Tom DF5JL
@tomdf5jl.bsky.social
We can be heroes, just for one day.
📻☀️❤️🎅🎄 MRY XMAS
Happy holidays to everyone! The next HF #Propagation Report will be available on December 29.
#spaceweather #hamradio #hamr
Happy holidays to everyone! The next HF #Propagation Report will be available on December 29.
#spaceweather #hamradio #hamr
December 24, 2025 at 6:47 AM
📻☀️❤️🎅🎄 MRY XMAS
Happy holidays to everyone! The next HF #Propagation Report will be available on December 29.
#spaceweather #hamradio #hamr
Happy holidays to everyone! The next HF #Propagation Report will be available on December 29.
#spaceweather #hamradio #hamr
HF #Propagation Report - Geomagnetic activity is mostly unsettled to active (Kp3-4), with the probability of a magnetic storm decreasing. Solar activity remains rather low (M30% X05% Proton01%), with propagation conditions moderate, tending to improve. Happy holidays. #spaceweather #hamradio #hamr
December 24, 2025 at 6:44 AM
HF #Propagation Report - Geomagnetic activity is mostly unsettled to active (Kp3-4), with the probability of a magnetic storm decreasing. Solar activity remains rather low (M30% X05% Proton01%), with propagation conditions moderate, tending to improve. Happy holidays. #spaceweather #hamradio #hamr
HF #Propagation Report - Geomagnetic activity is mostly unsettled to active (Kp3-4) due to a coronal hole. Although solar activity is low, isolated M-flares are possible (M 30% X 05% Proton 01%). Trend: increasing activity. Conditions are partly moderate, partly good. #spaceweather #hamradio #hamr
December 23, 2025 at 6:21 AM
HF #Propagation Report - Geomagnetic activity is mostly unsettled to active (Kp3-4) due to a coronal hole. Although solar activity is low, isolated M-flares are possible (M 30% X 05% Proton 01%). Trend: increasing activity. Conditions are partly moderate, partly good. #spaceweather #hamradio #hamr
HF #Propagation Report - Strong solar wind (>700 km/s) leads to unsettled to active geomagnetic activity (Kp3-4). The cause is a coronal hole in the southern hemisphere. Solar activity is moderate (M1.3 21/1827 UT), further M-flares are likely (M 25% X 01% Proton 01%). #spaceweather #hamradio #hamr
December 22, 2025 at 5:34 AM
HF #Propagation Report - Strong solar wind (>700 km/s) leads to unsettled to active geomagnetic activity (Kp3-4). The cause is a coronal hole in the southern hemisphere. Solar activity is moderate (M1.3 21/1827 UT), further M-flares are likely (M 25% X 01% Proton 01%). #spaceweather #hamradio #hamr
HF #Propagation Report - Solar winds are slightly elevated. Geomagnetic activity will be mostly quiet (Kp1-2), with isolated unsettled periods (Kp3). Solar activity will remain low, with only a very slight chance of an isolated M-flare (M 05% X 01% Proton 01%). #spaceweather #hamradio #hamr
December 20, 2025 at 7:25 AM
HF #Propagation Report - Solar winds are slightly elevated. Geomagnetic activity will be mostly quiet (Kp1-2), with isolated unsettled periods (Kp3). Solar activity will remain low, with only a very slight chance of an isolated M-flare (M 05% X 01% Proton 01%). #spaceweather #hamradio #hamr
HF #Propagation Report - Geomagnetic activity will be predominantly quiet to unsettled (Kp 2-3), with isolated active intervals (Kp4) expected. Solar activity is expected to remain weak overall, with a slight chance of isolated M-flares (M 15% X 01% Proton 01%). #spaceweather #hamradio #hamr
December 19, 2025 at 7:01 AM
HF #Propagation Report - Geomagnetic activity will be predominantly quiet to unsettled (Kp 2-3), with isolated active intervals (Kp4) expected. Solar activity is expected to remain weak overall, with a slight chance of isolated M-flares (M 15% X 01% Proton 01%). #spaceweather #hamradio #hamr
HF #Propagation Report - Geomagnetic activity will be quite variable due to fast solar winds (Kp2-4). Solar activity is expected to remain low overall, with a slight chance of isolated M-flares (M 15% X 01% Proton 01%). HF band conditions will remain moderate. #spaceweather #hamradio #hamr
December 18, 2025 at 6:27 AM
HF #Propagation Report - Geomagnetic activity will be quite variable due to fast solar winds (Kp2-4). Solar activity is expected to remain low overall, with a slight chance of isolated M-flares (M 15% X 01% Proton 01%). HF band conditions will remain moderate. #spaceweather #hamradio #hamr
