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Low Frequency Radio Transmission

AncientMariner
The annual Christmas Eve message will be transmitted in Morse code on December 24th at 08:00 utc (UK Time) on 17.2 kHz. Tuning up commences at about 07:30 utc.

If interested and you do not have a suitable receiver in the conventional sense, you can use the sound card in your pc and this software https://sites.google.com/site/sm6lkm/saqrx/ together with a decent length of wire.

The transmission will be screened live at  YouTube Channel.

Clive

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  • 0
    You are a bit on the high side with 14 kHz Mike!


    Omega main frequency was 10.2 kHz with 11.05 kHz 11.3recurring kHz and 13.6 kHz Secondary frequencies used for lane identification. Each of the eight stations also had a unique frequency (11.8 kHz 12.0 kHz 12.1 kHz 12.3 kHz 12.8 kHz 12.9 kHz 13.0 kHz 13.1 kHz) as a station identifier, but the receivers I had dealings with were either Redifon which just received 10.2 kHz or the JRC set which used 10.2 kHz and the Secondary frequencies.


    14.881091 kHz was used by the USSR and then Russia for their navigation system along with some other odd-ball frequencies (13.28125 kHz, 12.648809 kHz and 11.904761 kHz).  The Omega frequencies having a nice mathematical relationship.


    Whilst currently I cannot hear or see and of these frequencies on my SpectraVue display, that does not mean that the system has been closed down. It has gone quiet before. Omega closed in 1997 and Decca Navigator which used frequencies between 70 and 129 kHz closed down in spring 2000.


    Re Radio 4 - Back in 2011 it was reported that the station life was down to the remaining life of the output valves. https://www.theguardian.com/media/2011/oct/09/bbc-radio4-long-wave-goodbye they must have found some more perhaps?  There was also a discussion here. 

     https://www2.theiet.org/forums/forum/messageview.cfm?catid=205&threadid=43741&STARTPAGE=1&FTVAR_FORUMVIEWTMP=Linear


    Clive
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  • 0
    You are a bit on the high side with 14 kHz Mike!


    Omega main frequency was 10.2 kHz with 11.05 kHz 11.3recurring kHz and 13.6 kHz Secondary frequencies used for lane identification. Each of the eight stations also had a unique frequency (11.8 kHz 12.0 kHz 12.1 kHz 12.3 kHz 12.8 kHz 12.9 kHz 13.0 kHz 13.1 kHz) as a station identifier, but the receivers I had dealings with were either Redifon which just received 10.2 kHz or the JRC set which used 10.2 kHz and the Secondary frequencies.


    14.881091 kHz was used by the USSR and then Russia for their navigation system along with some other odd-ball frequencies (13.28125 kHz, 12.648809 kHz and 11.904761 kHz).  The Omega frequencies having a nice mathematical relationship.


    Whilst currently I cannot hear or see and of these frequencies on my SpectraVue display, that does not mean that the system has been closed down. It has gone quiet before. Omega closed in 1997 and Decca Navigator which used frequencies between 70 and 129 kHz closed down in spring 2000.


    Re Radio 4 - Back in 2011 it was reported that the station life was down to the remaining life of the output valves. https://www.theguardian.com/media/2011/oct/09/bbc-radio4-long-wave-goodbye they must have found some more perhaps?  There was also a discussion here. 

     https://www2.theiet.org/forums/forum/messageview.cfm?catid=205&threadid=43741&STARTPAGE=1&FTVAR_FORUMVIEWTMP=Linear


    Clive
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