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 · 47 GHz

Distance

69 mi (111 km)

Bearing

100.3°

Terrain

BLOCKED

Propagation

52/100

MARGINAL

HRRR Data

9 / 9 points

Loss Budget · 47 GHz

FSPL (free-space) 166.8 dB

Gaseous (O₂+H₂O) 9.5 dB

Diffraction loss 111.7 dB

TOTAL PATH LOSS 288.0 dB

Gas rate: 0.0850 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) -288.0 dB

RX Ant Gain 30.0 dBi

RX Power -210.0 dBm

Sensitivity (CW) -141.0 dBm

MARGIN -70.0 dB

Path Weather Avg

Temperature

68.7°F

20.4°C

Dewpoint

64.0°F

17.8°C

T/Td Gap

4.8°F

Abs Humidity

15.0 g/m³

Pressure

980.1 mb

PWAT

41.5 mm

BL Depth

754.0 m

Refrac Gradient

-58.9 N/km

Propagation Factors · 47 GHz

Rain 100

Pressure 82

Refractivity 55

Season 55

Sky Cover 50

Wind 50

T-Td Depression 38

Humidity 31

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	N_s	dN/dh
Source	33.4, -97.6	19.8°C	17.1°C	980.1 mb	776.9 m	40.5 mm	352.8	-54.7
13%	33.4, -97.5	20.3°C	17.2°C	987.0 mb	815.1 m	38.8 mm	350.0	-49.1
25%	33.3, -97.3	21.4°C	17.5°C	985.2 mb	1009.9 m	40.1 mm	351.4	-50.2
38%	33.3, -97.2	21.2°C	17.4°C	992.9 mb	648.0 m	41.1 mm	350.7	-53.3
Midpoint	33.3, -97.0	20.4°C	18.0°C	995.5 mb	636.7 m	42.0 mm	353.6	-51.5
63%	33.3, -96.9	20.4°C	18.4°C	996.8 mb	857.5 m	43.0 mm	355.4	-52.6
75%	33.2, -96.7	20.2°C	18.1°C	993.1 mb	659.9 m	44.6 mm	356.0	-56.4
88%	33.2, -96.6	20.0°C	18.2°C	995.4 mb	781.6 m	42.2 mm	356.1	-53.2
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 · 47 GHz

→ Steady

Best: 65 at 13:00 UTC Worst: 42 at 02:00 UTC