Path Calculator
Analyze microwave propagation between two points
Link Summary · 24 GHz
Distance
165 mi (265 km)
Bearing
101.3°
Terrain
BLOCKED
Propagation
65/100
GOOD
HRRR Data
9 / 9 points
Loss Budget · 24 GHz
FSPL (free-space)
168.5
dB
Gaseous (O₂+H₂O)
11.3
dB
Diffraction loss
141.7
dB
TOTAL PATH LOSS
321.6
dB
Gas rate: 0.0428 dB/km
H₂O: 0.0020 dB/km/g ·
O₂: 0.0200 dB/km
Abs humidity avg: 11.4 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)
-321.6
dB
RX Ant Gain
30.0
dBi
RX Power
-243.6
dBm
Sensitivity (CW)
-141.0
dBm
MARGIN
-103.6
dB
Path Weather Avg
Temperature
75.9°F
24.4°C
Dewpoint
56.5°F
13.6°C
T/Td Gap
19.3°F
Abs Humidity
11.4 g/m³
Pressure
958.7 mb
PWAT
25.3 mm
BL Depth
298.0 m
Refrac Gradient
-111.8 N/km
Propagation Factors · 24 GHz
Rain
100
Pressure
88
T-Td Depression
80
Refractivity
72
PWAT
60
Time of Day
55
Sky Cover
50
Wind
50
Season
47
Humidity
10
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 | 33.6, -99.4 | 27.5°C | 9.0°C | 958.7 mb | 298.2 m | 25.4 mm | 305.6 | -44.6 |
| 13% | 33.6, -99.1 | 29.0°C | 6.8°C | 960.8 mb | 286.6 m | 23.2 mm | 294.0 | -42.5 |
| 25% | 33.5, -98.7 | 25.6°C | 10.0°C | 967.5 mb | 276.0 m | 23.8 mm | 295.5 | -71.7 |
| 38% | 33.4, -98.4 | 23.7°C | 12.6°C | 969.8 mb | 324.4 m | 24.9 mm | 324.0 | -62.9 |
| Midpoint | 33.4, -98.0 | 22.6°C | 15.8°C | 971.7 mb | 327.1 m | 29.2 mm | 339.6 | -81.0 |
| 63% | 33.3, -97.7 | 21.8°C | 17.1°C | 977.7 mb | 314.6 m | 28.5 mm | 344.8 | -77.9 |
| 75% | 33.2, -97.3 | 21.6°C | 18.0°C | 980.7 mb | 315.8 m | 27.0 mm | 349.5 | -111.8 |
| 88% | 33.2, -97.0 | 23.5°C | 17.3°C | 990.4 mb | 272.6 m | 23.5 mm | 333.1 | -59.5 |
| 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 17:00 UTC
Worst:
53
at 22:00 UTC