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: North Korea's super white noise jamming of Brazil on 4885 kHz.  (Read 1177 times)

Offline Ron - Calif.

  • Hero Member
  • *****
  • Posts: 583
    • View Profile
Thanks to a timely tip from Amano (Japan), I found at 1010 UT, on Nov 8, that N. Korea's super white noise jamming is now
on 4885, totally blocking Brazil.
Probably only a temporary situation, as Echo of Hope - VOH is on 4890 for this week and the
jamming should eventually move up to that frequency. Time will tell as to what develops here.

It was on back on Sept 27, that I noted N. Korea had stopped broadcasting their super white noise jamming in the 49m band
(weekly alternating from 5990-5995-6000, as well as 6015 and also 6045). Had to wonder what was happening? Why the
sudden change and what were they going to do in the future? Now we know they plan to jam Echo of Hope - VOH, as they
alternate weekly between 4880-4885-4890. During the years that I have monitored VOH, had never heard 4880-4885-4890
jammed before by NK; yes, blocked at times by OTH radar QRM, but not jammed.

Nov 8 (Monday), Echo of Hope - VOH frequencies for this week: 3985 (CNR2 QRM) // 4890 (clear of the 4885 jamming,
but probably only a matter of time before the jamming moves up to 4890) // 5995 // 6255 // 6350 // 9105, at 0946 UT, with
pop song (Chicago - "Hard To Say I'm Sorry").

VOP, at 0950 UT on 3910 // 3930 // 4450 // 6520 // 6600; while 3480 remains silent.

Voice of Freedom, at 0956, on 6045; almost fair with moderate NK pulsating jamming (not super white noise jamming).

KBS Hanminjok Bangsong 1, at 0955, on 6015; fair with weak NK pulsating jamming (not super white noise jamming) underneath.

Offline Ron - Calif.

  • Hero Member
  • *****
  • Posts: 583
    • View Profile
Re: North Korea's super white noise jamming of Brazil on 4885 kHz.
« Reply #1 on: November 09, 2021, 1308 UTC »
Nov 9 (Tuesday) - As expected, the super jamming (ex: 4885) from N. Korea has followed with Echo of Hope - VOH up to 4890
today. Noted VOH at 1138 UT, with fairly strong jamming QRM; VOH with the usual weekday English language lesson; audio
feed from a TV program.

Offline Ron - Calif.

  • Hero Member
  • *****
  • Posts: 583
    • View Profile
Re: North Korea's super white noise jamming of Brazil on 4885 kHz.
« Reply #2 on: November 11, 2021, 1421 UTC »
Nov 11 observations:

KOREA SOUTH. Continuing with new developments:

Echo of Hope - VOH, again with two frequencies silent (5995 & 9105); while 3985 // 4890 // 6255 // 6350
were all on the air; at 1227 UT with pop Korean song (PSY - "Gangnam Style"); 1243, start of news program
in English and Korean.

Voice of the People, also with new developments; frequencies silent today - 3930, 3480 & 4450; while
3910 // 6520 // 6600 all active today.

Voice of Freedom (6045), at 1300 UT, with program "Haengboghan Daehanmingug" (Happy Republic of Korea); gave
English title of a Korean song ("Life Goes On" by BTS - Youtube - https://www.youtube.com/watch?v=-5q5mZbe3V8 );
good reception.