Path Calculator
Analyze microwave propagation between two points
Link Summary · 47 GHz
Distance
59 mi (94 km)
Bearing
40.5°
Terrain
BLOCKED
Propagation
55/100
MARGINAL
HRRR Data
9 / 9 points
Loss Budget · 47 GHz
FSPL (free-space)
165.4
dB
Gaseous (O₂+H₂O)
8.0
dB
Diffraction loss
101.7
dB
TOTAL PATH LOSS
275.0
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)
-275.0
dB
RX Ant Gain
30.0
dBi
RX Power
-197.0
dBm
Sensitivity (CW)
-141.0
dBm
MARGIN
-57.0
dB
Path Weather Avg
Temperature
71.8°F
22.1°C
Dewpoint
64.0°F
17.8°C
T/Td Gap
7.8°F
Abs Humidity
14.9 g/m³
Pressure
987.9 mb
PWAT
39.2 mm
BL Depth
519.8 m
Refrac Gradient
-64.4 N/km
Propagation Factors · 47 GHz
Rain
100
Pressure
82
Refractivity
55
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 | 32.5, -97.3 | 24.1°C | 17.9°C | 987.9 mb | 463.3 m | 37.8 mm | 352.5 | -48.9 |
| 13% | 32.6, -97.2 | 24.1°C | 17.9°C | 987.9 mb | 463.3 m | 37.8 mm | 352.5 | -48.9 |
| 25% | 32.6, -97.1 | 22.1°C | 18.2°C | 993.3 mb | 526.4 m | 40.5 mm | 351.0 | -50.4 |
| 38% | 32.7, -97.0 | 23.7°C | 17.9°C | 999.8 mb | 656.0 m | 41.6 mm | 350.5 | -52.6 |
| Midpoint | 32.8, -96.9 | 23.7°C | 17.9°C | 999.8 mb | 656.0 m | 41.6 mm | 350.5 | -52.6 |
| 63% | 32.9, -96.9 | 22.3°C | 17.4°C | 999.1 mb | 491.9 m | 38.1 mm | 349.8 | -64.4 |
| 75% | 33.0, -96.8 | 19.7°C | 17.5°C | 993.4 mb | 482.7 m | 37.7 mm | 353.7 | -63.8 |
| 88% | 33.0, -96.7 | 19.7°C | 17.5°C | 993.4 mb | 482.7 m | 37.7 mm | 353.7 | -63.8 |
| 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:
48
at 02:00 UTC