Path Calculator
Analyze microwave propagation between two points
Link Summary · 47 GHz
Distance
25 mi (40 km)
Bearing
138.0°
Terrain
BLOCKED
Propagation
72/100
GOOD
HRRR Data
9 / 9 points
Loss Budget · 47 GHz
FSPL (free-space)
158.0
dB
Gaseous (O₂+H₂O)
2.4
dB
Diffraction loss
89.6
dB
TOTAL PATH LOSS
250.0
dB
Gas rate: 0.0602 dB/km
H₂O: 0.0030 dB/km/g ·
O₂: 0.0400 dB/km
Abs humidity avg: 6.8 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)
-250.0
dB
RX Ant Gain
30.0
dBi
RX Power
-172.0
dBm
Sensitivity (CW)
-141.0
dBm
MARGIN
-32.0
dB
Path Weather Avg
Temperature
82.1°F
27.8°C
Dewpoint
42.9°F
6.0°C
T/Td Gap
39.3°F
Abs Humidity
6.8 g/m³
Pressure
991.9 mb
PWAT
15.7 mm
BL Depth
2357.9 m
Refrac Gradient
0 N/km
Propagation Factors · 47 GHz
Rain
100
T-Td Depression
96
Humidity
90
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 | 33.4, -96.9 | 27.6°C | 5.9°C | 993.6 mb | 2289.9 m | 14.3 mm | ||
| 13% | 33.4, -96.9 | 27.6°C | 5.9°C | 993.6 mb | 2289.9 m | 14.3 mm | ||
| 25% | 33.3, -96.8 | 27.6°C | 5.9°C | 993.6 mb | 2289.9 m | 14.3 mm | ||
| 38% | 33.3, -96.8 | 28.1°C | 5.7°C | 991.9 mb | 2354.5 m | 15.8 mm | ||
| Midpoint | 33.3, -96.8 | 28.1°C | 5.7°C | 991.9 mb | 2354.5 m | 15.8 mm | ||
| 63% | 33.2, -96.7 | 28.1°C | 5.7°C | 991.9 mb | 2354.5 m | 15.8 mm | ||
| 75% | 33.2, -96.7 | 27.0°C | 6.8°C | 992.1 mb | 2289.3 m | 16.2 mm | ||
| 88% | 33.2, -96.7 | 28.4°C | 6.3°C | 993.9 mb | 2499.5 m | 17.5 mm | ||
| Destination | 33.1, -96.6 | 28.4°C | 6.3°C | 993.9 mb | 2499.5 m | 17.5 mm |
Midpoint vertical profile
18-Hour Propagation Forecast · 47 GHz
→ Steady
Best:
81
at 01:00 UTC
Worst:
64
at 13:00 UTC