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: Ionospheric storm disturbing the GPS referenced oscillators ?  (Read 130 times)

Offline Ray Lalleu

  • Marconi Class DXer
  • ********
  • Posts: 36930
  • Western part of France
    • View Profile
All is in the subject line,
as we are still under that major disturbance,
and I can see unusual frequency moves on remote KiwiSDR here in Europe.

edit : some GPS referenced oscillators may be fooled by the bad ionospheric conditions,
OR they may also give up and revert to an internal quartz in place of the missing  GPS signals.
« Last Edit: May 14, 2024, 2237 UTC by Ray Lalleu »
D/E/F/G/It/Sp : Dutch/English/French/German/Italian/Spanish
+/- : about 0.02 offset, ++/-- 0.03/0.04 offset
Balanced wire antennas, wire lines and ATU
*** Mes pages ex-OEM : semaines des OC, radios-médias, techniques de réception, en français, demandez  les ! ***

Offline RobRich

  • DX Legend
  • ******
  • Posts: 1771
  • Tampa, FL USA
    • View Profile
Re: Ionospheric storm disturbing the GPS referenced oscillators ?
« Reply #1 on: May 12, 2024, 2048 UTC »
Quite possible. NOAA SWPC reports a 24-hour peak in the R3 radio blackout range, though there were some instances of near R4 levels. ~R4 can affect GPS systems.


It would not be surprising if isolated areas on the sunlit side of Earth might have reached even R4 given the considerable power of the recent CMEs.

There is a 75% forecast chance of R3-R5 levels through May 13 UTC.

Farmers in online communities all over the internet have been discussing the GPS outages, with some saying that they’ve been running into “very weird issues.”

Souce: https://www.404media.co/solar-storm-knocks-out-tractor-gps-systems-during-peak-planting-season/
« Last Edit: May 13, 2024, 0857 UTC by RobRich »
Tampa, FL USA | US Map Grid EL88
Airspy HF+ Discovery | KiwiSDR 2 | 2x Msi2500 Msi001 | 2x RTL-SDR V3 + NE602 | 2x RTL-SDR V4
148' Loop-on-Ground | 31' Vertical | 18' End-Fed Vertical | 9' NCPL | PA0NHC MiniWhip