Path Calculator
Analyze microwave propagation between two points
Link Summary · 10 GHz
Distance
25 mi (40 km)
Bearing
137.8°
Terrain
BLOCKED
Propagation
76/100
GOOD
HRRR Data
9 / 9 points
Loss Budget · 10 GHz
FSPL (free-space)
144.5
dB
Gaseous (O₂+H₂O)
0.3
dB
Diffraction loss
68.3
dB
TOTAL PATH LOSS
213.1
dB
Gas rate: 0.0070 dB/km
H₂O: 0.0000 dB/km/g ·
O₂: 0.0070 dB/km
Abs humidity avg: 12.6 g/m³
Power Budget
TX Power
20.0
dBm
(100.0 mW)
TX Ant Gain
30.0
dBi
Feed Loss (×2)
-2.0
dB
EIRP
48.0
dBm
Path Loss (w/FF)
-213.1
dB
RX Ant Gain
30.0
dBi
RX Power
-135.1
dBm
Sensitivity (CW)
-141.0
dBm
MARGIN
4.9
dB
Path Weather Avg
Temperature
75.1°F
23.9°C
Dewpoint
59.4°F
15.2°C
T/Td Gap
15.6°F
Abs Humidity
12.6 g/m³
Pressure
985.1 mb
PWAT
22.5 mm
BL Depth
297.9 m
Refrac Gradient
-91.5 N/km
Propagation Factors · 10 GHz
Rain
100
Humidity
90
PWAT
90
Pressure
82
T-Td Depression
70
Refractivity
68
Season
68
Time of Day
55
Sky Cover
50
Wind
50
Atmospheric Profile
HRRR (3 km) Valid 2026-05-15 08:00 UTC 9 path samples| Point | Lat, Lon | Temp | Dewpt | Press | HPBL | PWAT | Ns | dN/dh |
|---|---|---|---|---|---|---|---|---|
| Source | 33.4, -96.9 | 23.7°C | 15.3°C | 986.5 mb | 339.3 m | 23.5 mm | 334.5 | -81.8 |
| 13% | 33.4, -96.9 | 23.7°C | 15.3°C | 986.5 mb | 339.3 m | 23.5 mm | 334.5 | -81.8 |
| 25% | 33.3, -96.8 | 23.7°C | 15.3°C | 986.5 mb | 339.3 m | 23.5 mm | 334.5 | -81.8 |
| 38% | 33.3, -96.8 | 24.1°C | 14.8°C | 985.1 mb | 282.1 m | 21.9 mm | 332.4 | -64.2 |
| Midpoint | 33.3, -96.8 | 24.1°C | 14.8°C | 985.1 mb | 282.1 m | 21.9 mm | 332.4 | -64.2 |
| 63% | 33.2, -96.7 | 24.1°C | 14.8°C | 985.1 mb | 282.1 m | 21.9 mm | 332.4 | -64.2 |
| 75% | 33.2, -96.7 | 23.6°C | 14.9°C | 985.3 mb | 283.7 m | 22.0 mm | 333.0 | -68.1 |
| 88% | 33.2, -96.7 | 24.1°C | 16.0°C | 987.4 mb | 266.6 m | 22.0 mm | 339.6 | -91.5 |
| Destination | 33.1, -96.6 | 24.1°C | 16.0°C | 987.4 mb | 266.6 m | 22.0 mm | 339.6 | -91.5 |
Midpoint vertical profile
18-Hour Propagation Forecast · 10 GHz
→ Steady
Best:
83
at 10:00 UTC
Worst:
68
at 22:00 UTC