Path Calculator
Analyze microwave propagation between two points
Link Summary · 47 GHz
Distance
28 mi (45 km)
Bearing
149.1°
Terrain
BLOCKED
Propagation
72/100
GOOD
HRRR Data
9 / 9 points
Loss Budget · 47 GHz
FSPL (free-space)
158.9
dB
Gaseous (O₂+H₂O)
2.6
dB
Diffraction loss
99.7
dB
TOTAL PATH LOSS
261.2
dB
Gas rate: 0.0586 dB/km
H₂O: 0.0030 dB/km/g ·
O₂: 0.0400 dB/km
Abs humidity avg: 6.2 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)
-261.2
dB
RX Ant Gain
30.0
dBi
RX Power
-183.2
dBm
Sensitivity (CW)
-141.0
dBm
MARGIN
-43.2
dB
Path Weather Avg
Temperature
81.8°F
27.6°C
Dewpoint
40.7°F
4.8°C
T/Td Gap
41.1°F
Abs Humidity
6.2 g/m³
Pressure
990.1 mb
PWAT
13.3 mm
BL Depth
2295.0 m
Refrac Gradient
0 N/km
Propagation Factors · 47 GHz
Rain
100
T-Td Depression
96
Humidity
94
PWAT
80
Pressure
70
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 | 33.5, -96.9 | 27.3°C | 5.4°C | 992.6 mb | 2120.7 m | 11.8 mm | ||
| 13% | 33.4, -96.8 | 27.6°C | 5.2°C | 993.6 mb | 2274.0 m | 12.7 mm | ||
| 25% | 33.4, -96.8 | 26.8°C | 5.1°C | 990.1 mb | 2214.9 m | 12.3 mm | ||
| 38% | 33.3, -96.8 | 26.8°C | 5.1°C | 990.1 mb | 2214.9 m | 12.3 mm | ||
| Midpoint | 33.3, -96.7 | 28.1°C | 4.7°C | 992.1 mb | 2338.5 m | 14.1 mm | ||
| 63% | 33.2, -96.7 | 28.1°C | 4.7°C | 992.1 mb | 2338.5 m | 14.1 mm | ||
| 75% | 33.2, -96.7 | 27.8°C | 5.4°C | 994.2 mb | 2397.3 m | 14.6 mm | ||
| 88% | 33.2, -96.6 | 28.2°C | 3.9°C | 994.1 mb | 2377.9 m | 13.9 mm | ||
| Destination | 33.1, -96.6 | 28.2°C | 3.9°C | 994.1 mb | 2377.9 m | 13.9 mm |
Midpoint vertical profile
17-Hour Propagation Forecast · 47 GHz
→ Steady
Best:
81
at 06:00 UTC
Worst:
66
at 12:00 UTC