England-Cuba 5watts on 20 meters

Another great QSO across Atlantic with 5 watts and QRM on  14.103 Mhz. (150 characters/minute)

Congratulations to G4IPZ and CO2DC. Thanks for the info.

Hi Jose.
 
Thanks for the great software you have developed. I have just downloaded the new version and am trying it later.
I thought you might be interested in my contact from the UK to CO2DC Havana, Cuba on April 26th.
I was running about 5 watts from a Trio TS130V into a half size G5RV.
There was some trouble with qrm but we made it in the end.
 
RX8: <21:15 UTC> <-152.3 Hz> CQ  CQ  CQ  de  CO2DC  CO2DC  CO2DC  pse k  <STOP> <-16 dB>
TX8 <21:15 UTC> co2dc  co2dc  co2dc  de  G4IPZ  G4IPZ  G4IPZ  kn   <STOP>
TX8 <21:17 UTC> CQ  CQ  CQ  de  G4IPZ  G4IPZ  G4IPZ  pse k   <STOP>
RX8: <21:18 UTC> <-152.3 Hz>  QRZ QRZ QRZ QRZ g4i?   G4I // DE CO2DC CO2DC  <STOP> <-14 dB>
TX8 <21:19 UTC> co2dc  co2dc  co2dc  de  G4IPZ  G4IPZ  G4IPZ  kn   <STOP>
RX8: <21:20 UTC> <-152.3 Hz> G4IPZ  G4IPZ  G4IPZ  de  CO2DC  CO2DC  CO2DC   S/N: -21 dB, Marge: +5 dB S/N: -21 dB, Marge: +5 dB NAME JESUS JESUS, QTH  HABANA HABANA, Loc: EL83TC G4IPZ.G4IPZ de CO2DC CO2DC KN <STOP> <-15 dB>
TX8 <21:21 UTC> co2dc de G4IPZ  S/N: -14 dB, Marge: +12 dB My name is Dale, my QTH is Biggin Hill. UK, Locator: JO01AH  de g4ipz kn <STOP>
TX8 <21:24 UTC> co2dc de G4IPZ  sri much qrm much qrm Agn pse kn <STOP>
TX8 <21:24 UTC> co2dc de G4IPZ  sri much qrm much qrm Agn pse kn <STOP>
RX8: <21:29 UTC> <-164.1 Hz> G4IPZ  G4IPZ  G4IPZ  de  CO2DC  CO2DC  CO2DC  kn  <STOP> <-2 dB>
TX8 <21:30 UTC> co2dc  co2dc  co2dc  de  G4IPZ  G4IPZ  G4IPZ  rr much qrm here. running 5 watts 5 watts how copy? kk   <STOP>
TX8 <21:31 UTC> co2dc  co2dc  co2dc  de  G4IPZ  G4IPZ  G4IPZ  rr much qrm here. running 5 watts 5 watts how copy? kk   <STOP>
RX8: <21:32 UTC> <-164.1 Hz> G4IPZ.G4IPZ de CO2DC CO2DC tnx fer QSO, 73. G4IPZ de CO2DC sk  <STOP> <-10 dB>
TX8 <21:33 UTC> co2dc de G4IPZ  best 73 s see you agin KK <STOP>
 
All the best 73
 
Dale (Slim) Haines G4IPZ

SPAIN-CUBA 5 Watts on 40 meters

Again, 5 watts were enough to across the Atlantic on 7050 using ROS HF at 8 bauds.  This time between Spain and Cuba, two countries that really support the experimentation as one of the basic purposes of Amateur Radio.

Congratulations to Pepe EA1OD and Jesús Co2DC.

