Grimeton Radio Station - My Alexanderson Day visit on July 3 2011

[@G0IMB]

I like this because the HF alternator is the only pre valve technology capable of transmitting a pure clean cw signal. May Grimeton and SAQ carry on for many years and well beyond my lifetime:-))

[@nablaman]

@rapidrory It is a 200 kW machine designed for telegraphy communication with New York. This type of ulta-low-frequency transmitter has very long range due to reflexions in the ionosphere and in salt water.

[@K7AGE]

Big power, big machines. Outstanding

[@AndyNechaevskyUU1CC]

Looks very familiar. It seems that I saw exactly this radio on some old photos, or so.. But those alternators noise! It can't be seen on a picture.

[@K7AGE]

Watch the video. Several people are wearing hearing protection.

[@AndyNechaevskyUU1CC]

I saw it! Lucky me - my laptop has a really tiny speakers :)

[@bbe103]

Have been there last summer. Very impressive!

[@buddy087]

Thanks for the tour of a piece of great history..As a radio ham its good to see how the old stuff worked and the engineering involved. -.-. --.- -.-. --.-

[@mikepayne377]

Thank you very much for sharing this. I also watched the companion video as well, and am blown away by the preservation of history. It is truly amazing.

[@palme9036]

The best report i have ever seen on SAQ, thank you so much!

[@fourfortyroadrunner6701]

Holy ALTERNATOR, Batman!! I've read and seen photos of this, had no idea it still existed.

[@yo6octhamradio897]

Beautiful and educational presentation, thank you very much !

[@michaelzehrfeld7766]

Thank you for this perfect documentation!

[@berndp3426]

I think this is s documentation of a private visit. so it's about the machine, its impressive appearance and about hauling it up on that day (takes place at least twice a year, which is on alexanderson's day and on christmas eve also). So not about history and who invented it. Just to be impressed by the machine and by the fact that it still works. And by knowing that messages which are sent off from here, can be received almost around the whole globe. By people having a VLF receiver. Or also by those owning a computer with a modern soundcard, a piece of free reception software and just a piece of some meters of longwire attached to its Microphone input (middle hot pin). This serves as a VLF receiver as well.

[@gabrielion8448]

Wow, that's amazing !!!

[@wastl700]

Thanx a lot for upload this video clip....

[@nablaman]

I think they will transmit on July 1. Do a google search for grimeton radio station to get the exact time!

[@sheps145]

Amazing video! I think if it was still this much ballache to send a text message less people would bother!

[@nablaman]

@radiolok Actually this is only a transmitting station, there is no way of receiving a response here. The receiving station was at a different location in Sweden. This station was mostly used to send telegrams to the US. It is located at the place on the Swedish west coast where there is an almost uninterrupted line across the Atlantic to New York (below Norway and above Britain). Yes, it's extremely noisy but that's part of the beauty! :)

[@strassenbahntk]

Thanks a lot for this excellent documentation!

[@depositomoenda]

TRADUÇÃO PT BR Minha visita à única estação de rádio transatlântica Grimeton SAQ em Grimeton, Varberg, Suécia. Esta estação de rádio do Patrimônio Mundial foi construído em 1924, na era pré-eletrônica. Em vez disso, ele gera a sua onda portadora de 17,2 kHz por meios puramente mecânicos, utilizando um gerador de corrente de alta velocidade enorme alternada (um alternador Alexanderson). É o único dispositivo desse tipo no mundo, e é totalmente operacional. Ele é iniciado algumas vezes por ano, e é uma experiência maravilhosa para vê-lo ganhar vida. Eu visitei a estação, pelo menos uma vez por ano para isso. Este vídeo foi filmado em 3 de Julho de 2011, e dispõe de arranque, transmissão e desligamento da máquina pelos entusiastas locais, muitos deles ex-funcionários da estação, que ainda se importam com a máquina única.

[@AlexBurtonMusic]

I still don't understand how the continuous wave is created. Does the electricity produced by the alternator produce a continuous wave when the capacitor is not connected? Like spark gap transmitters but capasitors are not connected.

[@ArtemKashkanovLive]

It's realy Great! But how operator hear respond signal in headphones? :) There is very loud inside.

[@impavidus87]

Thanks for posting the informative video.

[@nablaman]

@P55CxE9 Det ska tydligen gå att plocka upp signalen med ett vanligt ljudkort. Kolla på föreningen Alexanders hemsida för mer info! 127 meter är förresten höjden på tornen, inte våglängden.

[@H3adcrash]

I listened to grimeton today! :D

[@moabebezerrajunior1738]

Very Nice vídeo !!

[@STREETTV26]

Perfect documentation ,thnx and 73 de 7x2gk

[@SemperArdens1]

Grimeton Radiostation er et unikt link i historien om det moderne informationssamfunds kommunikationssystem. Radiostationen åbnede for telegramtrafik med Amerika i 1924 og er optaget på UNESCO' s Verdensarvliste.

[@Charkel]

1:07 Now that's what I call watercooling

[@nightowlandy]

Did he just key through what he wanted for dinner?

[@Paul-gz5dp]

What would really be interesting is to see a computer sending the code instead of a guy sitting at a desk... One thing comuters do better than people is timing and working long hours. Glad to see that this unique transmitter is still around. As it shows that we don't need electronics to do things such as send out radio waves. I have read about such alternators, but never seen a video or picture of one of those machines. BTW neon bulbs can also be used with tubes to make electronic counters.

[@zqfan4238]

good

[@wjcroft72]

Paper tape readers were common in this era for automated morse sending. I believe the video even briefly shows some of them sitting on a shelf. But for a twice a year demo, the person keying the transmitter must feel a great privilege.

[@lowpricedpaint]

You needed to go through all that, just to send morse code? Incredible the size of things back in those days. I hope them old timers are training someone to take over after they are gone, it's a great piece of history.

[@mfbfreak]

To make it cross the atlantic - yes. For regional use (let's say up to 250km) you could have a transmitter that fits on a desk. But those would be spark gap transmitters or a very early tube transmitter.

[@ppggjjtt]

super, parada

[@nablaman]

@sk7ca Cool! :)

[@allanegleston4931]

this machine blurs between electric power station and radio station. long live tesla. kf6uxj / ex kae4466.

[@TARiKBMW]

Half-life episode 1 )))))

[@allanegleston4931]

this is where power house and radio station meet. 73 de kae4466 /kf6uxj