Distance
80.7
km · 50.1 mi
Bearing
25.8°
true · rev 205.8°
Terrain
BLOCKED
86.5 dB diffraction
Propagation
62/100
MARGINAL
Margin
-30.5
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 ≈ 64 m AGL at the midpoint (191 m above the chord, 96 m above the 4/3 horizon), so its Fresnel zone (F₁ ≈ 15.9 m) clears with margin. The geometric line of sight is obstructed — buried 69 m below terrain at its worst point.
Great circle
32.468, -96.993 → 33.12, -96.615 · 25.8°
Loss budget · 24 GHz
FSPL (free-space)
158.2
dB
Gaseous (O₂ + H₂O)
3.9
dB
Diffraction
86.5
dB
Rain attenuation
0.0
dB
Total path loss
248.5
dB
Gas rate 0.0479 dB/km · H₂O 0.0020 dB/km/g · O₂ 0.0200 dB/km
Path abs. humidity avg 13.9 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
-248.5
dB
RX antenna gain
30.0
dBi
RX power
-170.5
dBm
Sensitivity (CW, 500 Hz)
-141.0
dBm
Margin
-30.5
dB
Path weather · HRRR average of 9 samples
Temperature
73.1 °F
22.8 °C
Dewpoint
62.0 °F
16.7 °C
T/Td gap
11.1 °F
6.2 °C
Abs. humidity
13.9
g/m³
Pressure
985.2
mb
PWAT
23.5
mm
BL depth
254.4
m AGL
Refrac. gradient
-120.0
N/km · super-refractive
Propagation factors · 24 GHz
62/100
Rain
100
14%
Humidity
1
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, -97.0
21.9 °C
16.4 °C
985.2 mb
-120.0
217.1
23.2 mm
—
13%
32.5, -96.9
21.9 °C
16.4 °C
985.2 mb
-120.0
217.1
23.2 mm
—
25%
32.6, -96.9
21.2 °C
17.1 °C
988.2 mb
-92.1
201.3
23.9 mm
—
38%
32.7, -96.9
24.2 °C
16.2 °C
991.3 mb
-86.6
300.0
24.0 mm
—
Midpoint
32.8, -96.8
22.4 °C
17.6 °C
995.8 mb
-103.8
256.6
24.8 mm
—
63%
32.9, -96.8
23.3 °C
17.1 °C
992.3 mb
-101.9
274.3
24.2 mm
—
75%
33.0, -96.7
24.5 °C
15.6 °C
986.8 mb
-81.7
310.9
22.9 mm
—
88%
33.0, -96.7
22.2 °C
17.8 °C
991.0 mb
-90.0
245.8
23.3 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 66
at 12:00 UTC
· low 54
at 01:00 UTC
| Hour UTC | Score | Rating |
|---|---|---|
| 08:00 | 60 | MARGINAL |
| 09:00 | 62 | MARGINAL |
| 10:00 | 62 | MARGINAL |
| 11:00 | 61 | MARGINAL |
| 12:00 | 66 | GOOD |
| 13:00 | 62 | MARGINAL |
| 14:00 | 62 | MARGINAL |
| 15:00 | 61 | MARGINAL |
| 16:00 | 58 | MARGINAL |
| 17:00 | 59 | MARGINAL |
| 18:00 | 62 | MARGINAL |
| 19:00 | 59 | MARGINAL |
| 20:00 | 59 | MARGINAL |
| 21:00 | 59 | MARGINAL |
| 22:00 | 60 | MARGINAL |
| 23:00 | 59 | MARGINAL |
| 00:00 | 58 | MARGINAL |
| 01:00 · now | 54 | MARGINAL |