 RX8: <23:42 UTC> <-7.8 Hz> CO2DC de EA1OD  HOLABUENAS TARDES JESUS Y0UI RST 579 579 579My name is Car Car, my QTH is Gijon Gijon, Locator: IN73em CO2DC de EA1OD  PSE KN <STOP> <-8 dB>
TX8: <23:43 UTC> EA1OD.EA1OD de CO2DC CO2DC OK CAR EN GIJON TU SIG  S/N: -8 dB, Marge: +18 dB NAME JESUS JESUS, QTH  HABANA HABANA, Loc: EL83TC EA1OD.EA1OD de CO2DC CO2DC KN <STOP>
RX8: <23:45 UTC> <-7.8 Hz> CO2DC de EA1OD  OK JESUS  G/ æf   POR EL QSO MI QSL VIA PEPE EA5KB EQSL/LOTW TAMBIEN.
Station: ROS v3.4.6 Beta, IC-703  ant hf9v  Pontencia sobre 5 wattnx fer QSO, 73. CO2DC de Eet1OD sk  <STOP> <-11 dB>
TX8: <23:47 UTC> EA1OD.EA1OD de CO2DC CO2DC OK CAR DICES QUE ESTAS CON 5W ?????? BK BK <STOP>
RX8: <23:48 UTC> <-7.8 Hz> CO2DC de EA1OD  qsl  solo 5 watts éc703  soy qrp estacir tjesus ok ?CO2xeo de EA1OD  kne <STOP> <-10 dB>
TX8: <23:49 UTC> EA1OD.EA1OD de CO2DC CO2DC MADRE MIA TIENES TREMENDO SENALON TE COPIE TODO ES INCRIBLE LA FORMA EN QUE LLEGAS S/N: -10 dB, Marge: +16 dB  CUANDO ROS SE ENTERE DE ESTO LE VA A DAR UN INFARTO , BUENO DEJA PASARTE LOS DATOS Station: ROS v3.4.1 Beta, RADIO FT 900 40 W  ANT DIPOLE  PC PB  WINDOW7  Y CORRECTO LA QSL VIA PEPE NO TIENE PROBLEMA , POR CIERTO MI DIFUNTO SUEGRO ERA DE GRADO CON LO CUAL MIS 5 HIJOS TIENEN UN 25% DE ASTURIANO …Y 50% DE GALLEGO  EA1OD.EA1OD de CO2DC CO2DC KN <STOP>
RX8: <23:53 UTC> <-7.8 Hz> CO2DC de EA1OD  ok a TODO jesus  tu llegas muy bien tambien   hi tuohih hi  hi -7db merge -11 
gracias por el qso me voy para la cama aqui local time 0153  de la matina y mañana hay    ………….. hi hi hi hi
/3 y espero volver a oirte ei
z o CW   73 desde GInMn ASTURIAS n CO2DC de EoO sk snt <STOP> <-6 dB>
TX8: <23:55 UTC> EA1OD.EA1OD de CO2DC CO2DC QUE PERRA SENALS/N: -6 dB, Marge: +20 dB  QUE MAS QUIERES OYE PREPARA EL EQUIPO PARA OTRO DIA PODER TRANSMITIR CON 1 W O MENOS , ESTO ES SENCILLAMENTE INCREIBLE Y SI YO SE QUE ES TARDE QUE TENGAS BUENOS SUENOS Y MANANA CUANDO DESPIERTES CREETE QUE ES VERDAD Y NO FUE UN SUENO LLEGAR A LA HABANA DE ESTA FORMA CON 5W UN ABRAZO CAR 73 EA1OD.EA1OD de CO2DC CO2DC SK <STOP>

ITALY-CUBA 5 watts on 40 meters

On April 24,  Giussepe IK5UIM completed a QSO with Jesús CO2DC across the Atlantic with only 5 watts and some interferences of RTTY contest on 7050 Mhz. Speed: 150 characters/minute (8 bauds).

Giussepe started with 300 watts, but at the end he realized 5 watts were enough with this technology for HF.

Congratulations to Giussepe and Jesús for the great QSO and for reporting  the log file.

