Nou mode digital Q65

Nou mode digital: el Q65.

Els desenvolupadors del programari WSJT-X han anunciat la creació d’un nou mode digital que serà present a la versió 2.4.0 del citat programari.

El mode s’anomena Q65 i està pensat per a QSOs amb propagació especialment difícil. Amb desplaçament Doppler superior a uns pocs Hz, aquest és el mode que ofereix millors garanties. Resulta molt efectiu en dispersió troposfèrica i ionosfèrica, rebot lunar amb senyals i oscil·lacions ràpides.

Utilitza 65 tons FSK amb la robustesa del mode QRA64 però amb diferències notables:

  • Codi Q-ary a baixa velocitat per a la correcció d’errors FEC.
  • Missatges i seqüències idèntiques als modes FT4, FT8, FST4 i MSK144
  • To únic per a sincronització de freqüència i temps visible en presentacions a la cascada. A diferència del JT65, la sincronització i descodificació és efectiva fins i tot amb senyals curts com rebots de meteors.
  • Sub-modes opcionals amb seqüències de TX/RX de 15, 30, 60, 120 i 300 segons.
  • Una nova tècnica de descodificació altament fiable per a missatges que contenen fragments de missatge ja rebuts prèviament.

Els llindars de sensibilitat (SNR a 2500 Hz amb 50% de descodificació) van ser mesurats per a cada submode tot simulant canals amb soroll gaussià. La funcionalitat anomenada A Priori decoding (AP) millora la sensibilitat en uns quants dB a mesura que s’acumula la informació del QSO.

1,930 radio amateurs have already signed the petition to the ARRL to include Catalonia in the DXCC countries list

Today, 1,930 signatures have been reached from the radio amateurs asking the American Radio Relay League (ARRL) to add Catalonia in the DXCC countries list. To achieve the goal, we must continue to increase the number of requests. Those who haven’t signed can do it here: Sign the petition.

The main purpose of amateur radio is, among others, to contact every country in the world through the radio, establishing a competition among all, get diplomas, trophies and included in a global ranking of worked countries. When we talk about countries, we do not mean the list of the 193 states members of United Nations, is a list created by radio amateur matches and no official statements. These “radio-countries” are called DXCC entities.

The DXCC entities are part of a list drawn up by the DX Century Club and belongs to the American Radio Relay League (ARRL). The ARRL is the national association for amateur radio in the United States and is the one who drafted the specifications of this diploma. In the present case, the ARRL decided at the time, in 1945, to create a broader list of countries to make the competition more attractive and interesting. It is for this reason that radio amateurs are governed by a list of 340 countries (DXCC entities) and not the 193 official states.

The criteria for admitting a country in the DXCC list are geographical but also political and ideological, although many amateurs always say that this group does not enter into political issues, arguing that it is not legal, which is totally false. In general, the islands are always different countries but belonging to the same state. An example: Balearic Islands, Ceuta and Melilla and Canary Islands are three different countries but all belong to Spain. Scotland, England, Wales, Man, Northern Ireland and Jersey are six different countries but all belong to the United Kingdom.

Therefore, if Scotland is a DXCC entity, why not Catalonia? Seeing the example of Scotland, Catalonia has the perfect conditions, according to the rules of the ARRL, to become a DXCC entity today. We must continue demanding to the ARRL, including Catalonia in the DXCC countries list. The American Radio Relay League must add Catalonia to the DXCC countries list. Catalonia is a nation of Europe with more of 1,000 years of history.

We request the ARRL board directors, Mr. Richard A. Roderick (K5UR), President of the American Radio Relay League, grant DXCC country status to Catalonia.

We inform you that we have opened a campaign on change.org where more than two thousand Catalan radio amateurs have signed a petition requesting that Catalonia be recognized as a DXCC country.

Mr. Richard A. Roderick, the question is: Are you going to despise and ignore the majority (51%) of catalan radio amateurs?. Remember, decisions are made by people voting, not the ARRL.

Historical injustice with Catalonia by the ARRL and the DXCC award program

Catalonia, a nation of Europe from more than one thousand years, and the catalan radio amateurs has the right to ask the DXAC Committee to add Catalonia in the DXCC countries/entities list. We just would like to correct the historical injustice and draw the close attention of the DXAC Committee and the American Radio League (ARRL) board of directors to this fact.

