1476 kHz

ratwolfratwolf
in Signals Received
What could that be at the sides of a radio station on 1476 kHz?

image

Attachments:
https://forum.kiwisdr.com/uploads/Uploader/e3/712a42709ffe83a8ee5aa0a6e0ad55.png

Comments

  • ratwolfratwolf
    Like a continuous beep received before 4 a.m. CET. Now it's gone.
  • jksjks
    That's the sound the computer program makes to try and wake up the late-night board op who's fallen asleep and let the programming run out..
    KA7U
  • ANgazuANgazu
    edited March 2019
    Can you, please, check the time pattern? 1s ON 1s OFF?
    or post a .wav recording instead.

    Best regards.
    ANgazu.
  • ratwolfratwolf
    wav seems not to be allowed

    Attachments:
    https://forum.kiwisdr.com/uploads/Uploader/19/7b6e6846302c02aba40f4a5208904b.zip
  • ANgazuANgazu
    edited March 2019
    Hello.
    Yes, Freq is 1000 Hz and time is 1s ON 1s OFF. Do not know where your KiwiSdr is located but the signal seems to be the one by DL2NDO from Germany.

    *******************************************
    From rsgb_lf_group:09 Nov 2018 01:01

    "After the sad demise of all LW and MW broadcasts in Germany, a handful of pioneers came up who are operating legal low-powered medium wave stations in the context of a radio museum or for educational purposes. One of them is Ralph (DL2NDO, one of the participants in the legendary Donebach 137 kHz activation in 2002). He has obtained a transmitting license for 1476 kHz (former frequency of Vienna Bisamberg), built a 3 Watt AM transmitter, and with the help of a small team raised a quarterwave antenna on the Fraunhofer premises south of Erlangen (JN59MN21HF).

    Yesterday they got on air for the first time, running a preliminary test transmission consisting of a switched 1000 Hz beeps (one second on, one second off, audio frequency locked to the RF carrier). This pattern will be continued for a few days, before they will eventually.take over the audio from the local DAB student radio "funklust".

    The current test pattern is relatively easy to make out in the noise so it may be a good chance for some DX detections. At night we've actually heard the beeps on Twente SDR and a couple of German Kiwi-SDRs. But I guess using narrowband signal processing techniques, the carrier and coherent tones coud make it much further. The carrier frequency is derived from an OCXO and is currently at 1476000.411 Hz.
    ******************************************
    Best regards.
    ANgazu.

    Attachments:
    https://forum.kiwisdr.com/uploads/Uploader/80/465cb1740585c6bc957784dfd10f2b.jpg
    HB9TMC
  • ratwolfratwolf
    I am located in Nuernberg, Germany. Antenna is a Wellbrook ALA1530LN on my balcony. Receiving conditions are not that good in the centre of town but the Wellbrook loop does a fairly good job. So it makes sense to receive the signal here. Actually when I took the screenshot the conditions were much better compared to the time when the audio was recorded.

    Best regards and thanks for the useful hint

    Ralf
  • ratwolfratwolf
    Just checked but this was already posted on November 2018 (A-DX Mailing-List). So they are still transmitting the test pattern?
  • ratwolfratwolf
    From Midnight to 05:00 a.m. they are transmitting the clocked signal. Antenna is a 40 Meter long wire diagonally up from 10 to 50 Meters.

    https://radiomuseum.org/forumdata/upload/turm%5Fmit%5Fdraht%2Ejpg
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