Path Calculator
Analyze microwave propagation between two points
Link Summary · 10 GHz
Distance
140 mi (225 km)
Bearing
112.0°
Terrain
BLOCKED
Propagation
68/100
GOOD
HRRR Data
9 / 9 points
Loss Budget · 10 GHz
FSPL (free-space)
159.5
dB
Gaseous (O₂+H₂O)
1.6
dB
Diffraction loss
126.0
dB
TOTAL PATH LOSS
287.1
dB
Gas rate: 0.0070 dB/km
H₂O: 0.0000 dB/km/g ·
O₂: 0.0070 dB/km
Abs humidity avg: 6.7 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)
-287.1
dB
RX Ant Gain
30.0
dBi
RX Power
-209.1
dBm
Sensitivity (CW)
-141.0
dBm
MARGIN
-69.1
dB
Path Weather Avg
Temperature
80.6°F
27.0°C
Dewpoint
42.6°F
5.9°C
T/Td Gap
38.0°F
Abs Humidity
6.7 g/m³
Pressure
974.0 mb
PWAT
13.5 mm
BL Depth
2271.0 m
Refrac Gradient
0 N/km
Propagation Factors · 10 GHz
Rain
100
Pressure
88
PWAT
75
Humidity
70
Season
68
T-Td Depression
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 | 34.0, -98.7 | 27.9°C | 4.0°C | 977.6 mb | 2329.7 m | 12.2 mm | ||
| 13% | 33.9, -98.4 | 27.7°C | 4.5°C | 980.7 mb | 2319.0 m | 12.5 mm | ||
| 25% | 33.8, -98.1 | 27.2°C | 4.5°C | 982.8 mb | 2334.2 m | 12.2 mm | ||
| 38% | 33.7, -97.9 | 26.4°C | 5.1°C | 979.0 mb | 2249.9 m | 12.3 mm | ||
| Midpoint | 33.6, -97.6 | 24.8°C | 8.8°C | 974.0 mb | 2197.3 m | 14.3 mm | ||
| 63% | 33.5, -97.3 | 26.4°C | 8.3°C | 986.2 mb | 2113.6 m | 14.2 mm | ||
| 75% | 33.4, -97.0 | 26.8°C | 7.2°C | 992.2 mb | 2249.6 m | 14.1 mm | ||
| 88% | 33.3, -96.7 | 28.1°C | 5.7°C | 991.9 mb | 2354.5 m | 15.8 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 · 10 GHz
→ Steady
Best:
84
at 03:00 UTC
Worst:
74
at 12:00 UTC