Distance
117.8
km · 73.2 mi
Bearing
304.3°
true · rev 124.3°
Terrain
BLOCKED
105.7 dB diffraction
Propagation
62/100
MARGINAL
Margin
-55.0
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 ≈ 136 m AGL at the midpoint (409 m above the chord, 204 m above the 4/3 horizon), so its Fresnel zone (F₁ ≈ 19.2 m) clears with margin. The geometric line of sight is obstructed — buried 182 m below terrain at its worst point.
Great circle
32.527, -95.57 → 33.12, -96.615 · 304.3°
Loss budget · 24 GHz
FSPL (free-space)
161.5
dB
Gaseous (O₂ + H₂O)
5.8
dB
Diffraction
105.7
dB
Rain attenuation
0.0
dB
Total path loss
273.0
dB
Gas rate 0.0489 dB/km · H₂O 0.0020 dB/km/g · O₂ 0.0200 dB/km
Path abs. humidity avg 14.4 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
-273.0
dB
RX antenna gain
30.0
dBi
RX power
-195.0
dBm
Sensitivity (CW, 500 Hz)
-141.0
dBm
Margin
-55.0
dB
Path weather · HRRR average of 9 samples
Temperature
72.0 °F
22.2 °C
Dewpoint
63.0 °F
17.2 °C
T/Td gap
9.0 °F
5.0 °C
Abs. humidity
14.4
g/m³
Pressure
987.4
mb
PWAT
20.7
mm
BL depth
230.2
m AGL
Refrac. gradient
-129.5
N/km · super-refractive
Propagation factors · 24 GHz
62/100
Rain
100
14%
Humidity
0
13%
PWAT
60
11%
Season
47
11%
T-Td Depression
60
10%
Refractivity
72
10%
Pressure
82
10%
Sky Cover
50
8%
Wind
50
8%
Time of Day
55
4%
Atmospheric profile
HRRR 3 km
Valid 2026-05-15 08:00 UTC
· 9 samples
Point
Lat, lon
Temp
Dewpt
Press
dN/dh
BL m
PWAT
Duct
Source
32.5, -95.6
21.0 °C
17.9 °C
994.4 mb
-90.7
195.4
19.3 mm
—
13%
32.6, -95.7
21.6 °C
17.2 °C
995.9 mb
-96.9
213.6
19.3 mm
—
25%
32.7, -95.8
22.2 °C
16.3 °C
992.7 mb
-120.4
212.3
18.4 mm
—
38%
32.7, -96.0
22.5 °C
17.4 °C
994.8 mb
-124.1
236.8
19.5 mm
—
Midpoint
32.8, -96.1
22.1 °C
17.3 °C
994.0 mb
-129.5
246.3
20.9 mm
—
63%
32.9, -96.2
23.4 °C
17.1 °C
993.0 mb
-103.1
244.9
21.5 mm
—
75%
33.0, -96.4
21.4 °C
17.6 °C
989.8 mb
-103.8
223.7
22.3 mm
—
88%
33.0, -96.5
21.7 °C
18.0 °C
992.9 mb
-100.3
231.8
23.0 mm
—
Destination
33.1, -96.6
24.1 °C
16.0 °C
987.4 mb
-91.5
266.6
22.0 mm
—
Midpoint vertical profile
18-hour forecast · this path · 24 GHz
→ steady
Peak 65
at 14:00 UTC
· low 54
at 00:00 UTC
| Hour UTC | Score | Rating |
|---|---|---|
| 08:00 | 63 | MARGINAL |
| 09:00 | 64 | MARGINAL |
| 10:00 | 61 | MARGINAL |
| 11:00 | 61 | MARGINAL |
| 12:00 | 61 | MARGINAL |
| 13:00 | 63 | MARGINAL |
| 14:00 | 65 | GOOD |
| 15:00 | 62 | MARGINAL |
| 16:00 | 60 | MARGINAL |
| 17:00 | 60 | MARGINAL |
| 18:00 | 60 | MARGINAL |
| 19:00 | 63 | MARGINAL |
| 20:00 | 61 | MARGINAL |
| 21:00 | 62 | MARGINAL |
| 22:00 | 58 | MARGINAL |
| 23:00 | 58 | MARGINAL |
| 00:00 | 54 | MARGINAL |
| 01:00 · now | 56 | MARGINAL |