Path Calculator
Analyze microwave propagation between two points
Link Summary · 10 GHz
Distance
40 mi (64 km)
Bearing
36.5°
Terrain
BLOCKED
Propagation
79/100
GOOD
HRRR Data
9 / 9 points
Loss Budget · 10 GHz
FSPL (free-space)
148.6
dB
Gaseous (O₂+H₂O)
0.5
dB
Diffraction loss
74.1
dB
TOTAL PATH LOSS
223.1
dB
Gas rate: 0.0070 dB/km
H₂O: 0.0000 dB/km/g ·
O₂: 0.0070 dB/km
Abs humidity avg: 13.4 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)
-223.1
dB
RX Ant Gain
30.0
dBi
RX Power
-145.1
dBm
Sensitivity (CW)
-141.0
dBm
MARGIN
-5.1
dB
Path Weather Avg
Temperature
74.8°F
23.8°C
Dewpoint
61.0°F
16.1°C
T/Td Gap
13.8°F
Abs Humidity
13.4 g/m³
Pressure
986.8 mb
PWAT
23.7 mm
BL Depth
293.0 m
Refrac Gradient
-102.0 N/km
Propagation Factors · 10 GHz
Rain
100
Humidity
90
PWAT
90
T-Td Depression
85
Pressure
82
Refractivity
82
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 | 32.7, -97.0 | 23.2°C | 16.1°C | 991.5 mb | 262.9 m | 24.4 mm | 341.0 | -102.0 |
| 13% | 32.7, -97.0 | 23.7°C | 15.5°C | 993.7 mb | 268.9 m | 24.3 mm | 336.8 | -82.6 |
| 25% | 32.8, -96.9 | 24.2°C | 16.2°C | 991.3 mb | 300.0 m | 24.0 mm | 341.6 | -86.6 |
| 38% | 32.8, -96.9 | 23.7°C | 16.1°C | 993.0 mb | 335.5 m | 24.5 mm | 339.3 | -80.7 |
| Midpoint | 32.9, -96.8 | 23.7°C | 16.1°C | 993.0 mb | 335.5 m | 24.5 mm | 339.3 | -80.7 |
| 63% | 32.9, -96.8 | 24.5°C | 15.6°C | 986.8 mb | 310.9 m | 22.9 mm | 338.6 | -81.7 |
| 75% | 33.0, -96.7 | 24.5°C | 15.6°C | 986.8 mb | 310.9 m | 22.9 mm | 338.6 | -81.7 |
| 88% | 33.1, -96.7 | 22.2°C | 17.8°C | 991.0 mb | 245.8 m | 23.3 mm | 346.6 | -90.0 |
| 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:
85
at 09:00 UTC
Worst:
70
at 22:00 UTC