Path Calculator
Analyze microwave propagation between two points
Link Summary · 24 GHz
Distance
77 mi (124 km)
Bearing
112.1°
Terrain
BLOCKED
Propagation
63/100
MARGINAL
HRRR Data
9 / 9 points
Loss Budget · 24 GHz
FSPL (free-space)
161.9
dB
Gaseous (O₂+H₂O)
5.9
dB
Diffraction loss
110.9
dB
TOTAL PATH LOSS
278.7
dB
Gas rate: 0.0472 dB/km
H₂O: 0.0020 dB/km/g ·
O₂: 0.0200 dB/km
Abs humidity avg: 13.6 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)
-278.7
dB
RX Ant Gain
30.0
dBi
RX Power
-200.7
dBm
Sensitivity (CW)
-141.0
dBm
MARGIN
-60.7
dB
Path Weather Avg
Temperature
73.2°F
22.9°C
Dewpoint
61.4°F
16.3°C
T/Td Gap
11.8°F
Abs Humidity
13.6 g/m³
Pressure
972.1 mb
PWAT
25.9 mm
BL Depth
308.4 m
Refrac Gradient
-105.1 N/km
Propagation Factors · 24 GHz
Rain
100
Pressure
88
Refractivity
72
T-Td Depression
60
PWAT
60
Time of Day
55
Sky Cover
50
Wind
50
Season
47
Humidity
2
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 | 33.5, -97.9 | 22.7°C | 17.0°C | 972.9 mb | 329.3 m | 30.7 mm | 347.8 | -97.8 |
| 13% | 33.5, -97.7 | 22.0°C | 17.5°C | 972.1 mb | 323.8 m | 29.9 mm | 351.7 | -105.1 |
| 25% | 33.4, -97.5 | 21.9°C | 17.1°C | 975.1 mb | 309.1 m | 28.2 mm | 347.2 | -87.1 |
| 38% | 33.4, -97.4 | 21.8°C | 17.7°C | 976.0 mb | 279.9 m | 27.2 mm | 350.2 | -97.7 |
| Midpoint | 33.3, -97.2 | 22.1°C | 17.1°C | 982.5 mb | 320.8 m | 26.4 mm | 345.0 | -90.2 |
| 63% | 33.3, -97.1 | 23.7°C | 14.8°C | 985.8 mb | 338.3 m | 24.0 mm | 333.7 | -70.2 |
| 75% | 33.2, -96.9 | 24.1°C | 14.8°C | 988.5 mb | 323.9 m | 23.2 mm | 332.2 | -59.0 |
| 88% | 33.2, -96.8 | 23.6°C | 14.9°C | 985.3 mb | 283.7 m | 22.0 mm | 333.0 | -68.1 |
| 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 · 24 GHz
→ Steady
Best:
64
at 19:00 UTC
Worst:
52
at 22:00 UTC