Path Calculator
Analyze microwave propagation between two points
Link Summary · 24 GHz
Distance
163 mi (263 km)
Bearing
79.1°
Terrain
BLOCKED
Propagation
64/100
MARGINAL
HRRR Data
9 / 9 points
Loss Budget · 24 GHz
FSPL (free-space)
168.4
dB
Gaseous (O₂+H₂O)
11.6
dB
Diffraction loss
140.4
dB
TOTAL PATH LOSS
320.5
dB
Gas rate: 0.0443 dB/km
H₂O: 0.0020 dB/km/g ·
O₂: 0.0200 dB/km
Abs humidity avg: 12.1 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)
-320.5
dB
RX Ant Gain
30.0
dBi
RX Power
-242.5
dBm
Sensitivity (CW)
-141.0
dBm
MARGIN
-102.5
dB
Path Weather Avg
Temperature
74.5°F
23.6°C
Dewpoint
58.2°F
14.6°C
T/Td Gap
16.3°F
Abs Humidity
12.1 g/m³
Pressure
950.7 mb
PWAT
27.3 mm
BL Depth
249.2 m
Refrac Gradient
-108.6 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
7
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 | 32.7, -99.4 | 23.9°C | 14.5°C | 950.7 mb | 182.9 m | 31.0 mm | 328.8 | -108.6 |
| 13% | 32.8, -99.0 | 24.0°C | 12.5°C | 967.0 mb | 147.9 m | 31.2 mm | 321.1 | -59.0 |
| 25% | 32.8, -98.7 | 24.5°C | 11.9°C | 965.2 mb | 209.1 m | 29.8 mm | 319.5 | -57.1 |
| 38% | 32.9, -98.3 | 24.6°C | 12.5°C | 970.8 mb | 263.2 m | 28.9 mm | 323.8 | -67.9 |
| Midpoint | 32.9, -98.0 | 23.5°C | 14.3°C | 973.3 mb | 320.8 m | 27.4 mm | 332.8 | -73.5 |
| 63% | 33.0, -97.7 | 22.9°C | 16.5°C | 978.6 mb | 326.9 m | 27.8 mm | 342.7 | -82.5 |
| 75% | 33.0, -97.3 | 21.7°C | 15.7°C | 985.8 mb | 253.1 m | 24.4 mm | 333.2 | -65.0 |
| 88% | 33.1, -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:
65
at 17:00 UTC
Worst:
54
at 23:00 UTC