Path Calculator
Analyze microwave propagation between two points
Link Summary · 47 GHz
Distance
20 mi (33 km)
Bearing
4.1°
Terrain
BLOCKED
Propagation
49/100
POOR
HRRR Data
9 / 9 points
Loss Budget · 47 GHz
FSPL (free-space)
156.2
dB
Gaseous (O₂+H₂O)
2.8
dB
Diffraction loss
37.5
dB
TOTAL PATH LOSS
196.5
dB
Gas rate: 0.0853 dB/km
H₂O: 0.0030 dB/km/g ·
O₂: 0.0400 dB/km
Abs humidity avg: 15.1 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)
-196.5
dB
RX Ant Gain
30.0
dBi
RX Power
-118.5
dBm
Sensitivity (CW)
-141.0
dBm
MARGIN
21.5
dB
Path Weather Avg
Temperature
66.8°F
19.3°C
Dewpoint
64.0°F
17.8°C
T/Td Gap
2.7°F
Abs Humidity
15.1 g/m³
Pressure
997.2 mb
PWAT
40.4 mm
BL Depth
450.6 m
Refrac Gradient
-67.9 N/km
Propagation Factors · 47 GHz
Rain
100
Pressure
70
Refractivity
55
Season
55
Sky Cover
50
Wind
50
Humidity
30
T-Td Depression
18
Time of Day
18
PWAT
15
Atmospheric Profile
HRRR (3 km) Valid 2026-05-10 21:00 UTC 9 path samples| Point | Lat, Lon | Temp | Dewpt | Press | HPBL | PWAT | Ns | dN/dh |
|---|---|---|---|---|---|---|---|---|
| Source | 32.9, -96.5 | 20.1°C | 17.9°C | 1001.5 mb | 429.9 m | 39.2 mm | 352.1 | -62.8 |
| 13% | 32.9, -96.5 | 20.1°C | 17.9°C | 1001.5 mb | 429.9 m | 39.2 mm | 352.1 | -62.8 |
| 25% | 33.0, -96.5 | 18.9°C | 17.7°C | 999.8 mb | 433.5 m | 40.5 mm | 353.6 | -67.9 |
| 38% | 33.0, -96.5 | 18.9°C | 17.7°C | 999.8 mb | 433.5 m | 40.5 mm | 353.6 | -67.9 |
| Midpoint | 33.0, -96.5 | 18.9°C | 17.7°C | 999.8 mb | 433.5 m | 40.5 mm | 353.6 | -67.9 |
| 63% | 33.1, -96.5 | 18.9°C | 17.8°C | 998.4 mb | 431.7 m | 40.8 mm | 354.3 | -65.0 |
| 75% | 33.1, -96.5 | 18.9°C | 17.8°C | 998.4 mb | 431.7 m | 40.8 mm | 354.3 | -65.0 |
| 88% | 33.2, -96.5 | 18.9°C | 17.8°C | 998.4 mb | 431.7 m | 40.8 mm | 354.3 | -65.0 |
| Destination | 33.2, -96.5 | 20.1°C | 17.9°C | 997.2 mb | 600.2 m | 41.5 mm | 353.7 | -58.9 |
Midpoint vertical profile
17-Hour Propagation Forecast · 47 GHz
→ Steady
Best:
62
at 13:00 UTC
Worst:
40
at 21:00 UTC