Path Calculator
Analyze microwave propagation between two points
Link Summary · 47 GHz
Distance
162 mi (260 km)
Bearing
82.8°
Terrain
BLOCKED
Propagation
54/100
MARGINAL
HRRR Data
9 / 9 points
Loss Budget · 47 GHz
FSPL (free-space)
174.2
dB
Gaseous (O₂+H₂O)
21.8
dB
Diffraction loss
150.3
dB
TOTAL PATH LOSS
346.3
dB
Gas rate: 0.0838 dB/km
H₂O: 0.0030 dB/km/g ·
O₂: 0.0400 dB/km
Abs humidity avg: 14.6 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)
-346.3
dB
RX Ant Gain
30.0
dBi
RX Power
-268.3
dBm
Sensitivity (CW)
-141.0
dBm
MARGIN
-128.3
dB
Path Weather Avg
Temperature
67.0°F
19.5°C
Dewpoint
63.1°F
17.3°C
T/Td Gap
3.9°F
Abs Humidity
14.6 g/m³
Pressure
970.6 mb
PWAT
38.7 mm
BL Depth
527.4 m
Refrac Gradient
-73.9 N/km
Propagation Factors · 47 GHz
Rain
100
Pressure
88
Refractivity
55
Season
55
Sky Cover
50
Wind
50
PWAT
35
Humidity
34
T-Td Depression
18
Time of Day
18
Atmospheric Profile
HRRR (3 km) Valid 2026-05-10 22:00 UTC 9 path samples| Point | Lat, Lon | Temp | Dewpt | Press | HPBL | PWAT | Ns | dN/dh |
|---|---|---|---|---|---|---|---|---|
| Source | 32.9, -99.2 | 19.1°C | 16.9°C | 970.6 mb | 763.4 m | 39.0 mm | 354.4 | -54.7 |
| 13% | 33.0, -98.9 | 18.8°C | 16.6°C | 972.8 mb | 523.0 m | 37.8 mm | 351.9 | -63.0 |
| 25% | 33.0, -98.5 | 20.1°C | 17.0°C | 978.6 mb | 539.6 m | 38.2 mm | 351.6 | -70.6 |
| 38% | 33.0, -98.2 | 19.7°C | 17.3°C | 979.6 mb | 487.6 m | 38.2 mm | 354.7 | -71.3 |
| Midpoint | 33.1, -97.8 | 19.6°C | 17.1°C | 973.4 mb | 454.5 m | 33.7 mm | 356.7 | -73.9 |
| 63% | 33.1, -97.5 | 20.0°C | 17.8°C | 983.9 mb | 529.6 m | 40.3 mm | 355.4 | -57.2 |
| 75% | 33.1, -97.1 | 19.7°C | 17.5°C | 996.1 mb | 481.8 m | 40.8 mm | 351.2 | -61.4 |
| 88% | 33.2, -96.8 | 19.0°C | 17.7°C | 992.4 mb | 471.6 m | 40.4 mm | 354.9 | -61.5 |
| Destination | 33.2, -96.5 | 19.1°C | 17.4°C | 996.3 mb | 495.6 m | 40.4 mm | 352.4 | -67.2 |
Midpoint vertical profile
17-Hour Propagation Forecast · 47 GHz
→ Steady
Best:
76
at 13:00 UTC
Worst:
41
at 01:00 UTC