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 · 24 GHz

Distance

156 mi (251 km)

Bearing

39.5°

Terrain

BLOCKED

Propagation

55/100

MARGINAL

HRRR Data

9 / 9 points

Loss Budget · 24 GHz

FSPL (free-space) 168.0 dB

Gaseous (O₂+H₂O) 13.0 dB

Diffraction loss 137.5 dB

TOTAL PATH LOSS 318.5 dB

Gas rate: 0.0519 dB/km

H₂O: 0.0020 dB/km/g · O₂: 0.0200 dB/km

Abs humidity avg: 15.9 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) -318.5 dB

RX Ant Gain 30.0 dBi

RX Power -240.5 dBm

Sensitivity (CW) -141.0 dBm

MARGIN -100.5 dB

Path Weather Avg

Temperature

77.3°F

25.2°C

Dewpoint

66.1°F

19.0°C

T/Td Gap

11.2°F

Abs Humidity

15.9 g/m³

Pressure

969.5 mb

PWAT

39.0 mm

BL Depth

871.9 m

Refrac Gradient

-72.4 N/km

Propagation Factors · 24 GHz

Rain 100

Pressure 88

T-Td Depression 60

Refractivity 55

Sky Cover 50

Wind 50

Season 47

PWAT 35

Time of Day 18

Humidity 0

Atmospheric Profile

HRRR (3 km) Valid 2026-05-10 21:00 UTC 9 path samples

Point	Lat, Lon	Temp	Dewpt	Press	HPBL	PWAT	N_s	dN/dh
Source	31.5, -98.2	29.5°C	20.9°C	969.5 mb	1526.8 m	36.1 mm	359.1	-72.4
13%	31.7, -98.0	29.6°C	19.9°C	973.2 mb	1469.0 m	36.7 mm	352.4	-65.2
25%	31.9, -97.7	29.4°C	19.3°C	978.2 mb	1571.7 m	40.1 mm	350.4	-55.7
38%	32.1, -97.5	26.9°C	19.8°C	993.0 mb	730.8 m	42.3 mm	356.3	-46.9
Midpoint	32.3, -97.3	24.6°C	18.4°C	988.6 mb	493.0 m	38.8 mm	355.3	-52.3
63%	32.5, -97.1	24.3°C	18.6°C	993.5 mb	511.9 m	38.7 mm	353.1	-48.7
75%	32.8, -96.9	22.4°C	17.9°C	997.1 mb	505.2 m	38.6 mm	352.3	-59.1
88%	33.0, -96.7	19.7°C	18.0°C	998.0 mb	438.2 m	38.7 mm	353.2	-71.9
Destination	33.2, -96.5	20.1°C	17.9°C	997.2 mb	600.2 m	41.5 mm	353.7	-58.9

Midpoint vertical profile

17-Hour Propagation Forecast · 24 GHz

→ Steady

Best: 63 at 13:00 UTC Worst: 50 at 00:00 UTC