Path Calculator
Analyze microwave propagation between two points
Link Summary · 47 GHz
Distance
61 mi (99 km)
Bearing
106.4°
Terrain
BLOCKED
Propagation
53/100
MARGINAL
HRRR Data
9 / 9 points
Loss Budget · 47 GHz
FSPL (free-space)
165.8
dB
Gaseous (O₂+H₂O)
8.3
dB
Diffraction loss
103.3
dB
TOTAL PATH LOSS
277.3
dB
Gas rate: 0.0848 dB/km
H₂O: 0.0030 dB/km/g ·
O₂: 0.0400 dB/km
Abs humidity avg: 14.9 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)
-277.3
dB
RX Ant Gain
30.0
dBi
RX Power
-199.3
dBm
Sensitivity (CW)
-141.0
dBm
MARGIN
-59.3
dB
Path Weather Avg
Temperature
68.7°F
20.4°C
Dewpoint
63.8°F
17.6°C
T/Td Gap
4.9°F
Abs Humidity
14.9 g/m³
Pressure
980.1 mb
PWAT
40.8 mm
BL Depth
632.9 m
Refrac Gradient
-63.7 N/km
Propagation Factors · 47 GHz
Rain
100
Pressure
82
Refractivity
55
Season
55
Sky Cover
50
Wind
50
T-Td Depression
38
Humidity
32
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 | 33.4, -97.6 | 19.8°C | 17.1°C | 980.1 mb | 776.9 m | 40.5 mm | 352.8 | -54.7 |
| 13% | 33.3, -97.5 | 20.3°C | 17.2°C | 987.0 mb | 815.1 m | 38.8 mm | 350.0 | -49.1 |
| 25% | 33.3, -97.4 | 20.9°C | 17.5°C | 989.2 mb | 639.6 m | 40.6 mm | 351.2 | -55.5 |
| 38% | 33.3, -97.2 | 21.2°C | 17.4°C | 992.9 mb | 648.0 m | 41.1 mm | 350.7 | -53.3 |
| Midpoint | 33.2, -97.1 | 22.1°C | 17.6°C | 994.1 mb | 687.6 m | 42.0 mm | 351.2 | -49.4 |
| 63% | 33.2, -97.0 | 20.4°C | 18.0°C | 995.5 mb | 636.7 m | 42.0 mm | 353.6 | -51.5 |
| 75% | 33.2, -96.9 | 19.9°C | 18.3°C | 996.2 mb | 569.4 m | 41.7 mm | 355.2 | -56.2 |
| 88% | 33.2, -96.7 | 19.5°C | 17.9°C | 992.5 mb | 466.5 m | 40.1 mm | 354.0 | -63.7 |
| 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:
67
at 13:00 UTC
Worst:
38
at 02:00 UTC