Path Calculator
Analyze microwave propagation between two points
Link Summary · 24 GHz
Distance
47 mi (76 km)
Bearing
123.1°
Terrain
BLOCKED
Propagation
62/100
MARGINAL
HRRR Data
9 / 9 points
Loss Budget · 24 GHz
FSPL (free-space)
157.7
dB
Gaseous (O₂+H₂O)
3.5
dB
Diffraction loss
90.5
dB
TOTAL PATH LOSS
251.7
dB
Gas rate: 0.0462 dB/km
H₂O: 0.0020 dB/km/g ·
O₂: 0.0200 dB/km
Abs humidity avg: 13.1 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)
-251.7
dB
RX Ant Gain
30.0
dBi
RX Power
-173.7
dBm
Sensitivity (CW)
-141.0
dBm
MARGIN
-33.7
dB
Path Weather Avg
Temperature
73.7°F
23.2°C
Dewpoint
60.4°F
15.8°C
T/Td Gap
13.3°F
Abs Humidity
13.1 g/m³
Pressure
979.1 mb
PWAT
24.1 mm
BL Depth
303.4 m
Refrac Gradient
-91.5 N/km
Propagation Factors · 24 GHz
Rain
100
Pressure
88
Refractivity
62
T-Td Depression
60
PWAT
60
Time of Day
55
Sky Cover
50
Wind
50
Season
47
Humidity
4
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, -97.3 | 21.9°C | 17.4°C | 979.1 mb | 325.4 m | 27.5 mm | 348.2 | -81.7 |
| 13% | 33.4, -97.2 | 21.9°C | 17.4°C | 979.1 mb | 325.4 m | 27.5 mm | 348.2 | -81.7 |
| 25% | 33.4, -97.1 | 23.3°C | 16.3°C | 985.6 mb | 353.9 m | 25.3 mm | 340.5 | -85.8 |
| 38% | 33.4, -97.0 | 22.5°C | 15.6°C | 985.0 mb | 272.8 m | 23.9 mm | 334.4 | -83.2 |
| Midpoint | 33.3, -97.0 | 23.2°C | 14.8°C | 987.3 mb | 296.8 m | 23.3 mm | 332.3 | -64.6 |
| 63% | 33.3, -96.9 | 24.1°C | 14.8°C | 988.5 mb | 323.9 m | 23.2 mm | 332.2 | -59.0 |
| 75% | 33.2, -96.8 | 24.1°C | 14.8°C | 985.1 mb | 282.1 m | 21.9 mm | 332.4 | -64.2 |
| 88% | 33.2, -96.7 | 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 08:00 UTC
Worst:
50
at 01:00 UTC