Path Calculator
Analyze microwave propagation between two points
Link Summary · 47 GHz
Distance
64 mi (102 km)
Bearing
170.5°
Terrain
BLOCKED
Propagation
56/100
MARGINAL
HRRR Data
9 / 9 points
Loss Budget · 47 GHz
FSPL (free-space)
166.1
dB
Gaseous (O₂+H₂O)
8.6
dB
Diffraction loss
116.2
dB
TOTAL PATH LOSS
290.9
dB
Gas rate: 0.0845 dB/km
H₂O: 0.0030 dB/km/g ·
O₂: 0.0400 dB/km
Abs humidity avg: 14.8 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)
-290.9
dB
RX Ant Gain
30.0
dBi
RX Power
-212.9
dBm
Sensitivity (CW)
-141.0
dBm
MARGIN
-72.9
dB
Path Weather Avg
Temperature
68.4°F
20.2°C
Dewpoint
63.6°F
17.6°C
T/Td Gap
4.8°F
Abs Humidity
14.8 g/m³
Pressure
989.4 mb
PWAT
38.4 mm
BL Depth
630.1 m
Refrac Gradient
-84.8 N/km
Propagation Factors · 47 GHz
Rain
100
Pressure
82
Refractivity
62
Season
55
Sky Cover
50
Wind
50
T-Td Depression
38
PWAT
35
Humidity
32
Time of Day
18
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 | 34.0, -96.8 | 19.1°C | 16.8°C | 990.5 mb | 577.5 m | 34.7 mm | 349.3 | -78.0 |
| 13% | 33.9, -96.8 | 20.1°C | 17.3°C | 992.2 mb | 593.2 m | 34.7 mm | 349.7 | -68.7 |
| 25% | 33.8, -96.8 | 20.8°C | 17.5°C | 995.7 mb | 774.2 m | 37.7 mm | 348.6 | -84.2 |
| 38% | 33.7, -96.7 | 21.2°C | 17.6°C | 992.6 mb | 646.8 m | 37.3 mm | 348.5 | -84.8 |
| Midpoint | 33.6, -96.7 | 21.2°C | 17.6°C | 992.6 mb | 646.8 m | 37.3 mm | 348.5 | -84.8 |
| 63% | 33.5, -96.7 | 20.3°C | 17.6°C | 989.4 mb | 611.2 m | 41.1 mm | 351.5 | -62.7 |
| 75% | 33.3, -96.7 | 20.0°C | 17.7°C | 994.3 mb | 583.6 m | 39.8 mm | 353.6 | -57.8 |
| 88% | 33.2, -96.6 | 20.0°C | 18.2°C | 995.4 mb | 781.6 m | 42.2 mm | 356.1 | -53.2 |
| Destination | 33.1, -96.6 | 19.4°C | 17.8°C | 995.0 mb | 456.2 m | 40.3 mm | 354.2 | -62.2 |
Midpoint vertical profile
17-Hour Propagation Forecast · 47 GHz
→ Steady
Best:
68
at 13:00 UTC
Worst:
49
at 02:00 UTC