April 24, 2014

F5IRO (Freddy)

Demain, vous fabriquerez votre propre ordinateur en l’imprimant sur une simple feuille A4

"Une équipe de chercheurs japonais vient de mettre au point une cartouche d’encre à particules d’argent. Adaptée à une imprimante classique, elle est capable de produire des circuits électroniques d’une grande qualité en une seule impression... Cette nouvelle technologie, appelée AgiC, est un système déployé par des chercheurs japonais grâce auquel votre imprimante de bureau classique vous

Posted at: April 24, 2014 05:47 AM

Activité solaire par F6BQU

F6BQU est aussi un passionné d'astronomie, il expose sur son site Web de magnifiques images de l'activité solaire, fruit de son labeur aussi dans ce domaine. Merci à David F8CRS pour l'info. lien

Posted at: April 24, 2014 05:47 AM

Bulletin REF

Le bulletin hebdomadaire du REF. lien

Posted at: April 24, 2014 05:47 AM


NH0J, Marianas Is.

Yutaka JQ2GYU/WS2Y

Tengo el placer de anunciar que mi esposa Miho JJ2VLY/WS2M y yo Yutaka JQ2GYU/WS2Y, estaremos una vez mas activos desde Tinian Is. como NH0J del 6 al 11 de mayo 2014.

QRV en Cw, Ssb y Rtty de 10 a 80mts incluyendo las bandas WARC. Miho prestara especial atención a Rtty.

Qsl vía JJ2VLY buró o directa.

73´s, Luis EA1CS

Posted at: April 24, 2014 05:42 AM

April 23, 2014

EA3AKY (Josep)

C37AC 6 meters audio at ZS6NK

Paul, ZS6NK, send me a recording of C37AC signal on 6 meters. Thanks !

Posted at: April 23, 2014 11:01 PM

G3XBM (Roger)

LNR FX-4 transceiver?

See http://www.lnrprecision.com/ and scroll down the page.

This looks "Chinese" in origin and I am wondering if this is a badged product?  It looks a bit like a poor man's KX3. It is a 4 band, 5W QRP CW transceiver.  In the USA it retails for $450. It is clearly aimed at backpackers.

See https://www.facebook.com/media/set/?set=a.519456908132892.1073741827.229134337165152&type=3 for some images of the little rig.

Posted at: April 23, 2014 11:21 PM


Fotos de ZL7AAA


Algunas fotos de la pasada operación desde Chatham Island ZL7AAA, finalizada el 31 de marzo 2014.

73´s, Luis EA1CS

Posted at: April 23, 2014 09:56 PM

YB4IR/5, OC-107

Iman YB4IR vía Twitter

Estaré QRV desde la isla Singkep OC-107 del 8 al 13 de mayo 2014 como YB4IR/5, de 10 a 40mts en Cw, Ssb y Rtty. Estoy programando los viajes con las fechas escogidas..... nos vemos en los pile up.

73´s, Luis EA1CS

Posted at: April 23, 2014 09:51 PM

A35V y A35X, la historia

Miércoles 23 abril 2014- 08.00z                                        
Keith y yo estamos a salvo en Escocia con todo el equipo y las antenas. También estamos buscando en vuestros correos electrónicos acerca de correcciones del log, etc, y cargaremos los archivos del log corregidos a ClubLog y LoTW varias veces durante la próxima semana o la siguiente.

Después de nuestra DXpedición a VK9CZ el año pasado cometí el error de esperar demasiado tiempo antes de escribir la historia de VK9CZ, por lo que la intención de escribir sobre A35V y A35X será una realidad en los próximos días si es posible. Espero subir algunas de las cientos de fotos a nuestra web, nos resultó imposible hacerlo desde Tonga debido a la conexión de internet, y en Sydney estábamos demasiado cansados para hacerlo.

