> connection to the Internet, then you can be part of this effort.  If you
> are not
> yet using Skimmer but the idea sounds intriguing, it costs nothing to
> try.  Start
> with a trial copy of Skimmer and the audio from your radio; if it is fun,
> invest in
> a SoftRock Lite receiver kit for $13, buy a Skimmer license, and you're off
> and running.  Not only will you have the opportunity to help with the 
> network,
> but you will be able to decide for yourself whether CW Skimmer will fit
> into your
> contest or DX operating, because the same CW Skimmer can be used
> simultaneously to feed
> the reverse beacon network and your logging program.
> 
> You don't have to commit to 24/7 availability of your CW Skimmer
> station.  Mine will be shut down when thunderstorms are in my area this
> spring and summer, for example; the server is smart enough to resume
> receiving spots from a "reverse beacon" when it returns to
> action.  Obviously, though, the more stations that are available at any
> given time, the better the network will be.
> 
> If you'd like to get involved, drop me a note, and I'll help you get
> started.  You can download a full-featured 30-day trial copy of CW Skimmer
> 1.1 from www.dxatlas.com. Even if you initially downloaded the trial
> version of 1.0, and your trial has ended, version 1.1 offers a new trial
> period.
> 
> The prototype hub server is located at http://skimmer.dxwatch.com. It is
> up and running.  You can also get the flavor by contacting my CW Skimmer
> at 24.126.38.27 port 7300, using the telnet "packet" input of your logging
> software or the standalone telnet client that comes with Windows.  Check the
> instructions of your logging program or telnet client to learn how to
> designate the port - typically, there are already DX clusters on the node
> list of your software that are using explicitly designated ports, so you
> can follow their example.
> 
> See you on the network?
> 
> 73, Pete N4ZR
> 
> _______________________________________________
> CQ-Contest mailing list
> CQ-Contest em contesting.com
> http://lists.contesting.com/mailman/listinfo/cq-contest
> 
> 73, Pete N4ZR
> 
> 
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