RX8: <01:11 UTC> <-3.9 Hz> CO2DC  CO2DC  CO2DC  de  IK5UIMetyftEeM  IKe fM  ok dear very good mode of trasmission  it©vhis versions becose the  3.3.3 have bigh problem in sincro.  tnx fer qsra ciao ciao a go to bed in italy now     is local time 3.11  isn nigth  CO2DC de IK5UIM  <STOP> <-14 dB>
TX8: <01:14 UTC> IK5UIM.IK5UIM de CO2DC CO2DC U ARE STILL WITH ONLY 5 W ?? AND YES THE NEW VERSION HAS NO MISTAKES OR BUGS AND THE LINE TO WRITE IS DOUBLE  MORE EASY TO READ WHAT U WRITE , OK GO TO BED AND MONDAY I WILL SEND ROS A COPY OF THIS LOG FOR HIM TO KNOW HOW 40M WORK WITH ONLY 5 W ACROOS THE ATLANTIC  73 CIAO AND SWEET DREAMS GIUSEPPE  IK5UIM.IK5UIM de CO2DC CO2DC KN <STOP>
RX8: <01:17 UTC> <-3.9 Hz> CO2DC  CO2DC  CO2DC  de  IK5UIM emK5UIM  IK5UIM very good copy  i run only 5 watts  only 5 watts  tnx  for gegging     ciao ciarXphd dx in ros mode  73    KCO2DC de IK5UIM sk S/t+e -14 dB, Marge: +12 dB Email:  <IK5UIM@TIN.IT>  <IK5UIM@TIN.IT> ¨ <STOP> <-11 dB>
TX8: <01:19 UTC> IK5UIM.IK5UIM de CO2DC CO2DC S/N: -14 dB, Marge: +12 dB  73 tnx fer QSO, 73. IK5UIM de CO2DC sk  <STOP>
RX8: <01:20 UTC> <-3.9 Hz> CO2DVSe IK5UIM ciao grazie per il contatto   alla prossima.. … <STOP> <-11 dB>

Krasnodar-New Zealand on 14103 (10 watts)

New QSO Europe-New Zealand, RA6DJ (20 watts) with ZL2FT (10 watts) at 16 bauds with a ¡¡ Fade Marge of only 2 dBs!!.

In thats conditions is bettter down to 8 bauds (taking advantage of the ROS Auto RX options). Marge of 2 dBs is very poor for a long DX communication over HF. 

From Twiter (http://twitter.com/rosfsk):

via @ZL2FT: Woked Ivan RA6DJ on 20mtrs 14.103mhz Ros at 0424utc , 100% copy both ways, i was running 10 watts into my inverted vee with a Ic

Thanks for the info, Jason, and congratulations. At 8 bauds you could have used only ¡¡5 watts!!. At Twente i only could copy the messages from RA6DJ:

RX16: <04:24 UTC> <-15,6 Hz> ZL2FT    ZL2FT    ZL2FT    de  RA6DJ  RA6DJ  RA6DJ  kn  <STOP> <2 dB>
RX16: <04:26 UTC> <-15,6 Hz> ZL2FT   de RA6DJ My name is Ivan, my QTH is Krasnodar, Locator: KN95ma S/N: -21 dB, Marge: +2 dB  <STOP> <4 dB>
RX16: <04:27 UTC> <-15,6 Hz> RRRRRRStation: ROS v3.3.0 Beta, TS-850S 20W Ant. A3S Yagi tnx fer QSO,  GB 73. ZL2FT   de RA6DJ sk  <STOP> <-2 dB>
RX16: <04:28 UTC> <-15,6 Hz> Long path , Jason73!!! <STOP> <5 dB>
RX16: <04:29 UTC> <-15,6 Hz> 73! All the best!QSL via e-qsl ZL2FT   de RA6DJ  sk <STOP> <6 dB>

AUSTRALIA-ITALY ON 14103

New DX Europe-Australia. Franco IZ1MKE with Tim VK4YEH on 14103 using ROS8/2250 working with a Fade Marge of only 5 dBs above threshold of modulation over a fadding channel. I acknowledge that ROS tests have exceeded all my expectations. 🙂

Thanks Franco for the info and good DX.

