Path Calculator
Analyze microwave propagation between two points
Link Summary · 24 GHz
Distance
49 mi (79 km)
Bearing
56.4°
Terrain
BLOCKED
Propagation
53/100
MARGINAL
HRRR Data
9 / 9 points
Loss Budget · 24 GHz
FSPL (free-space)
158.0
dB
Gaseous (O₂+H₂O)
3.9
dB
Diffraction loss
96.5
dB
TOTAL PATH LOSS
258.4
dB
Gas rate: 0.0497 dB/km
H₂O: 0.0020 dB/km/g ·
O₂: 0.0200 dB/km
Abs humidity avg: 14.8 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)
-258.4
dB
RX Ant Gain
30.0
dBi
RX Power
-180.4
dBm
Sensitivity (CW)
-141.0
dBm
MARGIN
-40.4
dB
Path Weather Avg
Temperature
71.0°F
21.7°C
Dewpoint
63.7°F
17.6°C
T/Td Gap
7.4°F
Abs Humidity
14.8 g/m³
Pressure
992.5 mb
PWAT
39.4 mm
BL Depth
575.9 m
Refrac Gradient
-79.0 N/km
Propagation Factors · 24 GHz
Rain
100
Pressure
70
Refractivity
62
Sky Cover
50
Wind
50
Season
47
T-Td Depression
38
PWAT
35
Time of Day
18
Humidity
0
Atmospheric Profile
HRRR (3 km) Valid 2026-05-10 21:00 UTC 9 path samples| Point | Lat, Lon | Temp | Dewpt | Press | HPBL | PWAT | Ns | dN/dh |
|---|---|---|---|---|---|---|---|---|
| Source | 32.7, -97.3 | 23.1°C | 17.5°C | 995.6 mb | 722.7 m | 39.0 mm | 347.3 | -56.2 |
| 13% | 32.8, -97.2 | 23.6°C | 16.6°C | 995.3 mb | 667.2 m | 39.7 mm | 344.2 | -63.4 |
| 25% | 32.8, -97.1 | 22.8°C | 17.9°C | 995.4 mb | 577.1 m | 40.0 mm | 351.9 | -79.0 |
| 38% | 32.9, -97.1 | 23.3°C | 17.6°C | 997.2 mb | 606.7 m | 39.1 mm | 350.0 | -77.9 |
| Midpoint | 32.9, -97.0 | 23.3°C | 17.6°C | 997.2 mb | 606.7 m | 39.1 mm | 350.0 | -77.9 |
| 63% | 33.0, -96.9 | 20.7°C | 18.0°C | 995.4 mb | 597.5 m | 39.5 mm | 352.7 | -63.4 |
| 75% | 33.0, -96.8 | 19.7°C | 17.5°C | 993.4 mb | 482.7 m | 37.7 mm | 353.7 | -63.8 |
| 88% | 33.1, -96.7 | 19.5°C | 17.9°C | 992.5 mb | 466.5 m | 40.1 mm | 354.0 | -63.7 |
| Destination | 33.1, -96.6 | 19.4°C | 17.8°C | 995.0 mb | 456.2 m | 40.3 mm | 354.2 | -62.2 |
Midpoint vertical profile
17-Hour Propagation Forecast · 24 GHz
→ Steady
Best:
60
at 12:00 UTC
Worst:
43
at 02:00 UTC