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Author Topic: DDK9 Silent (Mark or Space only)  (Read 687 times)
VK5EEE
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Posts: 1187




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« on: November 18, 2017, 04:00:30 AM »

DDK9 is sending continuous (space) on 10101.025 with (mark) on 10100.575 absent.

Can anyone in Europe verify other frequencies if this is just DDK9 or if all transmissions are silent for some reason?

Other RTTY 24 hour frequencies are: 147.3, 4583, 7646, 11039, 14467.3 kHz
All 50 Baud, 450 Hz shift. Anyone hearing any of them working or all are idle?
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Long Live Real Human CW and wishing you many happy CW QSO - 77 - CW Forever

Support CW and join CW clubs. QTT: FIST#1124, HSC#1437, UFT#728, RCWC#982, SKCC#15007, CWOPS#1714, 30CW#1,
G4LNA
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Posts: 148




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« Reply #1 on: November 18, 2017, 04:40:15 AM »

I can hear it on 30M, the transmitter is probably busted, or the computer that drives it.
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G4LNA
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Posts: 148




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« Reply #2 on: November 18, 2017, 04:43:15 AM »

The other two HF frequencies on 4583, 7646 appear to be working, can't hear the VHF one because it's out of range.
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VK5EEE
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Posts: 1187




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« Reply #3 on: November 18, 2017, 07:18:44 AM »

The other two HF frequencies on 4583, 7646 appear to be working, can't hear the VHF one because it's out of range.
Thanks OM, well it has to break down some time eh, it seems to be on 24/7/365 without break. I remember once noticing it was off air, confirmed, now something else has broken, well perhaps hams will be using 10100.5 it is nice and quiet there  Cheesy
The other one wasn't VHF but LF kHz not MHz, you can hear that one in England if you have a LW RX, it's the RTTY right down the bottom end of the LF. I remember it from when I was in Europe. Is LW still being used for broadcasts? BBC4 was 200 then 198, is it still there?
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Long Live Real Human CW and wishing you many happy CW QSO - 77 - CW Forever

Support CW and join CW clubs. QTT: FIST#1124, HSC#1437, UFT#728, RCWC#982, SKCC#15007, CWOPS#1714, 30CW#1,
G4LNA
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Posts: 148




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« Reply #4 on: November 18, 2017, 08:44:34 AM »

The Droitwich transmitter is still operational, just, once the last of the bottles go pop then it will be no more, the historic site will close.

I often see the masts when I drive up and down the M1.

https://www.theguardian.com/media/2011/oct/09/bbc-radio4-long-wave-goodbye
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VK5EEE
Member

Posts: 1187




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« Reply #5 on: November 18, 2017, 07:13:39 PM »

The Droitwich transmitter is still operational, just, once the last of the bottles go pop then it will be no more, the historic site will close.

I often see the masts when I drive up and down the M1.

https://www.theguardian.com/media/2011/oct/09/bbc-radio4-long-wave-goodbye
A very interesting read, thank you! They say they bought up the remaining tubes in the world (of that spec) but did not say how many, nor, do we presumably know how many have blown since. That part seems to be a bit secret. One meter tall valves!!!

So by the sound of it, at any moment, it (500kW Droitwich) could go silent without warning. There are two 50 kW transmitters in Scotland that would still be there but no doubt be switched off soon after.
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Long Live Real Human CW and wishing you many happy CW QSO - 77 - CW Forever

Support CW and join CW clubs. QTT: FIST#1124, HSC#1437, UFT#728, RCWC#982, SKCC#15007, CWOPS#1714, 30CW#1,
M0LEP
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Posts: 493




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« Reply #6 on: November 19, 2017, 07:31:27 AM »

We had a talk at a local radio club from a guy (now, sadly SK) who used to make a living repairing large valves. Fascinating process.
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