Path Calculator
Analyze microwave propagation between two points
Link Summary · 47 GHz
Distance
109 mi (175 km)
Bearing
63.2°
Terrain
BLOCKED
Propagation
73/100
GOOD
HRRR Data
9 / 9 points
Loss Budget · 47 GHz
FSPL (free-space)
170.8
dB
Gaseous (O₂+H₂O)
10.7
dB
Diffraction loss
130.4
dB
TOTAL PATH LOSS
311.8
dB
Gas rate: 0.0608 dB/km
H₂O: 0.0030 dB/km/g ·
O₂: 0.0400 dB/km
Abs humidity avg: 6.9 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)
-311.8
dB
RX Ant Gain
30.0
dBi
RX Power
-233.8
dBm
Sensitivity (CW)
-141.0
dBm
MARGIN
-93.8
dB
Path Weather Avg
Temperature
80.9°F
27.1°C
Dewpoint
43.4°F
6.3°C
T/Td Gap
37.4°F
Abs Humidity
6.9 g/m³
Pressure
979.9 mb
PWAT
14.8 mm
BL Depth
2334.4 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 | 32.5, -98.1 | 26.8°C | 6.6°C | 979.9 mb | 2251.0 m | 14.5 mm | ||
| 13% | 32.6, -97.9 | 27.3°C | 5.3°C | 987.9 mb | 2279.5 m | 13.1 mm | ||
| 25% | 32.7, -97.7 | 27.2°C | 5.5°C | 983.0 mb | 2326.3 m | 14.1 mm | ||
| 38% | 32.8, -97.5 | 26.1°C | 7.9°C | 988.8 mb | 2409.9 m | 16.0 mm | ||
| Midpoint | 32.8, -97.3 | 26.3°C | 6.5°C | 993.8 mb | 2274.8 m | 12.6 mm | ||
| 63% | 32.9, -97.1 | 27.4°C | 6.7°C | 995.6 mb | 2347.8 m | 15.1 mm | ||
| 75% | 33.0, -96.9 | 27.1°C | 7.5°C | 995.0 mb | 2330.0 m | 16.8 mm | ||
| 88% | 33.1, -96.7 | 28.4°C | 6.3°C | 993.9 mb | 2499.5 m | 17.5 mm | ||
| Destination | 33.2, -96.5 | 27.6°C | 4.8°C | 995.4 mb | 2290.7 m | 13.7 mm |
Midpoint vertical profile
18-Hour Propagation Forecast · 47 GHz
→ Steady
Best:
79
at 20:00 UTC
Worst:
62
at 12:00 UTC