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

Sexta Abril 4 19:00:10 BRT 2008

olá

pra quem ainda não conhece, tem um beacon reverso montado por colegas brasileiros na Base Comandante Ferraz, na Antartida e usando um SDRZero, kit criado tambem por eles: De Marco, PY2WM e Edson, PU1JTE, só tá faltando o Skimmer 

http://www.appr.org.br/spectrometer.php?qth=GC07tw

e tambem funcionando como monitor dos beacons do NCDXF

http://www.appr.org.br/ibn.php?qth=GC07tw

73 QRO do Josias PY2JCM

marcelo em alternex.com.br escreveu: Eger, Felipe

O kit do softrock é bem barato. Se comprar em grupo então, deve ser ainda mais tranquilo.

Marcelo
PY1KN

> 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 
>> To: CQ-Contest em contesting.com,N1MMLogger em yahoogroups.com,
>> DX-IS em yahoogroups.com
>> CC: Felipe Ceglia - PY1NB 
>>
>> [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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73 QRO do Josias
 PY2JCM
 Grid  GG55nl
 S  24º 30' 30,4"
 W 048º 50' 38,7"
 Apiaí - São Paulo - Brasil
 Portal da Mata Atlântica.
 http://geocities.yahoo.com.br/py2jcm/

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