Path Calculator
Analyze microwave propagation between two points
Link Summary · 47 GHz
Distance
158 mi (254 km)
Bearing
86.4°
Terrain
BLOCKED
Propagation
73/100
GOOD
HRRR Data
9 / 9 points
Loss Budget · 47 GHz
FSPL (free-space)
174.0
dB
Gaseous (O₂+H₂O)
15.2
dB
Diffraction loss
148.7
dB
TOTAL PATH LOSS
337.9
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)
-337.9
dB
RX Ant Gain
30.0
dBi
RX Power
-259.9
dBm
Sensitivity (CW)
-141.0
dBm
MARGIN
-119.9
dB
Path Weather Avg
Temperature
80.2°F
26.8°C
Dewpoint
42.3°F
5.7°C
T/Td Gap
37.8°F
Abs Humidity
6.6 g/m³
Pressure
970.7 mb
PWAT
13.1 mm
BL Depth
2295.5 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 | 33.1, -99.2 | 26.3°C | 6.6°C | 970.7 mb | 2241.7 m | 13.8 mm | ||
| 13% | 33.1, -98.8 | 26.6°C | 6.0°C | 974.0 mb | 2242.8 m | 13.2 mm | ||
| 25% | 33.1, -98.5 | 26.8°C | 6.0°C | 974.4 mb | 2292.6 m | 13.8 mm | ||
| 38% | 33.1, -98.2 | 26.7°C | 6.0°C | 973.8 mb | 2305.8 m | 14.1 mm | ||
| Midpoint | 33.1, -97.8 | 27.3°C | 3.8°C | 984.9 mb | 2338.0 m | 11.1 mm | ||
| 63% | 33.1, -97.5 | 25.2°C | 8.2°C | 983.8 mb | 2295.4 m | 13.2 mm | ||
| 75% | 33.2, -97.1 | 27.1°C | 6.3°C | 996.2 mb | 2253.7 m | 12.1 mm | ||
| 88% | 33.2, -96.8 | 27.2°C | 4.7°C | 992.1 mb | 2309.6 m | 13.7 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 21:00 UTC
Worst:
64
at 12:00 UTC