ROS RECEIVED FROM 16.335 KM MY QTH

VK4YEH has received your Radio Message sent at: 08:02 UTC

Received Message: ‘VK4YEH VK4YEH VK4YEH de IZ1x yE IZ1MKE IZ1MKE kn Email: ‘

Operator Info:
Callsign: VK4YEH
Name: Tim
E-mail: vk4yeh@gmail.com
QTH: Brisbane, Australia
Locator: QG62ll
Station: FT-950
ROS Version: 3.3.0 Beta

Signal Info:
Channel: HF
Symbol Rate: 8 bauds
BW: 2250 Hz
Frame Acquisition: 18/21
Final Acquisition: 14/16
Frequency Shift: 27.3 Hz
Symbol Error detected by Viterbi: 20%
S/N (2500 Hz): -21 dB, Fade Marge: +5 dB
PTT Loop: Disabled
Vumeter Level: -16 dB      (Volume very low. Better -10 or -5 dB)
CPU Usage: 12 %

Congratulations for the QSO

New improvements for ROS1/2250

On April 9 at 00:00:01 UTC, a new improvement will be incorporated to ROS 1/2250. Now this protocol will use  a more diversity in frequency. This mode is the best opcion for QRP extreme over a HF channel. 

As before, changes have been programmed previously in the software 2 weeks ago, so you should not problems during the transition.

Also, by suggestion of Vladimir Shabaldas (VA3LLZ), i have add an option of RX AUTO to can receive automaticly at all the differents symbols rate.  As this require more CPU usage, you can decide if you want auto decode 16 and 8, or if you want auto decode at 16, 8 and 1.

You must check CPU Usage Gauge to know if you can use this option, or you can select AFC +-78Hz to reduce CPU Usage. As you have realized working with ROS, AFC of 78Hz is enough for the most of QSO’s.  

This new version will be upload today at 00:00.

Enjoy it

Australia-Twente. 8bauds on 40 meters

Australia-Twente on 7.050 Mhz. again 

But this time more difficult yet : 8 bauds  🙂   (ROS8/2250)

RX8: <20:03 UTC> <11,7 Hz> CQ  CQ  CQ  de  VK4YEH  VK4ßcH  VK4YEH  pse k  <STOP> <-22 dB> 

RX16: <20:04 UTC> <23,4 Hz> CQ  CQ  CQ  de  OE/OM4KK  OE/OM4KK  OE/OM4KK  pse k  <STOP> <-10 dB> 

RX16: <20:05 UTC> <23,4 Hz> CQ  CQ  CQ  de  OE/OM4KK  OE/OM4KK  OE/OM4KK  pse k  <STOP> <-12 dB> 

RX8: <20:05 UTC> <23,4 Hz> CQ  CQ  CQ  de  VK4YEH  VKKYEH  VK4~kne  pse k  <STOP> <-21 dB> 

RX16: <20:07 UTC> <23,4 Hz> CQ  CQ  F5NHJ  F5NHJ  F5NHJ  CQ  <STOP> <-14 dB> 

 

Good Test, Tim

Australia-Twente on 40 meters

Wohh. Intercepted two messages from Australia in the Twente SDR on 7.050 Mhz. Mode ROS1/2250.

¡18.000 kms! Perfect copy with strong multipath.

RX1: <18:28 UTC> <11,2 Hz> CQ VK4YEH QG62LL  <STOP> <-22 dB>
RX1: <18:31 UTC> <11,2 Hz> CQ VK4YEH QG62LL  <STOP> <-18 dB>

¡Excellent SDR!

Belgium-New Zealand with 3 Watts

¡Great QSO! On March 3, ON3WP could establish contact with ZL1RS  using a vertical  antenna and 3 Watts on 20 meters. 

(With the ROS new versions, it is recommend to select 8 bauds for that purpose).

Congratulations for the QSO and thanks for the info.

