Path Calculator
Analyze microwave propagation between two points
Link Summary · 24 GHz
Distance
148 mi (239 km)
Bearing
88.1°
Terrain
BLOCKED
Propagation
63/100
MARGINAL
HRRR Data
9 / 9 points
Loss Budget · 24 GHz
FSPL (free-space)
167.6
dB
Gaseous (O₂+H₂O)
10.6
dB
Diffraction loss
137.2
dB
TOTAL PATH LOSS
315.4
dB
Gas rate: 0.0445 dB/km
H₂O: 0.0020 dB/km/g ·
O₂: 0.0200 dB/km
Abs humidity avg: 12.2 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)
-315.4
dB
RX Ant Gain
30.0
dBi
RX Power
-237.4
dBm
Sensitivity (CW)
-141.0
dBm
MARGIN
-97.4
dB
Path Weather Avg
Temperature
74.6°F
23.7°C
Dewpoint
58.5°F
14.7°C
T/Td Gap
16.1°F
Abs Humidity
12.2 g/m³
Pressure
962.5 mb
PWAT
26.8 mm
BL Depth
294.4 m
Refrac Gradient
-91.5 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
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 | 33.1, -99.2 | 25.4°C | 13.8°C | 962.5 mb | 295.3 m | 28.9 mm | 327.4 | -82.5 |
| 13% | 33.1, -98.9 | 25.4°C | 13.3°C | 966.3 mb | 316.3 m | 30.2 mm | 326.0 | -56.4 |
| 25% | 33.1, -98.5 | 24.0°C | 12.5°C | 966.4 mb | 316.8 m | 27.2 mm | 322.9 | -70.1 |
| 38% | 33.1, -98.2 | 22.7°C | 13.3°C | 964.6 mb | 320.4 m | 27.9 mm | 330.2 | -67.7 |
| Midpoint | 33.1, -97.9 | 23.7°C | 15.0°C | 977.3 mb | 259.3 m | 28.9 mm | 335.0 | -82.9 |
| 63% | 33.1, -97.6 | 22.8°C | 16.8°C | 982.3 mb | 336.4 m | 28.8 mm | 343.3 | -79.5 |
| 75% | 33.1, -97.3 | 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:
63
at 10:00 UTC
Worst:
53
at 23:00 UTC