Path Calculator
Analyze microwave propagation between two points
Link Summary · 47 GHz
Distance
145 mi (233 km)
Bearing
99.7°
Terrain
BLOCKED
Propagation
73/100
GOOD
HRRR Data
9 / 9 points
Loss Budget · 47 GHz
FSPL (free-space)
173.2
dB
Gaseous (O₂+H₂O)
13.9
dB
Diffraction loss
145.2
dB
TOTAL PATH LOSS
332.4
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)
-332.4
dB
RX Ant Gain
30.0
dBi
RX Power
-254.4
dBm
Sensitivity (CW)
-141.0
dBm
MARGIN
-114.4
dB
Path Weather Avg
Temperature
80.9°F
27.1°C
Dewpoint
42.2°F
5.7°C
T/Td Gap
38.6°F
Abs Humidity
6.6 g/m³
Pressure
970.8 mb
PWAT
13.2 mm
BL Depth
2288.4 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, -99.1 | 26.9°C | 4.2°C | 970.8 mb | 2283.3 m | 11.9 mm | ||
| 13% | 33.5, -98.8 | 27.1°C | 5.6°C | 977.4 mb | 2299.4 m | 13.1 mm | ||
| 25% | 33.4, -98.5 | 27.1°C | 4.9°C | 975.7 mb | 2264.0 m | 12.1 mm | ||
| 38% | 33.4, -98.2 | 27.1°C | 3.6°C | 980.2 mb | 2244.0 m | 10.3 mm | ||
| Midpoint | 33.3, -97.8 | 28.3°C | 5.6°C | 985.9 mb | 2402.8 m | 15.2 mm | ||
| 63% | 33.3, -97.5 | 26.0°C | 7.5°C | 985.4 mb | 2259.3 m | 13.2 mm | ||
| 75% | 33.2, -97.2 | 26.2°C | 9.6°C | 992.0 mb | 2131.5 m | 14.8 mm | ||
| 88% | 33.2, -96.9 | 27.3°C | 6.2°C | 995.3 mb | 2332.9 m | 14.2 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 20:00 UTC
Worst:
65
at 11:00 UTC