Scotland, Balearic Islands, Ceuta & Melilla, Canary Islands, England, Wales, Man, Northern Ireland and Jersey counts as a separate countries in various contests and for various certificates. These territories are not independent states, like Catalonia. The only “argument” recalled in support of denying DXCC country status to Catalonia seems to be: “If we accord DXCC country status to Catalonia, we’ll be flooded by petitions to have the same status conferred on similar territories”.

Such a fear is baseless because there are few similar countries like Catalonia. There should consequently be no difficulty taking a decision to treat Catalonia as a DXCC country.

Despite the foregoing, Catalonia continues to be denied DXCC country status. This patently illogical and inequitable situation cries out for resolution, even if the unusual step of overriding the DX Advisory Committee’s recommendation has to be taken.

The ARRL board of directors would be remiss in carrying out its own duties as an elected body if it did not reserve to itself the right to reverse what it found to be a flawed finding by an advisory committee. A preferable path, of course, would be for the DXAC itself to reconsider the matter.

Therefore, we request the ARRL board directors, Mr. Richard A. Roderick (K5UR), President of the American Radio Relay League, grant DXCC country status to Catalonia.

We inform you that we have opened a campaign on change.org where more than two thousand Catalan radio amateurs have signed a petition requesting that Catalonia be recognized as a DXCC country.

Mr. Richard A. Roderick, the question is: Are you going to despise and ignore the majority (51%) of catalan radio amateurs?. Remember, decisions are made by people voting, not the ARRL.

ARRL RTTY Roundup 2021

Concurs d’avui i demà. Inclou els modes digitals FT4 i FT8.

 Nom ARRL RTTY Roundup 2021
 Inici 02/01/2021 | 18:00 UTC
 Final 04/01/2021 | 00:00 UTC
 Modes FT4 | FT8 | RTTY | BPSK | ASCII | AMTOR | PACKET
 Bandes
10, 15, 20, 40 i 80 m
 Bases
Bases del concurs

Te’n recordes? Cap d’any de 1984 amb Àlex Bruguera a Ràdio Guia

Te’n recordes? Avui fa trenta sis anys.

Ràdio Guia va emetre entre els anys 1983 i 1986 des del Roc Llarg a Sant Bartomeu del Grau (Osona) a la freqüència de 97.5 FM amb so d’alta definició. Emetia tretze hores diàries.

En aquesta gravació podem sentir Lluís de Planell i Josep Cumbrera. Al final de la gravació podem sentir Àlex Bruguera la nit de cap d’any del 31 de desembre de 1984 fent publicitat de la discoteca Roc 34 de Vic.gravacions-3

This is the answer that all the radio amateurs of Catalonia expect from the ARRL

This is the answer that all the radio amateurs of Catalonia expect from the American Radio Relay League (ARRL). It is unfortunate that the ARRL despises the majority of the catalan radio amateurs who have signed our petition on change.org

The ARRL awards committee would like to inform you that at a meeting of this committee it has been decided to award Catalonia a new DXCC entity/country with the number 523 effective from January, 1 2021.

Best regards,
Rick Roderick, (K5UR) President of the ARRL.
President of the ARRL Awards Committee.

Entra en funcionament un radioenllaç de 27 MHz a Osona

Des de fa pocs dies ha quedat instal·lat i en funcionament un radioenllaç de Banda Ciutadana al canal 40 AM, a la freqüència de 27.405 MHz. S’hi pot accedir per ràdio, emetent pel citat canal 40 AM amb un equip de CB-27 o per internet, mitjançant el programa eQSO i connectant-se a la sala CB.

Això ha permès reactivar la banda de 27 MHz en comarques on fins ara estava totalment inactiva. L’enllaç està ubicat a Vic i dóna cobertura a tota la comarca d’Osona i part del Ripollès i de la Garrotxa.

Els enllaços operatius actualment emeten amb una potència de 4 W. i cobreixen les zones Barcelona, Berga, Canyelles, Tarragona, Vic i Taurinyà, entre d’altres. D’aquesta forma, els CB-istes tenen la possibilitat de connectar-se amb països de tot el món utilitzant les emissores de CB-27. Aquesta banda és lliure, gratuïta i no es necessita cap llicència per emetre-hi.

By ea3fhp Posted in CB-27