Tenemos que felicitar a JA1HGY y KH6CG que ambos realizaron 26 QSOs con los 2 indicativos. La puntuación más alta de Europa fue OK2PAY con 24 QSOs y la más alta de Escocia fue GM4XMD con 11 QSOs.

A la hora de publicar este artículo ya han comenzado a contarnos su historia en inglés, en días siguientes la completarán.... Click

73´s, Luis EA1CS

Posted at: April 23, 2014 09:22 PM

Vídeo de 9U4U

Gentileza de Nippon DX Association

73´s, Luis EA1CS

Posted at: April 23, 2014 09:03 PM

VU2NAN (Nanda)

Harmonic Interference

One day, in spite of my Minimalist Converter being disconnected, harmonics of the local 610 kHz broadcast station were still being received in the shack receiver.

That was indeed surprising. Then, after some thought, realisation dawned that the Crystal Radio on the shack table could be the cause.

This was confirmed by disappearance of signals when the the ground connection to the crystal radio was removed.

Then, on a feeling that the minimalist converter would display identical behaviour, its output was next connected to ground.

The signals returned.

It was my first-hand experience of harmonic interference!

Posted at: April 23, 2014 07:36 PM

AE5X (John)

Video documentary: The role of British hams during both world wars

From the East Anglican Film Archive: “Illustrated with archival film and photographs, as well as interviews with those involved, the documentary traces the evolution of civilian involvement in radio-based intelligence during both world wars. Wireless espionage was to play an even more important role during World War II, with the Secret Intelligence Service setting up…

Posted at: April 23, 2014 05:48 PM

PD0AC (Hans van Rijsse)

Why DMR users sound so funny

If you think it has anything to do with vocoders: the answer is “NO”.  

Posted at: April 23, 2014 05:18 PM

G3XBM (Roger)

DC0DX on 472kHz WSPR

Several spots during the night of DC0DX (467km) running 10mW ERP on 472kHz WSPR. There may have been later spots but sometime during the night the Win 8.1 PC decided to stop the WSPR software running (again). I have reset the clock and restarted the software on 474.2kHz USB dial.

Posted at: April 23, 2014 05:15 PM


YW0A Aves Is. comienza la aventura

4M5DX vía Twitter 22 abril 2014- 1540z


Despues de un duro trabajo estaremos partiendo hacia Isla de Aves el dia 29/04/2014 a las 07:00 horas YV, el viaje de ida durá unas 40 horas, esten atentos, estaremos comenzando la actividad alrededor del dia 30 de abril  al mediodia, estaremos operando entre 5 y 7 días, este último dato esta por confirmar.

 El Equipo YW0A.

73´s, Luis EA1CS

Posted at: April 23, 2014 02:54 PM

VU2NAN (Nanda)

Noise cancellation on 2m using 2 antennas

A while ago, static-type QRM was encountered right across the 2m band.

It proved to be a nuisance while receiving weak signals using either of the shack antennas - a 1/4λ Ground Plane at a height of 15m and a Slim Jim at a height of 10m, located 5m apart.

The noise was presumed to be of commercial origin as it was not present at nights and on weekends.

Then, on an impulse, both the antennas were connected to the rig through a BNC-T connector. Surprisingly, the QRM disappeared and the audio level went up considerably.

The offending noise had been phased out just like that!

The antenna feeder lengths were then changed one at a time. The QRM promptly returned, confirming that it was indeed phase cancellation at work.

SWR was 3:1 with both the antennas connected. Inspite of that, it was now possible to comfortably work through a distant repeater.

Posted at: April 23, 2014 01:39 PM

Series tuning for a Crystal Radio

Adding series tuning to my first crystal radio gave significant performance improvement.

The loopstick is 90 turns of Litz wire close-wound on a 2" length of  ¼" ferrite rod and the variable a 500+500 pF PVC gang condenser with the 2 sections in parallel.

Location of the variable at the ground end was sacrificed for the sake of convenience of an outboard assembly in series with the antenna lead-in.

