Propagation: Grid CM87
Localized HF conditions for Maidenhead locator CM87. Coordinating at 37.50°, -123.00°. Updated with real-time telemetry from NOAA and DX cluster reports.
CM87 conditions are GOOD. Best bands: 10m, 12m, 15m, 17m, 20m. SFI: 145.
Regional Radar
SFI
145
K-Index
2 Kp
Center Coords
37.5, -123.0
Local Phase
Daylight
● Local Band Quality Scorings
10m
EXCELLENT
15m
EXCELLENT
20m
GOOD
40m
POOR
80m
POOR
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
-
K-Index
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SSN
Push Alerts
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 MHzOPEN
80m
3.5 MHzOPEN
60m
5.3 MHzOPEN
40m
7 MHzOPEN
30m(W)
10.1 MHzOPEN
20m
14 MHzOPEN
17m(W)
18.1 MHzOPEN
15m
21 MHzOPEN
12m(W)
24.9 MHzOPEN
10m
28 MHzFAIR
6m
50 MHzCLOSED