HF #Propagation Report - Geomagnetic activity is expected to be predominantly quiet to unsettled (Kp2-3), with possible active phases (Kp4). Solar activity is low overall, with a low probability of isolated M-flares (M20% X01% Proton01%). Condx will remain moderate. #spaceweather #hamradio #hamr
December 17, 2025 at 8:15 AM
HF #Propagation Report - Geomagnetic activity is expected to be predominantly quiet to unsettled (Kp2-3), with possible active phases (Kp4). Solar activity is low overall, with a low probability of isolated M-flares (M20% X01% Proton01%). Condx will remain moderate. #spaceweather #hamradio #hamr
HF #Propagation Report - Geomagnetic activity is expected to be predominantly quiet to unsettled (Kp2-3), with possible active phases (Kp4). Solar activity is expected to remain low overall (M 20% X 01% Proton 01%). Conditions remain moderate due to low solar activity. #spaceweather #hamradio #hamr
December 16, 2025 at 6:12 AM
HF #Propagation Report - Geomagnetic activity is expected to be predominantly quiet to unsettled (Kp2-3), with possible active phases (Kp4). Solar activity is expected to remain low overall (M 20% X 01% Proton 01%). Conditions remain moderate due to low solar activity. #spaceweather #hamradio #hamr
HF #Propagation Report - Geomagnetic activity is predominantly quiet. Solar activity is low, with a low probability of isolated M-flares (M 25% X 01% Proton 01%). Due to the low level of solar activity, propagation is depressed on the high bands. #spaceweather #hamradio #hamr
December 15, 2025 at 6:14 AM
HF #Propagation Report - Geomagnetic activity is predominantly quiet. Solar activity is low, with a low probability of isolated M-flares (M 25% X 01% Proton 01%). Due to the low level of solar activity, propagation is depressed on the high bands. #spaceweather #hamradio #hamr
This does not look good, but rather indicates increased geomagnetic activity from around December 22 due to coronal holes. #spaceweather #hamradio #hamr
December 13, 2025 at 5:08 PM
This does not look good, but rather indicates increased geomagnetic activity from around December 22 due to coronal holes. #spaceweather #hamradio #hamr
HF #Propagation Report - Unstable to active geomagnetic conditions are generally expected, with the possibility of further isolated G1 storm phases (Kp5). Solar activity is low to moderate, with the possibility of isolated M-class flares (M55% X05% Proton05%). HPYWKND #spaceweather #hamradio #hamr
December 13, 2025 at 7:41 AM
HF #Propagation Report - Unstable to active geomagnetic conditions are generally expected, with the possibility of further isolated G1 storm phases (Kp5). Solar activity is low to moderate, with the possibility of isolated M-class flares (M55% X05% Proton05%). HPYWKND #spaceweather #hamradio #hamr
Confused by terms such as solar flux, relative sunspot number, or AP? Then try this: 3fs.net.au/making-sense... #spaceweather #hamradio #hamr
Solar indices - making sence of the numbers for radio propagation
Making sense of solar indices helps you get the most out of HF amateur radio. Sun activity determines what happens in the Earth's ionosphere.
3fs.net.au
December 12, 2025 at 7:29 AM
Confused by terms such as solar flux, relative sunspot number, or AP? Then try this: 3fs.net.au/making-sense... #spaceweather #hamradio #hamr
HF #Propagation Report - Due to CME effects, conditions are expected to be quiet to active today. However, isolated G1 storms are also possible. Solar activity is low to moderate with a low probability of M-flares (65%) and an even lower probability of X-flares (10%). #spaceweather #hamradio #hamr
December 12, 2025 at 7:24 AM
HF #Propagation Report - Due to CME effects, conditions are expected to be quiet to active today. However, isolated G1 storms are also possible. Solar activity is low to moderate with a low probability of M-flares (65%) and an even lower probability of X-flares (10%). #spaceweather #hamradio #hamr
December 11, 2025 at 9:22 PM
HF #Propagation Report - A coronal mass ejection (CME) arrived at 10/2000 UTC, resulting in a G2 magnetic storm (Kp6). Further magnetic storms are possible. Solar activity is moderate, with four small M-flares occurring within the last 24 hours (M 75% X 15% Proton 15%). #spaceweather #hamradio #hamr
December 11, 2025 at 5:55 AM
HF #Propagation Report - A coronal mass ejection (CME) arrived at 10/2000 UTC, resulting in a G2 magnetic storm (Kp6). Further magnetic storms are possible. Solar activity is moderate, with four small M-flares occurring within the last 24 hours (M 75% X 15% Proton 15%). #spaceweather #hamradio #hamr