Posted at: April 23, 2014 11:51 AM

F5IRO (Freddy)

La télégrahie militaire en Chaouïa depuis l'origine de la campagne

Un autre article de l'ami Alain F3CW, qui nous fait revivre l'histoire de la télégraphie militaire lors de la campagne du Maroc. lien

Posted at: April 23, 2014 08:42 AM

Journal de bord: Glorieuses, Juan de Nova , Europa

Les TAAF viennent de diffuser un très beau reportage agrémenté de nombreuses images, après la rotation du Marion Dufresne dans les îles Eparses. lien

Posted at: April 23, 2014 08:34 AM

K0NR (Bob)

This Spewed Out of the Internet #27

0511-0701-3118-0930More important things spewing forth from the interwebz:

The Ham Hijinks guys have been at it again, with this article: New Drug Aims To Get More Hams On The Air
Warning: Do Not Take These Guys Seriously, It Only Encourages Them

Chiming in on April 1st, Dan KB6NU reported that the FCC is going to reinstate the Morse Code test.

I posted an article about using UTC over at HamRadioSchool.com: Does Anybody Really Know What Time It Is?

KB9VBR has a nice article that explains the common types of antenna connectors used with ham radio.

Elliot KB0RFC has been writing some interesting stuff about D-STAR, DMR and other things digital on his blog. See his latest article: Developing a DMR / D-STAR radio

James R. Winstead, KD5OZY, of Coleman, Texas found out that sometimes the FCC does show up and bust radio amateurs that are causing problems on the air. See the ARRL article here. It always cracks me up when the FCC Engineer reports that during their station inspection, the offender’s radio is still tuned to the frequency where the problems were occurring.

Serious DXers all over the world are in severe depression after finding out that Crimea is Not a New DXCC Entity. Conspiracy Theory: the whole thing was instigated by a group of hams that believed Crimea would be a new one.

73, Bob K0NR

Posted at: April 23, 2014 03:48 AM

April 22, 2014

G3XBM (Roger)

472kHz WSPR unique reports over last 2 weeks

Looking at the results over the last 2 weeks, I see that I've had reports of my 5mW ERP (15m spaced earth-electrodes) from 8 different stations. Best DX is F1AFJ at 607km followed by reports from 3 different Dutch stations. I'll leave the set-up running overnight in case I get any new stations reporting me.

Posted at: April 22, 2014 11:07 PM


ARI BERGAMO festeggia Papa Giovanni XXIII°

La canonizzazoione di Papa Giovanni nelle iniziative dei radioamatori di Bergamo.IQ2BG-Papa Giovanni XXIII_rev2

Posted at: April 22, 2014 08:14 PM

In Ucraina anche la Radio schierata su due fronti.

guerra fredda radioradio ukraina Articolo di Giampiero Bernardini .

Posted at: April 22, 2014 08:10 PM


Zorro JH1AJT en Monte Athos

N0UN HAm Radio Blog

Como se ha mencionado en este  blog en un anterior post , Zorro está operando como SV8/KH0WF en la isla griega de Ammouliani (EU-174).

Hablé con Zorro anoche por teléfono y esto es parte de la información que me pasó.

Durante un de sus pile up en 40mts desde SV8 ayer, Monk Apollo (SV2ASP / A) fue capaz de romper el pile up. Tuvieron un gran QSO de unos 20 minutos. Desde ese momento la información Monte Athos se extendió en algunos de los canales de noticias DX europeos.

Zorro (JH1AJT) y su pequeño equipo de trabajo viajarán a Monte Athos el 23 de abril para reparar / instalar antenas SteppIR, y también instalar una torre de 12/13mts para el monje Apollo (SV2ASP / A). Zorro lleva con él un amplificador de 500 vatios y una radio Kenwood TS480HX que planea donar a Apolo antes de partir del Monte Athos el lunes 28 de abril.