HELLO JOSE,

GREAT CONTACT 05/03/2010 – 08H29 IN ROS 16 PWR 3 Wtt ICOM 703 ANT VERT 12 AVQ GRND  ON 14.103 WITH BOB ZL1RS DISTANCE MY LOCATOR JO10UJ LOCATOR ZL1RS RF64US = 18.170 KM IN 3Wtt

JOSE CONGRATULATION FOR THE PROGRAM ROS GOOD GOOD

73’s DE SERGE ON3WP/QRP

Japan-Twente. Good copy

Woohh. Intercepted these messages from  7J1ADS (Japan) in the Twente SDR on 14103. Fade Marge  between 4 and 8 dB. ¡10.000 Kms. !    

 

RX16:<07:54 UTC> <15,6 Hz> CQ CQ CQ de 7J1ADS 7JquS 6J1ADS pse k <STOP> <-18 dB>

RX16:<07:55 UTC> <15,6 Hz> CQ CQ CQ de 7J1ADS 7J1ADS 7J1ADS pse k <STOP> <-15 dB>

RX16:<07:56 UTC> <15,6 Hz> CQ CQ CQ de 7J1ADS 7J1ADS 7J1ADS pse k <STOP> <-17 dB>

RX16:<07:58 UTC> <15,6 Hz> CQ CQ CQ de RK6DH RK6DH RK6DH pse k <STOP> <-17 dB>

RX16:<07:59 UTC> <15,6 Hz> CQ CQ CQ de RK6DH RK6DH RK6DH pse k <STOP> <-15 dB>

RX16:<07:59 UTC> <15,6 Hz> pQ CQ CQ de 7J1ADS 7J1ADS 7J1ADS pse k [ n tN <STOP> <-19 dB>

RX16:<08:01 UTC> <31,3 Hz> CQ CQ CQ de 7J1ADS 7J1ADS 7J1ADS pse k <STOP> <-15 dB>

 

RX16:<08:49 UTC> <15,6 Hz> UN8JE de 7J1ADS My name is Michael, my QTH is Y  hohama, Locator: PM95tm  <STOP> <-19 dB>

RX16:<08:51 UTC> <31,3 Hz>  7J1ADS  7J1ADS  7J1ADS  de  UA3UNR  UA3UNR  UA3UNR  kn  <STOP> <-3 dB>

 

RX16:<13:18 UTC> <15,6 Hz> F8KKH de 7J1Yt tey name is Michael, my QTH is Yokohama, Locator: PM95tm F8KKH de 7J1ADS  <STOP> <-19 dB>

RX16:<13:19 UTC> <15,6 Hz> F8KKH de 7J1ADS tnx fer QSO, 73. F8KKH de 7J1ADS sk S/N: -17 dB, Marge: +6 dB F8KKH de 7J1ADS  <STOP> <-16 dB>

RX16:<13:20 UTC> <15,6 Hz> UA3TN de 7J1ADS My name is Michael, my QTH is Yokohama, Locator: PM95tm UA3TN de 7J1ADS  <STOP> <-17 dB>

RX16:<13:21 UTC> <15,6 Hz> UA3TN   e 7J1ADS Station: ROS v3.0.+tq tzd eµP 000D  40 watts in aee 7-bd Yagi vm i LS/N: -14 dB, Marge: +9 dB tnx fer QSO, 73. UA3TN de 7J1ADS sk UA3TN de 7J1ADS  <STOP> <-18 dB>

RX16:<13:22 UTC> <15,6 Hz>  UA3TN de 7J1ADS Thank you for very nice QSO. My QSL is 100% OK tnx feh Qoð, 73uc=  O4de 7J1ADS sk  <STOP> <-18 dB>

RX16:<13:24 UTC> <15,6 Hz>  RA2FB  RA2FB  RA2FB  de  7J1ADS  7J1ADS  7J1ADS  kn  <STOP> <-15 dB>

  Congratulations Michel.