Distance
153.5
km · 95.4 mi
Bearing
115.8°
true · rev 295.8°
Terrain
BLOCKED
124.8 dB diffraction
Propagation
70/100
GOOD
Margin
-75.8
dB over CW threshold
Terrain profile · SRTM 30 m + canopy + MS footprints
Line of sight
1st Fresnel
Duct layer
Horizon ray
Common volume
Over the horizon: the two horizon-skimming rays intersect at the common volume ≈ 231 m AGL at the midpoint (693 m above the chord, 347 m above the 4/3 horizon), so its Fresnel zone (F₁ ≈ 21.9 m) clears with margin. The geometric line of sight is obstructed — buried 400 m below terrain at its worst point.
Great circle
33.798, -97.937 → 33.189, -96.452 · 115.8°
Loss budget · 24 GHz
FSPL (free-space)
163.8
dB
Gaseous (O₂ + H₂O)
5.3
dB
Diffraction
124.8
dB
Rain attenuation
0.0
dB
Total path loss
293.8
dB
Gas rate 0.0343 dB/km · H₂O 0.0020 dB/km/g · O₂ 0.0200 dB/km
Path abs. humidity avg 7.1 g/m³
Power budget
TX power
20.0
dBm
(100.0 mW)
TX antenna gain
30.0
dBi
Feed loss (×2)
-2.0
dB
EIRP
48.0
dBm
Path loss
-293.8
dB
RX antenna gain
30.0
dBi
RX power
-215.8
dBm
Sensitivity (CW, 500 Hz)
-141.0
dBm
Margin
-75.8
dB
Path weather · HRRR average of 9 samples
Temperature
80.3 °F
26.8 °C
Dewpoint
44.2 °F
6.8 °C
T/Td gap
36.1 °F
20.1 °C
Abs. humidity
7.1
g/m³
Pressure
974.0
mb
PWAT
14.0
mm
BL depth
2242.3
m AGL
Refrac. gradient
0
N/km
Propagation factors · 24 GHz
70/100
Rain
100
14%
Humidity
57
13%
PWAT
80
11%
Season
47
11%
T-Td Depression
96
10%
Refractivity
50
10%
Pressure
88
10%
Sky Cover
50
8%
Wind
50
8%
Time of Day
18
4%
Atmospheric profile
HRRR 3 km
Valid 2026-05-03 20:00 UTC
· 9 samples
Point
Lat, lon
Temp
Dewpt
Press
dN/dh
BL m
PWAT
Duct
Source
33.8, -97.9
27.1 °C
6.3 °C
984.2 mb
2305.5
13.7 mm
—
13%
33.7, -97.8
27.4 °C
6.1 °C
983.1 mb
2318.3
14.0 mm
—
25%
33.6, -97.6
24.8 °C
8.8 °C
974.0 mb
2197.3
14.3 mm
—
38%
33.6, -97.4
26.3 °C
8.9 °C
981.1 mb
2101.0
14.5 mm
—
Midpoint
33.5, -97.2
26.4 °C
8.3 °C
986.2 mb
2113.6
14.2 mm
—
63%
33.4, -97.0
26.8 °C
7.2 °C
992.2 mb
2249.6
14.1 mm
—
75%
33.3, -96.8
27.6 °C
5.9 °C
993.6 mb
2289.9
14.3 mm
—
88%
33.3, -96.6
27.6 °C
4.7 °C
994.3 mb
2315.0
13.5 mm
—
Destination
33.2, -96.5
27.6 °C
4.8 °C
995.4 mb
2290.7
13.7 mm
—
Midpoint vertical profile
17-hour forecast · this path · 24 GHz
→ steady
Peak 75
at 03:00 UTC
· low 65
at 12:00 UTC
| Hour UTC | Score | Rating |
|---|---|---|
| 20:00 | 71 | GOOD |
| 21:00 | 73 | GOOD |
| 22:00 | 74 | GOOD |
| 23:00 | 73 | GOOD |
| 00:00 | 71 | GOOD |
| 01:00 | 71 | GOOD |
| 02:00 | 71 | GOOD |
| 03:00 | 75 | GOOD |
| 04:00 | 72 | GOOD |
| 05:00 | 72 | GOOD |
| 06:00 | 72 | GOOD |
| 07:00 | 73 | GOOD |
| 08:00 | 72 | GOOD |
| 09:00 | 71 | GOOD |
| 10:00 | 72 | GOOD |
| 11:00 | 68 | GOOD |
| 12:00 · now | 65 | GOOD |