We seek to understand and document all radio transmissions, legal and otherwise, as part of the radio listening hobby. We do not encourage any radio operations contrary to regulations. Always consult with the appropriate authorities if you have questions concerning what is permissible in your locale.

« previous next »
Pages: [1]

Author Topic: 502 KHz UNID?  (Read 1109 times)

Offline DeepBlue

  • Jr. Member
  • **
  • Posts: 23
  • No matter where you go, there you are.
    • View Profile
502 KHz UNID?
« on: November 09, 2022, 0400 UTC »
Seems to be constantly repeating the same 2 tone type signal approx 10 sec duration over and over. I can't seem to find much if anything on 502KHz stations.  This is not CW. Maybe some new format for beacons I am not familiar with?

Hearing it at S7 in central Ohio, SRRPlay RSP2pro and RF Systems DX10 active antenna, 0358 Nov 9, 2022

Anyone?

Thanks.
Logged
1001001 SOS
1001001 in Distress

--------------------------------------------------
Receivers: Icom IC-R8600, Icom IC-R71A, SDRPlay 2 Pro, IC-R30,  IC-7300, IC-9700, 1937 Philco Tombstone (rebuilt by me)
Antennas: RF Systems DX-10 Pro and DX-500 actives, 6BTV +2, Antennacraft ST-2, 160m wire

Offline ~SIGINT~

  • DXing Phenomena
  • *******
  • Posts: 4269
    • N.E. Canada (FN08)
  • .ılılı..ılılı..ılılı..ılılı..ılılı..ılılı.
    • View Profile
    • Milspec Communication Canada
Re: 502 KHz UNID?
« Reply #1 on: November 10, 2022, 0132 UTC »
Have you tried 518 kHz? That is an international NAVTEX frequency (shore to ship). It's narrow, only about 40 kHz wide, but if you are using a wide filter on the receiver you might be picking it up.
Logged
Pages: [1]
« previous next »
 

HFUnderground T-Shirt
HFUnderground Garden Flag
by MitchellTimeDesigns