HF #Propagation Report - The predicted CME appears to have passed Earth by. Geomagnetic activity is now expected to be mainly quiet for the next 3 days. However, isolated CME effects are possible. Solar activity has been moderate. Little change (M 65% X 15% Proton 15%). #spaceweather #hamradio #hamr
December 10, 2025 at 5:50 AM
HF #Propagation Report - The predicted CME appears to have passed Earth by. Geomagnetic activity is now expected to be mainly quiet for the next 3 days. However, isolated CME effects are possible. Solar activity has been moderate. Little change (M 65% X 15% Proton 15%). #spaceweather #hamradio #hamr
December 9, 2025 at 9:39 PM
December 9, 2025 at 5:51 AM
HF #Propagation Report - Over the next few hours, a coronal mass ejection is expected to arrive, which is likely to trigger magnetic storms. Solar activity is moderate, with further M-flares likely, as well as isolated X-flares (M 65% X 15% Proton 15%). #spaceweather #hamradio #hamr
December 9, 2025 at 5:27 AM
HF #Propagation Report - Over the next few hours, a coronal mass ejection is expected to arrive, which is likely to trigger magnetic storms. Solar activity is moderate, with further M-flares likely, as well as isolated X-flares (M 65% X 15% Proton 15%). #spaceweather #hamradio #hamr
HF #Propagation Report - At 0501 UTC, a X1.1 flare caused a R3 radio blackout over W-Australia and the Indian Ocean. The flare risk remains elevated (M65% X15% Proton15%). Geomagnetic activity is expected to be mainly quiet to unsettled (Kp2-3) with active intervalls. #spaceweather #hamradio #hamr
December 8, 2025 at 6:54 AM
HF #Propagation Report - At 0501 UTC, a X1.1 flare caused a R3 radio blackout over W-Australia and the Indian Ocean. The flare risk remains elevated (M65% X15% Proton15%). Geomagnetic activity is expected to be mainly quiet to unsettled (Kp2-3) with active intervalls. #spaceweather #hamradio #hamr
On 6 DEC, a powerful M-flare occurred towards evening, leading to a solar proton event (SPE). And this happened just two hours after the solar flare. A classic phenomenon, well worth a closer look: kurzwelleundmehr-blogspot-com.translate.goog/2025/12/wie-... #spaceweather #hamradio #hamr
Wie aus dem Schulbuch: Solar Proton Event (SPE)
Kurzwelle und mehr ... [HF/50MHz]
kurzwelleundmehr-blogspot-com.translate.goog
December 7, 2025 at 11:52 AM
On 6 DEC, a powerful M-flare occurred towards evening, leading to a solar proton event (SPE). And this happened just two hours after the solar flare. A classic phenomenon, well worth a closer look: kurzwelleundmehr-blogspot-com.translate.goog/2025/12/wie-... #spaceweather #hamradio #hamr
HF #Propagation Report - Geomagnetic activity will be unsettled with possible active intervals (Kp2-4), and solar activity moderate, with a continuing risk of isolated M-flares (M 70% X 15% Proton 10%). Conditions will be affected by CME effects late on Sunday. #spaceweather #hamradio #hamr
December 6, 2025 at 6:40 AM
HF #Propagation Report - Geomagnetic activity will be unsettled with possible active intervals (Kp2-4), and solar activity moderate, with a continuing risk of isolated M-flares (M 70% X 15% Proton 10%). Conditions will be affected by CME effects late on Sunday. #spaceweather #hamradio #hamr
Researchers describe a new method for investigating the stability of sunspots in Astronomy & Astrophysics. Analysis of polarized light shows that magnetic forces are precisely balanced by pressure forces, which explains the stability of spots lasting from days to weeks. #spaceweather #hamradio #hamr
December 4, 2025 at 9:48 AM
Researchers describe a new method for investigating the stability of sunspots in Astronomy & Astrophysics. Analysis of polarized light shows that magnetic forces are precisely balanced by pressure forces, which explains the stability of spots lasting from days to weeks. #spaceweather #hamradio #hamr
HF #Propagation Report - Solar wind speed is abt. 700 km/s due to coronal hole CH04/-. Geomagnetic activity is expected to be active up to G1/G2 (Kp5-6), later subsiding. Moderate to high solar activity continues to be forecast (M 75% X 30% Proton 15%). #spaceweather #hamradio #hamr
December 4, 2025 at 7:56 AM
HF #Propagation Report - Solar wind speed is abt. 700 km/s due to coronal hole CH04/-. Geomagnetic activity is expected to be active up to G1/G2 (Kp5-6), later subsiding. Moderate to high solar activity continues to be forecast (M 75% X 30% Proton 15%). #spaceweather #hamradio #hamr