Loading ...
Sorry, an error occurred while loading the content.

Re: [perseus_SDR] Help me ID odd wideband signal [1 Attachment]

Expand Messages
  • Werner Karn
    Hi Lasse, this is over the horizon radar. They always use the muf maximum useable frequency ( as resolution is better the higher the frequency is ) and they
    Message 1 of 9 , Jan 31, 2013
      Hi Lasse,
      this is over the horizon radar. They always use the "muf" maximum useable frequency ( as resolution is better the higher the frequency is ) and they are always exactly on frequency transmitting in most cases 400 coherent carriers spaced at 50Hz each, giving a 20kHz bandwidth. You can see the carriers with Perseus, if you increase resolution bandwidth or have a look at the secondary window. You can even use this to calibrate your receiver, in your example you could use the " center carrier " at 21010,000 kHz.

      2013/1/31 clement F59465 <f59465@...>
      [Attachment(s) from clement F59465 included below]

      Hi Lasse,

      This 3 Radar

      Look here: https://www.youtube.com/watch?v=e43rXRcZPhs
      And here: https://www.youtube.com/watch?v=zupfLO1PjrA

      Often as 4 MHz...

      My screen shot:

      F59465 Clem

      2013/1/31 Lasse Moell <lasse.moell@...>
      [Attachment(s) from Lasse Moell included below]

      Spending the day at home with a running nose, I was listening on HF when
      I suddenly found this wide band signal on 21 MHz
      It lasted some 30 minutes. Anyone know what it might be?? Could see
      slight fading from time to time.

      /Lasse SM5GLC

      F59465 Clement

    Your message has been successfully submitted and would be delivered to recipients shortly.