Path Calculator
Analyze microwave propagation between two points
Link Summary · 47 GHz
Distance
122 mi (196 km)
Bearing
97.5°
Terrain
BLOCKED
Propagation
73/100
GOOD
HRRR Data
9 / 9 points
Loss Budget · 47 GHz
FSPL (free-space)
171.7
dB
Gaseous (O₂+H₂O)
11.9
dB
Diffraction loss
138.8
dB
TOTAL PATH LOSS
322.4
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)
-322.4
dB
RX Ant Gain
30.0
dBi
RX Power
-244.4
dBm
Sensitivity (CW)
-141.0
dBm
MARGIN
-104.4
dB
Path Weather Avg
Temperature
80.6°F
27.0°C
Dewpoint
43.0°F
6.1°C
T/Td Gap
37.6°F
Abs Humidity
6.8 g/m³
Pressure
973.4 mb
PWAT
13.5 mm
BL Depth
2300.7 m
Refrac Gradient
0 N/km
Propagation Factors · 47 GHz
Rain
100
T-Td Depression
96
Humidity
90
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 | 33.4, -98.7 | 26.9°C | 6.4°C | 973.4 mb | 2273.5 m | 14.6 mm | ||
| 13% | 33.3, -98.4 | 27.1°C | 4.9°C | 975.7 mb | 2264.0 m | 12.1 mm | ||
| 25% | 33.3, -98.2 | 26.9°C | 5.5°C | 981.1 mb | 2268.8 m | 12.6 mm | ||
| 38% | 33.3, -97.9 | 28.3°C | 5.6°C | 985.9 mb | 2402.8 m | 15.2 mm | ||
| Midpoint | 33.2, -97.7 | 26.1°C | 6.5°C | 985.1 mb | 2315.1 m | 12.9 mm | ||
| 63% | 33.2, -97.4 | 25.0°C | 9.7°C | 988.2 mb | 2217.7 m | 13.8 mm | ||
| 75% | 33.2, -97.1 | 27.1°C | 6.3°C | 996.2 mb | 2253.7 m | 12.1 mm | ||
| 88% | 33.2, -96.9 | 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:
80
at 21:00 UTC
Worst:
64
at 12:00 UTC