Debido a los requisitos especiales para operaciones de radio en el Monte Athos, y también que la principal tarea (s) será la de reparación / instalación de antenas y de una torre, Zorro no sabe en este momento si va a tener el tiempo o si las circunstancias le permitirán operar desde el Monte Athos.

Zorro me llamará para actualizar la información desde Monte Athos (si es posible) y voy a actualizar este blog en consecuencia.

73´s, Luis EA1CS

Posted at: April 22, 2014 09:02 PM

G3XBM (Roger)

HF wire fallen down

My Par 10/20/40m end-fed has, this afternoon, fallen down, explaining the high SWR on 10m just now. I think I must have knocked it when seeing if the brackets and pole for the 2m/70cm yagi will fit OK outside the guest bedroom window (they will).   My son, or maybe Andrew G6ALB, will be asked to help re-erection. It has come adrift at the 40m trap I think, so should be easy to fix.  Just need to remake the joint and ask someone to climb a tree (with a small ladder) to tie the end off.  I am just too wobbly for ladders, more is the pity.

I was thinking of fitting the wall brackets for the 2m/70cm antenna myself, but this will prove too hard in my current poor state of health I have decided. I am too clumsy and wobbly (stroke).

For the coming days I'll have to concentrate on 472kHz instead using the earth-electrode antenna.

Interestingly, by about 1516z, there were no USA or Canadian stations being copied here but I was getting/giving decent spots into South America, even with the antenna half down and a poor match on 10m. It appears there was some 10m propagation to the USA for others.

Posted at: April 22, 2014 08:00 PM


5Z4/JH0CJH, Kenya


Me llamo Toru JH0CJH y estaré en Nairobi del 24 de abril al 3 de mayo 2014 operando como 5Z4/ otra
vez desde allí.

QRV de 10 a 40mts principalmente en Cw.

Qsl vía h. call buro o directa.

73´s, Luis EA1CS

Posted at: April 22, 2014 07:44 PM

RI0F/P, AS-062

Aunque en la web no queda claro que isla en concreto van a activar, si es evidente que pertenece al grupo de las ials Kuril, AS-062, con todas las reservas este es un pequeño resumen. 

Queridos amigos tenemos que anunciar que estamos planificando una expedición a una isla perteneciente a las islas Kuril, AS-062. Es una de las partes más difíciles de Rusia para la activación.

estamos tratando de conseguir un permiso especial de las autoridades para visitar las islas, que permanecen cerradas a las visitas del público.

QRV del 18 al 25 de junio 2014.

73´s, Luis EA1CS

Posted at: April 22, 2014 06:24 PM

AE5X (John)

Mountain Top Radio 2.0 available for order

UPDATE: Sold out in 15 hours. Steve KD1JV made his latest kit available for sale last night. The MTR (Version 2) is $155 postage paid ($165 for DX). This new kit differs from the original MTR in that is a 3-band rig for the builder’s choice of 17, 20, 30, 40 and 80 meters (80m components not included…

Posted at: April 22, 2014 03:30 PM


KH8/PA3EWP, KH8/DL2AWG y KH8/DL6JGN log online y OQRS

La foto es exclusiva de Dx World

Finalizada la operación,  hoy 22 de abril se han actualizado y activado el OQRS para comenzar a solicitar las Qsl de la operación, en la que entre los 2 operadores se realizaron casi 24.000 Qso.

73´s, Luis EA1CS

Posted at: April 22, 2014 03:02 PM

G3XBM (Roger)

6m super DX

The evening of June 25th 2007 was a very memorable one here: K1TOL (Lefty) was worked on 6m QRP CW from the old QTH when I was using just 2.5W from the FT817 to my V2000 vertical fed by a long and lossy length of RG58 coax. ERP could not have been more than 1W. His big antenna certainly helped, but this was a great contact in the log. The mode was multi-hop Es.

K1TOL's 6m QSL card

Posted at: April 22, 2014 03:01 PM