Path Calculator
Analyze microwave propagation between two points
Link Summary · 47 GHz
Distance
121 mi (195 km)
Bearing
90.6°
Terrain
BLOCKED
Propagation
73/100
GOOD
HRRR Data
9 / 9 points
Loss Budget · 47 GHz
FSPL (free-space)
171.7
dB
Gaseous (O₂+H₂O)
11.8
dB
Diffraction loss
138.7
dB
TOTAL PATH LOSS
322.2
dB
Gas rate: 0.0605 dB/km
H₂O: 0.0030 dB/km/g ·
O₂: 0.0400 dB/km
Abs humidity avg: 6.8 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)
-322.2
dB
RX Ant Gain
30.0
dBi
RX Power
-244.2
dBm
Sensitivity (CW)
-141.0
dBm
MARGIN
-104.2
dB
Path Weather Avg
Temperature
80.5°F
26.9°C
Dewpoint
43.1°F
6.2°C
T/Td Gap
37.3°F
Abs Humidity
6.8 g/m³
Pressure
970.9 mb
PWAT
13.4 mm
BL Depth
2279.5 m
Refrac Gradient
0 N/km
Propagation Factors · 47 GHz
Rain
100
T-Td Depression
96
Humidity
89
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 | 33.2, -98.5 | 26.3°C | 4.7°C | 970.9 mb | 2223.1 m | 11.9 mm | ||
| 13% | 33.2, -98.3 | 26.9°C | 5.2°C | 978.1 mb | 2228.6 m | 12.2 mm | ||
| 25% | 33.2, -98.0 | 27.0°C | 6.0°C | 982.6 mb | 2292.2 m | 13.4 mm | ||
| 38% | 33.2, -97.8 | 26.9°C | 6.7°C | 986.3 mb | 2366.4 m | 14.1 mm | ||
| Midpoint | 33.2, -97.5 | 26.0°C | 7.5°C | 985.4 mb | 2259.3 m | 13.2 mm | ||
| 63% | 33.2, -97.2 | 26.2°C | 9.6°C | 992.0 mb | 2131.5 m | 14.8 mm | ||
| 75% | 33.2, -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:
80
at 20:00 UTC
Worst:
64
at 12:00 UTC