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 permissable in your locale.

Author Topic: Unid Tones 6950 AM was FM 2008 UTC 18 DEC 2022  (Read 149 times)

Offline Skipmuck

  • Global Moderator
  • Marconi Class DXer
  • *****
  • Posts: 11350
    • View Profile
    • Email
Unid Tones 6950 AM was FM 2008 UTC 18 DEC 2022
« on: December 18, 2022, 2012 UTC »
2008 UTC A wideband signal I assume is FM. Sadly it's distorted as my NRD-515 doesn't receive FM
2010 UTC OFF
2013 UTC On again
At some point before 2017 switched from FM to AM with harmonic tones
2020 UTC OFF

Thanks for the tones!
« Last Edit: December 18, 2022, 2021 UTC by Skipmuck »
QSL's to poorbrookking >at< aol.com are greatly appreciated! All reception and postings using My radio, My antenna, and generally in real time(excluding posting of SSTV images!).
QTH:Springfield, MA
JRC NRD-515 with 43 meter half wave dipole into MFJ 949E Versa Tuner: also Grove SP-200 & SONY 2010's

Offline Molvania Poacher

  • DXing Phenomena
  • *******
  • Posts: 2791
  • New Hampshire
    • View Profile
Re: Unid Tones 6950 AM was FM 2008 UTC 18 DEC 2022
« Reply #1 on: December 18, 2022, 2020 UTC »

2019- Tones sounding like sirens (two of them simultaneously most of the time).
2020- Lost or Off.
All reception direct.
QTH New Hampshire (70 miles north of Boston).
Tecsun S-8800 and Kenwood R-2000, with MFJ-16010 tuner and about 135 feet of wire thrown up in the trees.
eQSLs most appreciated to molvaniapoacher@gmail.com.


Item image   Design of Phased Locked Loop Circuits, With Experiments by Howard M. Berlin