Path Calculator
Analyze microwave propagation between two points
Link Summary · 47 GHz
Distance
30 mi (48 km)
Bearing
244.7°
Terrain
BLOCKED
Propagation
50/100
MARGINAL
HRRR Data
9 / 9 points
Loss Budget · 47 GHz
FSPL (free-space)
159.4
dB
Gaseous (O₂+H₂O)
4.0
dB
Diffraction loss
60.0
dB
TOTAL PATH LOSS
223.4
dB
Gas rate: 0.0849 dB/km
H₂O: 0.0030 dB/km/g ·
O₂: 0.0400 dB/km
Abs humidity avg: 15.0 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)
-223.4
dB
RX Ant Gain
30.0
dBi
RX Power
-145.4
dBm
Sensitivity (CW)
-141.0
dBm
MARGIN
-5.4
dB
Path Weather Avg
Temperature
66.2°F
19.0°C
Dewpoint
63.8°F
17.7°C
T/Td Gap
2.4°F
Abs Humidity
15.0 g/m³
Pressure
994.0 mb
PWAT
40.5 mm
BL Depth
461.1 m
Refrac Gradient
-87.1 N/km
Propagation Factors · 47 GHz
Rain
100
Pressure
70
Refractivity
62
Season
55
Sky Cover
50
Wind
50
Humidity
31
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 | 33.3, -96.2 | 19.0°C | 18.0°C | 995.2 mb | 408.2 m | 41.7 mm | 356.6 | -87.1 |
| 13% | 33.3, -96.2 | 18.4°C | 17.6°C | 994.0 mb | 424.8 m | 39.3 mm | 355.4 | -61.0 |
| 25% | 33.3, -96.3 | 18.4°C | 17.6°C | 994.0 mb | 424.8 m | 39.3 mm | 355.4 | -61.0 |
| 38% | 33.2, -96.3 | 18.9°C | 17.4°C | 998.8 mb | 486.3 m | 40.6 mm | 351.6 | -54.9 |
| Midpoint | 33.2, -96.4 | 18.9°C | 17.4°C | 998.8 mb | 486.3 m | 40.6 mm | 351.6 | -54.9 |
| 63% | 33.2, -96.4 | 20.1°C | 17.9°C | 997.2 mb | 600.2 m | 41.5 mm | 353.7 | -58.9 |
| 75% | 33.2, -96.5 | 18.9°C | 17.8°C | 998.4 mb | 431.7 m | 40.8 mm | 354.3 | -65.0 |
| 88% | 33.1, -96.6 | 18.9°C | 17.8°C | 998.4 mb | 431.7 m | 40.8 mm | 354.3 | -65.0 |
| 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:
61
at 13:00 UTC
Worst:
38
at 21:00 UTC