Path Calculator
Analyze microwave propagation between two points
Link Summary · 47 GHz
Distance
123 mi (198 km)
Bearing
100.7°
Terrain
BLOCKED
Propagation
73/100
GOOD
HRRR Data
9 / 9 points
Loss Budget · 47 GHz
FSPL (free-space)
171.8
dB
Gaseous (O₂+H₂O)
11.8
dB
Diffraction loss
140.0
dB
TOTAL PATH LOSS
323.7
dB
Gas rate: 0.0598 dB/km
H₂O: 0.0030 dB/km/g ·
O₂: 0.0400 dB/km
Abs humidity avg: 6.6 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)
-323.7
dB
RX Ant Gain
30.0
dBi
RX Power
-245.7
dBm
Sensitivity (CW)
-141.0
dBm
MARGIN
-105.7
dB
Path Weather Avg
Temperature
80.7°F
27.0°C
Dewpoint
42.2°F
5.7°C
T/Td Gap
38.4°F
Abs Humidity
6.6 g/m³
Pressure
975.5 mb
PWAT
12.9 mm
BL Depth
2282.1 m
Refrac Gradient
0 N/km
Propagation Factors · 47 GHz
Rain
100
T-Td Depression
96
Humidity
91
Pressure
88
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, -98.5 | 27.8°C | 4.5°C | 975.5 mb | 2275.3 m | 12.8 mm | ||
| 13% | 33.5, -98.3 | 27.3°C | 3.0°C | 977.1 mb | 2284.3 m | 10.7 mm | ||
| 25% | 33.5, -98.0 | 27.2°C | 4.3°C | 979.3 mb | 2296.7 m | 11.4 mm | ||
| 38% | 33.4, -97.8 | 26.8°C | 5.5°C | 985.4 mb | 2284.5 m | 12.4 mm | ||
| Midpoint | 33.4, -97.5 | 24.9°C | 9.3°C | 985.6 mb | 2215.8 m | 14.1 mm | ||
| 63% | 33.3, -97.2 | 26.4°C | 8.5°C | 989.9 mb | 2168.3 m | 13.6 mm | ||
| 75% | 33.3, -97.0 | 27.1°C | 7.1°C | 994.6 mb | 2296.0 m | 13.4 mm | ||
| 88% | 33.2, -96.7 | 28.1°C | 4.7°C | 992.1 mb | 2338.5 m | 14.1 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 20:00 UTC
Worst:
63
at 12:00 UTC