okay so i've been a ham for about 3 years now and i dont think ive ever seen 10 meters behave like this. fired up the rig last Tuesday around noon local time and the band was absolutely wall to wall with signals from europe and south america, like i couldn't even find a clear frequency. worked a couple guys in Brazil and one in Italy just running 100 watts to my dipole which honestly i thought was too low to bother with on that band most of the time.

checked the solar flux index and it was sitting around 210 or so which i guess is high? i've seen it mentioned before but i never really paid attention to what the numbers actually mean in practice. is this the kind of thing that just keeps getting better as we approach solar maximum or does it kind of bounce around unpredictably. also does higher flux always mean better DX or is it more complicated than that

yeah solar cycle 25 has really surprised a lot of people, the prediction models had it being pretty mild and its turned out way more active than expected. flux around 200+ is genuinely good territory, anything above 150 or so and 10m starts waking up, above 200 and you start getting those crazy conditions where even a modest station can work the world.

it does bounce around though, its tied to solar rotation so you'll often see flux rise and fall on roughly a 27 day cycle as active regions rotate into view. the kp index matters too — high solar flux is great but if a geomagnetic storm kicks up the kp goes high and can wipe out your HF propagation entirely even with good flux. so its sort of a combination of things. the DXMaps site and DX Summit are your friends for seeing whats actually open in real time rather than just guessing from the indices.

enjoy it while it lasts, cycle peaks dont go on forever and 10m can go dead as a doornail at solar minimum, some guys go years without working dx on that band

same here man, i worked like 14 countries on 10m last weekend and i'm only running a vertical. the South America stuff especially has been coming in super strong in the afternoons. i dont fully understand all the flux stuff either but i just watch the DX cluster and when i see a pile of 10m spots i just get on lol