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.

Author Topic: 325 hz Tone, 7310 kHz AM, 12/14/2020 0930z (+)  (Read 1473 times)

Offline Rizla

  • Full Member
  • ***
  • Posts: 239
  • Sonoran Desert, AZ
    • View Profile
325 hz Tone, 7310 kHz AM, 12/14/2020 0930z (+)
« on: December 14, 2020, 1018 UTC »
Not sure if I'm missing something. This tone was strong at my QTH and Kiwi SDR's in Nevada, Alberta CA, and Missouri. Seems to be gone as of 1000z.

Hopefully these links work...

Audio:
https://www.dropbox.com/s/r4tm8jdcj8qw2qp/12.29.214.134_2020-12-14T09_26_46Z_7310.00_am.wav?dl=0
Screenshot:
https://www.dropbox.com/s/joq6sg1uyo4mcyq/Screenshot%20from%202020-12-14%2002-29-01.png?dl=0
QTH: Sonoran Desert, AZ. Kenwood TS-820S, FT-891, Tecsun 880, neophyte in a forest of antenna wire.

Offline PresentedIn4D

  • Full Member
  • ***
  • Posts: 187
  • Syracuse, NY
    • View Profile
Re: 325 hz Tone, 7310 kHz AM, 12/14/2020 0930z (+)
« Reply #1 on: December 15, 2020, 1536 UTC »
Sounds like the lower sideband of a DRM signal running in its 5khz usb mode. I believe 7315 is a WINB frequency, and WINB uses that DRM mode...The screenshot sure looks like that, too.
« Last Edit: December 15, 2020, 1538 UTC by PresentedIn4D »
Syracuse, NY // FN13ua
40m Doublet + WiNRADIO Excalibur / Kenwood TS-2000
qsl @ presentedin4d at gmail . com

 

HFUnderground T-Shirt
HFUnderground T-Shirt
by MitchellTimeDesigns