Theory vs reality
VOACAP vs. live spots on one map
Dashed arcs show where the official VOACAP model says the band should work from your current QTH. Solid live spots show where stations are actually being heard. Gaps between the two are where things get interesting.
VOACAP arcs enabledBest on 10m, 15m, 20mUses current UTC hour
VOACAP layer
Dashed lines are generated from the official VOACAP point-to-point engine and colored by reliability.Live spots
Spot markers remain the ground truth. If a spot lands outside the predicted arc, the band may be getting help from short-term or exotic propagation.Best use
Start on 20m, then switch to 15m and 10m when solar flux is strong. Use the map control dock to toggle the overlay on and off instantly.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.
H: 60%C: 50px
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
Grayline
Calculating window
Next window in --
Target
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Local time
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.
H: 60%C: 50px
10m Tactical View (MapLibre)
Heatmap
Clusters
H: 60%C: 50px
Station QTH
DEFAULTMaidenhead Grid
EM15
LAT: 38.00°LON: -97.00°
Band Conditions
160m
1.8 MHzFAIR
80m
3.5 MHzFAIR
60m
5.3 MHzFAIR
40m
7 MHzFAIR
30m(W)
10.1 MHzFAIR
20m
14 MHzFAIR
17m(W)
18.1 MHzFAIR
15m
21 MHzFAIR
12m(W)
24.9 MHzFAIR
10m
28 MHzFAIR
6m
50 MHzFAIR