Path Calculator

Analyze microwave propagation between two points

Source

Destination ( or grid)

Band

TX Power (dBm)

TX Height (ft)

TX Gain (dBi)

RX Height (ft)

RX Gain (dBi)

Link Summary · 10 GHz

Distance

221 mi (356 km)

Bearing

230.9°

Terrain

BLOCKED

Propagation

80/100

EXCELLENT

HRRR Data

9 / 9 points

Loss Budget · 10 GHz

FSPL (free-space) 163.5 dB

Gaseous (O₂+H₂O) 2.5 dB

Diffraction loss 137.2 dB

TOTAL PATH LOSS 303.2 dB

Gas rate: 0.0070 dB/km

H₂O: 0.0000 dB/km/g · O₂: 0.0070 dB/km

Abs humidity avg: 12.8 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) -303.2 dB

RX Ant Gain 30.0 dBi

RX Power -225.2 dBm

Sensitivity (CW) -141.0 dBm

MARGIN -85.2 dB

Path Weather Avg

Temperature

67.6°F

19.8°C

Dewpoint

59.4°F

15.2°C

T/Td Gap

8.3°F

Abs Humidity

12.8 g/m³

Pressure

973.0 mb

PWAT

23.9 mm

BL Depth

260.6 m

Refrac Gradient

-179.5 N/km

Propagation Factors · 10 GHz

Rain 100

Refractivity 92

Humidity 90

PWAT 90

Pressure 88

T-Td Depression 85

Season 68

Time of Day 55

Sky Cover 50

Wind 50

Atmospheric Profile

HRRR (3 km) Valid 2026-05-15 08:00 UTC 9 path samples

Point	Lat, Lon	Temp	Dewpt	Press	HPBL	PWAT	N_s	dN/dh
Source	35.2, -93.6	19.1°C	10.1°C	996.7 mb	333.7 m	24.7 mm	315.7	-82.7
13%	34.9, -94.0	18.6°C	13.3°C	977.2 mb	286.6 m	22.0 mm	333.3	-125.4
25%	34.7, -94.4	17.2°C	12.8°C	973.0 mb	333.7 m	23.8 mm	333.7	-145.4
38%	34.4, -94.8	17.9°C	15.4°C	982.1 mb	290.9 m	25.7 mm	342.8	-179.5
Midpoint	34.1, -95.1	18.0°C	16.2°C	993.9 mb	152.2 m	26.4 mm	346.5	-155.1
63%	33.9, -95.5	19.4°C	18.3°C	995.7 mb	186.1 m	25.7 mm	354.5	-173.6
75%	33.6, -95.9	21.8°C	17.1°C	988.8 mb	245.1 m	23.7 mm	344.4	-116.3
88%	33.4, -96.2	22.1°C	17.6°C	985.5 mb	250.6 m	21.7 mm	347.8	-148.6
Destination	33.1, -96.6	24.1°C	16.0°C	987.4 mb	266.6 m	22.0 mm	339.6	-91.5

Midpoint vertical profile

18-Hour Propagation Forecast · 10 GHz

→ Steady

Best: 79 at 13:00 UTC Worst: 67 at 00:00 UTC