Path Calculator
Analyze microwave propagation between two points
Link Summary · 47 GHz
Distance
159 mi (256 km)
Bearing
92.8°
Terrain
BLOCKED
Propagation
73/100
GOOD
HRRR Data
9 / 9 points
Loss Budget · 47 GHz
FSPL (free-space)
174.1
dB
Gaseous (O₂+H₂O)
15.3
dB
Diffraction loss
148.1
dB
TOTAL PATH LOSS
337.5
dB
Gas rate: 0.0599 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)
-337.5
dB
RX Ant Gain
30.0
dBi
RX Power
-259.5
dBm
Sensitivity (CW)
-141.0
dBm
MARGIN
-119.5
dB
Path Weather Avg
Temperature
80.7°F
27.0°C
Dewpoint
42.3°F
5.7°C
T/Td Gap
38.4°F
Abs Humidity
6.6 g/m³
Pressure
965.2 mb
PWAT
13.3 mm
BL Depth
2295.0 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 | 33.3, -99.2 | 26.2°C | 5.2°C | 965.2 mb | 2258.0 m | 12.6 mm | ||
| 13% | 33.3, -98.9 | 26.9°C | 6.1°C | 973.1 mb | 2295.7 m | 13.9 mm | ||
| 25% | 33.3, -98.5 | 26.3°C | 4.7°C | 970.9 mb | 2223.1 m | 11.9 mm | ||
| 38% | 33.3, -98.2 | 26.9°C | 5.5°C | 981.1 mb | 2268.8 m | 12.6 mm | ||
| Midpoint | 33.3, -97.8 | 28.3°C | 5.6°C | 985.9 mb | 2402.8 m | 15.2 mm | ||
| 63% | 33.2, -97.5 | 26.0°C | 7.5°C | 985.4 mb | 2259.3 m | 13.2 mm | ||
| 75% | 33.2, -97.1 | 26.7°C | 7.8°C | 993.3 mb | 2228.5 m | 13.2 mm | ||
| 88% | 33.2, -96.8 | 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:
81
at 20:00 UTC
Worst:
65
at 11:00 UTC