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SFI --K ---:-- UTC
Ionospheric Status: STABLE / NORMAL

Why are HF Bands Dead Today?

HF radio propagation can be severely disrupted by space weather. If the bands seem quiet, it's usually due to one of these three primary "propagation killers."

Geomagnetic
Kp 0
Quiet
Solar Flare
B1.0
Clear
Absorption
D-Layer
Active
This interactive map shows propagation layers for the selected band, including optional DX spot markers, a propagation heatmap overlay, grayline (day/night terminator), and an amateur radio Maidenhead grid.
10m Tactical View (MapLibre)
Live Data
Loading conditions…
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SFI
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K-Index
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SSN
Push Alerts
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Calculating window
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Local time
Shack display mode
This interactive map shows propagation layers for the selected band, including optional DX spot markers, a propagation heatmap overlay, grayline (day/night terminator), and an amateur radio Maidenhead grid.
10m Tactical View (MapLibre)
Heatmap
Clusters
H: 60%C: 50px
Station QTH
DEFAULT
Maidenhead Grid
EM15
LAT: 38.00°LON: -97.00°

Band Conditions

SFI context/What SFI means/Solar Cycle 25 tracker
160m
1.8 MHz
FAIR
80m
3.5 MHz
FAIR
60m
5.3 MHz
FAIR
40m
7 MHz
FAIR
30m(W)
10.1 MHz
FAIR
20m
14 MHz
FAIR
17m(W)
18.1 MHz
FAIR
15m
21 MHz
FAIR
12m(W)
24.9 MHz
FAIR
10m
28 MHz
FAIR
6m
50 MHz
FAIR