Path Calculator
Analyze microwave propagation between two points
Link Summary · 10 GHz
Distance
30 mi (49 km)
Bearing
128.7°
Terrain
BLOCKED
Propagation
69/100
GOOD
HRRR Data
9 / 9 points
Loss Budget · 10 GHz
FSPL (free-space)
146.2
dB
Gaseous (O₂+H₂O)
0.3
dB
Diffraction loss
75.0
dB
TOTAL PATH LOSS
221.6
dB
Gas rate: 0.0070 dB/km
H₂O: 0.0000 dB/km/g ·
O₂: 0.0070 dB/km
Abs humidity avg: 15.1 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)
-221.6
dB
RX Ant Gain
30.0
dBi
RX Power
-143.6
dBm
Sensitivity (CW)
-141.0
dBm
MARGIN
-3.6
dB
Path Weather Avg
Temperature
69.0°F
20.6°C
Dewpoint
64.1°F
17.9°C
T/Td Gap
4.8°F
Abs Humidity
15.1 g/m³
Pressure
991.7 mb
PWAT
41.2 mm
BL Depth
689.0 m
Refrac Gradient
-72.5 N/km
Propagation Factors · 10 GHz
Rain
100
Humidity
95
T-Td Depression
75
Pressure
70
Season
68
Refractivity
55
PWAT
50
Sky Cover
50
Wind
50
Time of Day
18
Atmospheric Profile
HRRR (3 km) Valid 2026-05-10 21:00 UTC 9 path samples| Point | Lat, Lon | Temp | Dewpt | Press | HPBL | PWAT | Ns | dN/dh |
|---|---|---|---|---|---|---|---|---|
| Source | 33.5, -96.9 | 21.4°C | 16.7°C | 994.5 mb | 758.5 m | 37.7 mm | 345.7 | -72.5 |
| 13% | 33.4, -96.8 | 21.1°C | 18.1°C | 991.7 mb | 758.9 m | 42.3 mm | 354.8 | -51.7 |
| 25% | 33.4, -96.8 | 21.1°C | 18.1°C | 991.7 mb | 758.9 m | 42.3 mm | 354.8 | -51.7 |
| 38% | 33.4, -96.7 | 21.1°C | 18.1°C | 991.7 mb | 758.9 m | 42.3 mm | 354.8 | -51.7 |
| Midpoint | 33.3, -96.7 | 20.0°C | 17.7°C | 994.3 mb | 583.6 m | 39.8 mm | 353.6 | -57.8 |
| 63% | 33.3, -96.6 | 20.0°C | 18.2°C | 995.4 mb | 781.6 m | 42.2 mm | 356.1 | -53.2 |
| 75% | 33.3, -96.6 | 20.1°C | 17.9°C | 997.2 mb | 600.2 m | 41.5 mm | 353.7 | -58.9 |
| 88% | 33.2, -96.5 | 20.1°C | 17.9°C | 997.2 mb | 600.2 m | 41.5 mm | 353.7 | -58.9 |
| Destination | 33.2, -96.5 | 20.1°C | 17.9°C | 997.2 mb | 600.2 m | 41.5 mm | 353.7 | -58.9 |
Midpoint vertical profile
17-Hour Propagation Forecast · 10 GHz
→ Steady
Best:
75
at 10:00 UTC
Worst:
60
at 02:00 UTC