Path Calculator
Analyze microwave propagation between two points
Link Summary · 47 GHz
Distance
151 mi (243 km)
Bearing
44.2°
Terrain
BLOCKED
Propagation
74/100
GOOD
HRRR Data
9 / 9 points
Loss Budget · 47 GHz
FSPL (free-space)
173.6
dB
Gaseous (O₂+H₂O)
14.3
dB
Diffraction loss
144.2
dB
TOTAL PATH LOSS
332.2
dB
Gas rate: 0.0590 dB/km
H₂O: 0.0030 dB/km/g ·
O₂: 0.0400 dB/km
Abs humidity avg: 6.3 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)
-332.2
dB
RX Ant Gain
30.0
dBi
RX Power
-254.2
dBm
Sensitivity (CW)
-141.0
dBm
MARGIN
-114.2
dB
Path Weather Avg
Temperature
79.4°F
26.3°C
Dewpoint
41.1°F
5.0°C
T/Td Gap
38.3°F
Abs Humidity
6.3 g/m³
Pressure
964.0 mb
PWAT
12.8 mm
BL Depth
2155.6 m
Refrac Gradient
0 N/km
Propagation Factors · 47 GHz
Rain
100
T-Td Depression
96
Humidity
93
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 | 31.6, -98.4 | 22.4°C | 6.9°C | 964.0 mb | 1688.8 m | 11.7 mm | ||
| 13% | 31.8, -98.2 | 24.6°C | 6.6°C | 974.4 mb | 1929.8 m | 13.4 mm | ||
| 25% | 32.0, -98.0 | 25.4°C | 5.8°C | 978.3 mb | 2042.3 m | 12.6 mm | ||
| 38% | 32.1, -97.8 | 25.6°C | 6.0°C | 981.8 mb | 2038.5 m | 12.3 mm | ||
| Midpoint | 32.3, -97.5 | 26.7°C | 5.4°C | 986.5 mb | 2296.8 m | 12.9 mm | ||
| 63% | 32.5, -97.3 | 26.9°C | 4.9°C | 990.3 mb | 2316.4 m | 12.4 mm | ||
| 75% | 32.7, -97.1 | 28.5°C | 2.4°C | 996.2 mb | 2374.9 m | 11.6 mm | ||
| 88% | 32.9, -96.8 | 28.4°C | 3.6°C | 999.3 mb | 2334.7 m | 14.1 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:
80
at 20:00 UTC
Worst:
64
at 11:00 UTC