Path Calculator
Analyze microwave propagation between two points
Link Summary · 47 GHz
Distance
65 mi (105 km)
Bearing
132.1°
Terrain
BLOCKED
Propagation
72/100
GOOD
HRRR Data
9 / 9 points
Loss Budget · 47 GHz
FSPL (free-space)
166.3
dB
Gaseous (O₂+H₂O)
6.5
dB
Diffraction loss
114.1
dB
TOTAL PATH LOSS
286.9
dB
Gas rate: 0.0613 dB/km
H₂O: 0.0030 dB/km/g ·
O₂: 0.0400 dB/km
Abs humidity avg: 7.1 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)
-286.9
dB
RX Ant Gain
30.0
dBi
RX Power
-208.9
dBm
Sensitivity (CW)
-141.0
dBm
MARGIN
-68.9
dB
Path Weather Avg
Temperature
81.0°F
27.2°C
Dewpoint
44.2°F
6.8°C
T/Td Gap
36.8°F
Abs Humidity
7.1 g/m³
Pressure
985.0 mb
PWAT
14.7 mm
BL Depth
2237.8 m
Refrac Gradient
0 N/km
Propagation Factors · 47 GHz
Rain
100
T-Td Depression
96
Humidity
87
Pressure
82
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 | 33.8, -97.3 | 27.2°C | 9.0°C | 985.0 mb | 2269.7 m | 16.8 mm | ||
| 13% | 33.7, -97.2 | 27.7°C | 8.2°C | 990.1 mb | 2285.3 m | 16.2 mm | ||
| 25% | 33.7, -97.1 | 26.6°C | 8.7°C | 988.8 mb | 2168.0 m | 15.1 mm | ||
| 38% | 33.6, -97.0 | 26.7°C | 8.1°C | 989.7 mb | 2133.5 m | 14.6 mm | ||
| Midpoint | 33.5, -96.9 | 27.2°C | 6.8°C | 992.5 mb | 2191.1 m | 13.8 mm | ||
| 63% | 33.4, -96.8 | 26.7°C | 6.0°C | 990.1 mb | 2235.9 m | 13.8 mm | ||
| 75% | 33.3, -96.7 | 27.9°C | 4.9°C | 993.0 mb | 2275.5 m | 14.2 mm | ||
| 88% | 33.3, -96.6 | 27.6°C | 4.8°C | 995.4 mb | 2290.7 m | 13.7 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:
80
at 01:00 UTC
Worst:
66
at 13:00 UTC