Path Calculator
Analyze microwave propagation between two points
Link Summary · 47 GHz
Distance
156 mi (252 km)
Bearing
229.0°
Terrain
BLOCKED
Propagation
73/100
GOOD
HRRR Data
9 / 9 points
Loss Budget · 47 GHz
FSPL (free-space)
173.9
dB
Gaseous (O₂+H₂O)
15.8
dB
Diffraction loss
138.6
dB
TOTAL PATH LOSS
328.3
dB
Gas rate: 0.0628 dB/km
H₂O: 0.0030 dB/km/g ·
O₂: 0.0400 dB/km
Abs humidity avg: 7.6 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)
-328.3
dB
RX Ant Gain
30.0
dBi
RX Power
-250.3
dBm
Sensitivity (CW)
-141.0
dBm
MARGIN
-110.3
dB
Path Weather Avg
Temperature
80.7°F
27.0°C
Dewpoint
45.8°F
7.7°C
T/Td Gap
34.8°F
Abs Humidity
7.6 g/m³
Pressure
979.5 mb
PWAT
15.3 mm
BL Depth
2188.9 m
Refrac Gradient
0 N/km
Propagation Factors · 47 GHz
Rain
100
T-Td Depression
96
Pressure
88
Humidity
84
PWAT
80
Season
55
Refractivity
50
Sky Cover
50
Wind
50
Time of Day
18
Atmospheric Profile
HRRR (3 km) Valid 2026-05-03 20:00 UTC 9 path samples| Point | Lat, Lon | Temp | Dewpt | Press | HPBL | PWAT | Ns | dN/dh |
|---|---|---|---|---|---|---|---|---|
| Source | 34.7, -94.4 | 25.2°C | 10.3°C | 979.5 mb | 1689.5 m | 15.6 mm | ||
| 13% | 34.5, -94.7 | 24.7°C | 11.7°C | 985.4 mb | 1702.5 m | 15.7 mm | ||
| 25% | 34.3, -94.9 | 25.2°C | 11.9°C | 988.4 mb | 1967.7 m | 16.4 mm | ||
| 38% | 34.1, -95.2 | 27.7°C | 8.0°C | 997.6 mb | 2338.8 m | 15.1 mm | ||
| Midpoint | 33.9, -95.4 | 29.0°C | 5.3°C | 999.2 mb | 2450.1 m | 15.8 mm | ||
| 63% | 33.8, -95.7 | 28.0°C | 6.0°C | 996.7 mb | 2353.0 m | 14.9 mm | ||
| 75% | 33.6, -95.9 | 27.2°C | 7.0°C | 994.9 mb | 2326.5 m | 14.9 mm | ||
| 88% | 33.4, -96.2 | 28.4°C | 4.9°C | 991.2 mb | 2492.0 m | 16.1 mm | ||
| Destination | 33.2, -96.5 | 27.8°C | 4.1°C | 995.4 mb | 2379.9 m | 13.3 mm |
Midpoint vertical profile
17-Hour Propagation Forecast · 47 GHz
→ Steady
Best:
79
at 21:00 UTC
Worst:
70
at 07:00 UTC