HF “blackout” today

Discussion in 'Ham Radio Discussions' started by K3PI, Jul 3, 2021.

ad: L-HROutlet
ad: l-rl
ad: l-BCInc
ad: Left-2
ad: L-Geochron
ad: abrind-2
ad: Left-3
ad: L-MFJ
  1. W0JKT

    W0JKT Premium Subscriber QRZ Page

    It got to X class its reported - the first X class since 2017. Dear Sun is waking up although still haven't got to the terminator yet to end Cycle 24 as 25 starts up.
  2. KG2RG

    KG2RG Ham Member QRZ Page

    It was like an off switch, total blackout, band just gone!
    W4NNF likes this.
  3. WA9SVD

    WA9SVD Ham Member QRZ Page

    S8 is :eek:"barely readable?":confused:
    KO4PYL, K1OIK and N3FAA like this.
  4. KG2RG

    KG2RG Ham Member QRZ Page

    I was recording ECARS in the post RF blackout and I think I heard you checking in with your 80m am report.
    That was incredible. I posted the video on my YouTube. Thought my radio died.
    KC2RGW likes this.
  5. KC2RGW

    KC2RGW Premium Subscriber QRZ Page

    On AM it is, particularly daytime noise floor. Nowhere near the S/N of SSB.
  6. W5BIB

    W5BIB Premium Subscriber QRZ Page

    Was amazed to call CQ & see this spot on the RBN this morning @ 0745 LT (1245z) on 30m ! :eek: //100w & 80m OCFD @ 20ft//

    [​IMG] VK4CT [​IMG] W5BIB 10124 CW CQ 8 dB 23 wpm 1245z 03 Jul 6 hours ago

    THAT doesn't happen very often !! - THIS must've been just before the bottom dropped out on all of the bands...

    Been horrible condx all day, all bands since then... :(
    Last edited: Jul 3, 2021
    KO4PYL and W4NNF like this.
  7. WA9SVD

    WA9SVD Ham Member QRZ Page

    Guess that depends upon where you are located.:rolleyes: (I only get S2-S3 background on 80/75 Meters.)
  8. AG7JN

    AG7JN Ham Member QRZ Page

    Same here. I went outside to make sure the antenna was still up!
  9. W0JKT

    W0JKT Premium Subscriber QRZ Page

    This is a summary I wrote for some non ham groups:

    Huge Radio Blackout 10:30 AM EDT 7/3/2021

    We had a huge X class flare (largest) hit the earth causing a radio blackout. First time since 2017 a flare that large. Unlike some eruptions that take a few days to reach earth, the huge flare was spotted by satellites immediately and took only 8 minutes to reach earth. The blackout took out most of North America all the Atlantic and Western Europe and Africa.

    “In the past strong flares and CMEs have produced widespread power outages and communications blackouts. There is some concern that we are overdue for a catastrophic solar storm which could do unprecedented damage to power grids on the ground and the record number of satellites now in orbit, potentially crippling systems on the ground that rely on satellite communications.” Forbes 7/3/2021

    Hams are talking about how they thought radios went dead or antennas fell down since all of a sudden strong signals and entire bands disappeared. GPS was probably interrupted but was mostly on HF so probably did not wipe out police/fire radios on higher UHF frequencies less affected by Solar activities.

    I was talking to lots of strong stations in Europe until about 4 AM MST before the flare. Worldwide propagation has been good with rising solar cycle 25 and flux index getting into the 90s making the ionosphere more electron-dense so easier to bounce signals off it often going 3000 km or more.

    The flare only lasted 30-60 min and now mostly back to normal

    Forbes just reported it as potentially causing power grid interruptions etc
    “All this means it’s worth heeding Phillips’ warning that stronger flares are likely on the way in the coming months.
    Dave WØJKT
  10. K3DCW

    K3DCW QRZ Lifetime Member #212 Volunteer Moderator Platinum Subscriber Life Member QRZ Page

    Give it some time and the "RF Seismograph" team will find some way to tie the event to a 1.3 magnitude earthquake located who-knows-where. :rolleyes:
    AD5HR, WA9SVD, N3FAA and 3 others like this.

Share This Page