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: Jamming Sound of Hope 6970 AM 2245 UTC 10 May2021  (Read 1390 times)

Offline Traveling Wave

  • DX Legend
  • ******
  • Posts: 1713
  • Western N.Y.
  • Nobody told me there'd be days like these
    • View Profile
    • Email
Jamming Sound of Hope 6970 AM 2245 UTC 10 May2021
« on: May 10, 2021, 2249 UTC »
2245 UTC - Strong Chinese jamming signal of S9+ from 6936 to 6986 kHz in WNY on SOH 6970 AM.
Location: Western New York ( Niagara Frontier)
Radio :TS480 with RTL-SDR pan-adapter, HDSDR software, Omni-Rig Control, Zenith T/O R600,T600
Antenna: 40m dipole, 20-17-15 meter fan dipole. One of N. Tesla's own prototypes. A high-powered mutant of some kind never even considered for mass production.
Knowledge is a deadly friend when no one sets the rules. The fate of all mankind I see is in the hands of fools - from Epitaph by King Crimson
eQSL appreciated KC2ZYL@gmail.com

Offline ~SIGINT~

  • DXing Phenomena
  • *******
  • Posts: 4103
  • N.E. Canada (FN08)
  • .ılılı..ılılı..ılılı..ılılı..ılılı..ılılı.
    • View Profile
    • Milspec Communication Canada
Re: Jamming Sound of Hope 6970 AM 2245 UTC 10 May2021
« Reply #1 on: May 10, 2021, 2256 UTC »
This is the Woodpecker which has been predominant in that area of the band over the past few days. I noted this on 08 May 2021 in the following post: https://www.hfunderground.com/board/index.php/topic,81369.msg265067.html#msg265067. If it is like the past few days, it will go off the air by 01:00 UTC. On 09 May 2021 the Woodpecker had ceased transmitting around 00:55 UTC.

Here it is today (10 May 2021) with the Sound of Hope carrier on 6970 kHz.



11 May 2021. There was no sign of the Woodpecker this evening.
« Last Edit: May 12, 2021, 0112 UTC by ~SIGINT~ »

Offline MDK2

  • Marconi Class DXer
  • ********
  • Posts: 6132
  • Denver, CO
    • View Profile
    • My radio reception videos
Re: Jamming Sound of Hope 6970 AM 2245 UTC 10 May2021
« Reply #2 on: May 11, 2021, 1728 UTC »
A couple of things. That's most likely a ute that isn't intended to jam anyone. I'm not a utility signal expert so I won't speculate what it is, just that that frequency is often occupied by this particular wide one.

SOH transmits on very low power, reportedly just 1 kW, and every broadcast is jammed by a transmission of China National Radio 1 coming at much MUCH higher power - I'd guess 500 kW minimum, and possibly from more than one tx site at a time. Nobody is copying SOH or detecting their carrier. It's always CNR1. The presence of this ute is coincidental.
Denver, CO.
SDRPlay RSPdx & RSP2pro, Airspy Discovery HF+, Icom IC-7100, Grundig Satellit 750, Realistic DX-300, Tecsun PL-600.
MLA-30 active loop, G5RV dipole.
eQSLs appreciated wickerjennie at gmail

Offline Ron - Calif.

  • Hero Member
  • *****
  • Posts: 574
    • View Profile
Re: Jamming Sound of Hope 6970 AM 2245 UTC 10 May2021
« Reply #3 on: May 17, 2021, 1336 UTC »
SOH on May 16. Checking just a few miscellaneous frequencies:
 
16299.75, SOH heard with very poor reception (no jamming) at 1007 UT; whereas before 1000, heard strong CNR1 jamming on 16300.0
(// 6125.0), as well as a slight het from off frequency SOH, which at times heard with extremely weak audio underneath; later check at
1110, found CNR1 again jamming here with a strong signal and again slight het.
 
At 1011 UT, SOH in the clear (no CNR1 jamming) on 6214.96v (often observed here on different days with slightly different frequencies!)
// 6230.0 // 6280.0 // 6370.1 // 6900.0 // 6970.08, with the news in Chinese. Obviously many of the SOH frequencies are slightly off
frequency, which helps to ID them, as the CNR1 jamming is on exact frequency.