Path Calculator
Analyze microwave propagation between two points
Link Summary · 24 GHz
Distance
138 mi (222 km)
Bearing
94.0°
Terrain
BLOCKED
Propagation
63/100
MARGINAL
HRRR Data
9 / 9 points
Loss Budget · 24 GHz
FSPL (free-space)
167.0
dB
Gaseous (O₂+H₂O)
10.0
dB
Diffraction loss
134.8
dB
TOTAL PATH LOSS
311.8
dB
Gas rate: 0.0449 dB/km
H₂O: 0.0020 dB/km/g ·
O₂: 0.0200 dB/km
Abs humidity avg: 12.4 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)
-311.8
dB
RX Ant Gain
30.0
dBi
RX Power
-233.8
dBm
Sensitivity (CW)
-141.0
dBm
MARGIN
-93.8
dB
Path Weather Avg
Temperature
74.1°F
23.4°C
Dewpoint
59.0°F
15.0°C
T/Td Gap
15.1°F
Abs Humidity
12.4 g/m³
Pressure
964.3 mb
PWAT
26.2 mm
BL Depth
290.5 m
Refrac Gradient
-92.6 N/km
Propagation Factors · 24 GHz
Rain
100
Pressure
88
T-Td Depression
80
Refractivity
62
PWAT
60
Time of Day
55
Sky Cover
50
Wind
50
Season
47
Humidity
6
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 | 33.3, -99.0 | 25.0°C | 13.6°C | 966.3 mb | 301.6 m | 26.9 mm | 324.9 | -80.9 |
| 13% | 33.3, -98.7 | 25.3°C | 13.0°C | 965.5 mb | 310.5 m | 27.0 mm | 324.1 | -92.6 |
| 25% | 33.2, -98.4 | 23.7°C | 12.5°C | 964.3 mb | 326.6 m | 25.8 mm | 326.3 | -66.3 |
| 38% | 33.2, -98.1 | 22.8°C | 14.0°C | 973.5 mb | 259.2 m | 29.0 mm | 330.6 | -70.3 |
| Midpoint | 33.2, -97.8 | 22.4°C | 17.0°C | 979.0 mb | 342.1 m | 30.2 mm | 340.5 | -73.2 |
| 63% | 33.2, -97.5 | 22.2°C | 16.9°C | 976.3 mb | 269.4 m | 27.0 mm | 344.1 | -89.7 |
| 75% | 33.2, -97.2 | 21.3°C | 16.7°C | 983.4 mb | 259.1 m | 24.9 mm | 338.8 | -85.7 |
| 88% | 33.1, -96.9 | 23.5°C | 15.0°C | 988.3 mb | 279.1 m | 22.7 mm | 332.9 | -69.0 |
| 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 · 24 GHz
→ Steady
Best:
65
at 18:00 UTC
Worst:
53
at 23:00 UTC