Path Calculator
Analyze microwave propagation between two points
Link Summary · 47 GHz
Distance
77 mi (124 km)
Bearing
112.1°
Terrain
BLOCKED
Propagation
73/100
GOOD
HRRR Data
9 / 9 points
Loss Budget · 47 GHz
FSPL (free-space)
167.8
dB
Gaseous (O₂+H₂O)
7.6
dB
Diffraction loss
120.2
dB
TOTAL PATH LOSS
295.6
dB
Gas rate: 0.0615 dB/km
H₂O: 0.0030 dB/km/g ·
O₂: 0.0400 dB/km
Abs humidity avg: 7.2 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)
-295.6
dB
RX Ant Gain
30.0
dBi
RX Power
-217.6
dBm
Sensitivity (CW)
-141.0
dBm
MARGIN
-77.6
dB
Path Weather Avg
Temperature
79.9°F
26.6°C
Dewpoint
44.4°F
6.9°C
T/Td Gap
35.6°F
Abs Humidity
7.2 g/m³
Pressure
979.3 mb
PWAT
14.5 mm
BL Depth
2247.5 m
Refrac Gradient
0 N/km
Propagation Factors · 47 GHz
Rain
100
T-Td Depression
96
Pressure
88
Humidity
87
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 | 33.5, -97.9 | 27.1°C | 5.0°C | 979.9 mb | 2290.1 m | 13.0 mm | ||
| 13% | 33.5, -97.7 | 26.3°C | 5.9°C | 979.3 mb | 2248.8 m | 13.3 mm | ||
| 25% | 33.4, -97.5 | 25.4°C | 7.3°C | 982.6 mb | 2056.9 m | 12.5 mm | ||
| 38% | 33.4, -97.4 | 24.7°C | 9.8°C | 983.6 mb | 2071.5 m | 15.0 mm | ||
| Midpoint | 33.3, -97.2 | 26.4°C | 8.3°C | 989.9 mb | 2184.3 m | 14.2 mm | ||
| 63% | 33.3, -97.1 | 26.7°C | 6.5°C | 993.2 mb | 2227.0 m | 13.2 mm | ||
| 75% | 33.2, -96.9 | 27.7°C | 6.0°C | 995.5 mb | 2360.1 m | 15.5 mm | ||
| 88% | 33.2, -96.8 | 27.0°C | 6.8°C | 992.1 mb | 2289.3 m | 16.2 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:
79
at 20:00 UTC
Worst:
63
at 12:00 UTC