Distance
94.2
km · 58.6 mi
Bearing
40.5°
true · rev 220.5°
Terrain
BLOCKED
90.4 dB diffraction
Propagation
63/100
MARGINAL
Margin
-36.2
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 ≈ 87 m AGL at the midpoint (261 m above the chord, 131 m above the 4/3 horizon), so its Fresnel zone (F₁ ≈ 17.2 m) clears with margin. The geometric line of sight is obstructed — buried 79 m below terrain at its worst point.
Great circle
32.477, -97.273 → 33.12, -96.615 · 40.5°
Loss budget · 24 GHz
FSPL (free-space)
159.5
dB
Gaseous (O₂ + H₂O)
4.3
dB
Diffraction
90.4
dB
Rain attenuation
0.0
dB
Total path loss
254.2
dB
Gas rate 0.0456 dB/km · H₂O 0.0020 dB/km/g · O₂ 0.0200 dB/km
Path abs. humidity avg 12.8 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
-254.2
dB
RX antenna gain
30.0
dBi
RX power
-176.2
dBm
Sensitivity (CW, 500 Hz)
-141.0
dBm
Margin
-36.2
dB
Path weather · HRRR average of 9 samples
Temperature
74.4 °F
23.5 °C
Dewpoint
59.9 °F
15.5 °C
T/Td gap
14.5 °F
8.1 °C
Abs. humidity
12.8
g/m³
Pressure
983.7
mb
PWAT
23.5
mm
BL depth
275.5
m AGL
Refrac. gradient
-119.6
N/km · super-refractive
Propagation factors · 24 GHz
63/100
Rain
100
14%
Humidity
5
13%
PWAT
60
11%
Season
47
11%
T-Td Depression
80
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, -97.3
22.7 °C
14.8 °C
983.7 mb
-119.6
232.5
23.2 mm
—
13%
32.6, -97.2
22.7 °C
14.8 °C
983.7 mb
-119.6
232.5
23.2 mm
—
25%
32.6, -97.1
22.5 °C
15.4 °C
987.9 mb
-104.2
252.5
24.0 mm
—
38%
32.7, -97.0
23.7 °C
15.5 °C
993.7 mb
-82.6
268.9
24.3 mm
—
Midpoint
32.8, -96.9
23.7 °C
15.5 °C
993.7 mb
-82.6
268.9
24.3 mm
—
63%
32.9, -96.9
23.7 °C
16.1 °C
993.0 mb
-80.7
335.5
24.5 mm
—
75%
33.0, -96.8
24.5 °C
15.6 °C
986.8 mb
-81.7
310.9
22.9 mm
—
88%
33.0, -96.7
24.5 °C
15.6 °C
986.8 mb
-81.7
310.9
22.9 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 62
at 13:00 UTC
· low 57
at 22:00 UTC
| Hour UTC | Score | Rating |
|---|---|---|
| 08:00 | 59 | MARGINAL |
| 09:00 | 59 | MARGINAL |
| 10:00 | 61 | MARGINAL |
| 11:00 | 60 | MARGINAL |
| 12:00 | 61 | MARGINAL |
| 13:00 | 62 | MARGINAL |
| 14:00 | 62 | MARGINAL |
| 15:00 | 61 | MARGINAL |
| 16:00 | 58 | MARGINAL |
| 17:00 | 59 | MARGINAL |
| 18:00 | 60 | MARGINAL |
| 19:00 | 58 | MARGINAL |
| 20:00 | 58 | MARGINAL |
| 21:00 | 62 | MARGINAL |
| 22:00 | 57 | MARGINAL |
| 23:00 | 58 | MARGINAL |
| 00:00 | 58 | MARGINAL |
| 01:00 · now | 60 | MARGINAL |