08:25 CET (07:25 UTC): Live video from World Heritage Grimeton Radio Station begins 08:30 CET (07:30 UTC): Startup of the Alexanderson Alternator SAQ from 1924. 09:00 CET (08:00 UTC): Transmission of a message from SAQ.
Пікірлер: 34
@camillalugnet15297 ай бұрын
Well done, once again! 🤩 Thank you to the whole team for a successful Christmas transmission and the incredible work you are doing with keeping our heritage alive together with us. Merry Christmas to you and your beloved once! ❤️ / The whole team at Grimeton World Heritage Foundation
@giottist36247 ай бұрын
Got it! With my self wound Antenna and my SDRplay near Bonn, Germany - Thank you for running this unique historic transmitter and give us that christmas present 👍
@leifanderspettersson30447 ай бұрын
Impressive!! I saw my sister daughter waving! 88 from ex SM7HUF, now watching youtube but can still read the morse code. Learned it in 1965 at Ing2, Eksjö. Merry Christmas from PA, USA🌲
@andyhowlett22317 ай бұрын
Received again with no problem on my Wellbrook loop and Winradio Excalibur. Signal at -100dBm, ten dB above local noise. Many thanks for the TX and a Merry Christmas to all!
@petersvan78807 ай бұрын
So happy to have found this wonderful video of this unique station. Also very happy to know it is kept in working order, an important part of radio history. Happy Christmas and best wishes for the new year!
@jessyflament7 ай бұрын
une merveille dingenierie ; fonctione encore apres tout se temps
@thomasschmidt5546Ай бұрын
Thats soo cool, absolutly amazing old machine, i love these machines a great thank you to all those make this possible to keep alive and keep running. wow
@Kw11617 ай бұрын
Merry Christmas and have a Happy New Year 🎉! Thank you for this wonderful transmission…73!
@alankwellsmsmba3 ай бұрын
Just happened upon this by chance, just marvelous. Thanks for your efforts.
@gpetters7 ай бұрын
Merry Christmas, Joyeux Noel, from Michelle and Geir (LA9ET), Norway / France
@brunom53337 ай бұрын
Excellente Video, Merci pour votre Partage Exceptionel ,Joyeux Noel a toute votre l'équipe, au Plaisir
@gonebamboo41167 ай бұрын
Merry Christmas everyone
@pd0oyf7 ай бұрын
Mooi weer te zien nadat we er zelf zijn geweest dit jaar
@MrKkprince7 ай бұрын
Big thumbs up for how You in Sweden respect such a fascinating piece of historic technological beauty. Meanwhile here in Italy , homeland of Marconi we switched off all the MW transmission and WE DESTROYED of the TX sties and related radiating towers ... literally...
@antoniodepaduasoaresfilhos68467 ай бұрын
Good morning... We enjoyed the broadcast here in Brazil, but I got the time of the online event wrong. I wish you all a Merry Christmas and congratulations on the work you do in Sweden together with UNESCO. Here in Brazil we affectionately call the transmitter "Godzilla Transmitter". God bless you all.
@jeffbetts27 ай бұрын
An excellent presentation! Merry Christmas.
@HelenaSJB7 ай бұрын
Good morning from Los Angeles. I missed it last night. Sorry about that.
@MissilemanIII7 ай бұрын
This is Wild 😮
@TheMicrochip0077 ай бұрын
Damn - I slept through the broadcast by an hour this year. Christmas usually starts with SAQ. This year, unfortunately, it has to go without. I wish you happy holidays and a successful new year.
@brettpitula73197 ай бұрын
Have a great one all, W6CAS
@nmgt10486 ай бұрын
How interesting radio communications were before vacuum tubes came out: Long wave frequencies generated by rotating machines with morse code signals. All electromechanical. The old Rocky Point and MacKay Radio stations must have been like that, I guess, because I have never been inside these places. In America they were called Alexanderson generators. The antenna consisted of miles of telegraph wire.
@Zoli0497 ай бұрын
I did not know that. When is the next broadcast expected? Thanks! Merry Christmas!
@Albrecht80007 ай бұрын
North thuringia, NO signal! 😞 Receiver: ICOM IC-R 8600, 16m long wire antenna (north-south) with balun. After christmas I ask an amateur colleague to help! Greetings from germany
@michaelaxt27947 ай бұрын
Grimeton Radio Station Crew! Ein Schönes Weihnachtsfest! Grüße Aus Deutschland Thüringen Am Kyffhäuser! Micha AxtOi!
@-kumaym84846 ай бұрын
Der SAQ I am a Japanese amateur radio operator. Excuse me, but how does Morse code turn on and off by emitting radio waves? A long time ago, when I was a student, I studied magnetic amplifiers.It seems like the switching action of a magnetic amplifier.Please let me know if you have any references.
@AlexanderSAQ6 ай бұрын
Here’s a simplified description of how the morse code is created when transmitting with SAQ: The Alexanderson alternator is supplying a magnetic flux with the frequency 17,200 Hz, or 17.2 kHz via 64 separate windings, each delivering 100V and 30A, which is led to two separate transformers in the high frequency amplifier. 32 leads are going to the first transformer and another 32 leads are going to the second transformer. Each transformer then has 32 individual primary windings, each of them electrically insulated from each other. 2000V is generated in the secondary winding of each transformer. The secondary windings from both transformers are connected in parallel and further connected to the antenna. However, there is also a third winding in each transformer, located between the primary and secondary winding. This winding can be supplied with 250V DC, 12A current (3kW), controlled by the morse key. When the morse key is up (no signal) the DC current is flowing through the third middle winding, reducing the amount of energy being induced from the primary to the secondary winding. At key-down, the current in the middle winding is blocked, and full power is induced into the secondary winding. So, at key-up there will be a very limited amount of energy going out into the antenna. The magnetic amplifier is simply “leaking” a little carrier wave, which can be detected if you have a sensitive receiver. In addition to the two transformers, there is a second system, also operated by the morse key, to alter the antenna resonance frequency. In the lower part of the “magnetic amplifier” two “transductors” are located. A transductor is a variable inductance, consisting of a primary winding for the AC and a secondary winding for DC, both placed around an iron core. The iron core works as an inductance for the AC winding, however when 250V 30A current is flowing in the DC winding, the iron core is magnetically saturated and thus reduces its inductance. The antenna is a resonant circuit with its resonance frequency set to 17.2kHz and the two transductors are connected inline with the antenna. This means that by key-up, the antenna is not tuned to the resonance frequency, due to the changed inductance in the two transductors. At key-down, the 250V 12A DC current is blocked, the inductance will be altered and the antenna will be in tune. Ernst Alexanderson invented this system, with all its components, to allow a relatively small DC current of 3kW to control a very large power of 200kW. Fredrik / Alexander association
@georgen.80277 ай бұрын
Centerfuuugal pump
@A7B8Q9D117 ай бұрын
❤❤❤❤❤👍👍👍👍👍👍👍
@johnopalko52237 ай бұрын
* Watching the transmitter being powered up * Me: I want one! Wife: Why am I not surprised? Good job, folks. 73 de N7KBT
@DM7JO7 ай бұрын
Thanks for all..73 de DM7JO
@tamasvarnai45727 ай бұрын
Hello! I receive the broadcast in Hungary at Lake Balaton. RECEIVER E530 SIEMENS, VOLNA K SOVIET! T- antenna. HA3KGX