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Spots
Prediction
How To
Point to Point
Area
Contest
Area
◀
-- UTC
▶
BCR
SNR
PR
Opacity
Resolution
Low (15°)
Medium (10°)
High (5°)
Very High (2°) ⚠ slow
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Location
TX Latitude (decimal °, N positive)
TX Longitude (decimal °, E positive)
Antenna
TX Antenna Type
Isotropic
TX Antenna Gain (dBi)
RX Antenna Gain (dBi)
Time & Solar Activity
Year
Month
— select —
January
February
March
April
May
June
July
August
September
October
November
December
Initial Display Hour (UTC, 0–23)
SSN / R12 (smoothed sunspot number)
Frequency
Frequency (MHz)
Signal
TX Power (Watts)
Signal Type
WSPR (BW: 2500 Hz / SNR: -29 dB)
FT8 (BW: 50 Hz / SNR: -3 dB)
CW (BW: 500 Hz / SNR: 0 dB)
SSB Usable (BW: 3000 Hz / SNR: 6 dB)
SSB Marginal (BW: 3000 Hz / SNR: 15 dB)
Noise
Noise Environment
City (~73 dB)
Residential (~62 dB)
Rural (~53 dB)
Quiet Rural (~43 dB)
Quiet (galactic noise only)
Noisy
Run Prediction
Results
Copy to Clipboard
Download CSV
Download Area Map
Whole Map (360° × 180°)
Surrounding Area (±90° lon, ±45° lat from TX)
Custom bounds
Lat min
Lat max
Lon min
Lon max
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