Distance
35.3
km · 21.9 mi
Bearing
265.5°
true · rev 85.5°
Terrain
BLOCKED
63.2 dB diffraction
Propagation
67/100
GOOD
Margin
+2.6
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 ≈ 12 m AGL at the midpoint (37 m above the chord, 18 m above the 4/3 horizon), so its Fresnel zone (F₁ ≈ 10.5 m) clears with margin. The geometric line of sight is obstructed — buried 21 m below terrain at its worst point.
Great circle
33.145, -96.238 → 33.12, -96.615 · 265.5°
Loss budget · 24 GHz
FSPL (free-space)
151.0
dB
Gaseous (O₂ + H₂O)
1.2
dB
Diffraction
63.2
dB
Rain attenuation
0.0
dB
Total path loss
215.4
dB
Gas rate 0.0351 dB/km · H₂O 0.0020 dB/km/g · O₂ 0.0200 dB/km
Path abs. humidity avg 7.5 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
-215.4
dB
RX antenna gain
30.0
dBi
RX power
-137.4
dBm
Sensitivity (CW, 500 Hz)
-141.0
dBm
Margin
2.6
dB
Path weather · HRRR average of 9 samples
Temperature
79.9 °F
26.6 °C
Dewpoint
45.6 °F
7.6 °C
T/Td gap
34.3 °F
19.1 °C
Abs. humidity
7.5
g/m³
Pressure
994.1
mb
PWAT
14.8
mm
BL depth
2263.7
m AGL
Refrac. gradient
0
N/km
Propagation factors · 24 GHz
67/100
Rain
100
14%
Humidity
52
13%
PWAT
80
11%
Season
47
11%
T-Td Depression
96
10%
Refractivity
50
10%
Pressure
70
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
33.1, -96.2
26.3 °C
7.7 °C
996.2 mb
2198.8
13.8 mm
—
13%
33.1, -96.3
26.3 °C
7.7 °C
996.2 mb
2198.8
13.8 mm
—
25%
33.1, -96.3
25.7 °C
9.1 °C
996.9 mb
2206.6
14.9 mm
—
38%
33.1, -96.4
25.7 °C
9.1 °C
996.9 mb
2206.6
14.9 mm
—
Midpoint
33.1, -96.4
25.7 °C
9.1 °C
996.9 mb
2206.6
14.9 mm
—
63%
33.1, -96.5
26.8 °C
8.8 °C
997.3 mb
2300.2
16.3 mm
—
75%
33.1, -96.5
26.8 °C
8.8 °C
997.3 mb
2300.2
16.3 mm
—
88%
33.1, -96.6
28.2 °C
3.9 °C
994.1 mb
2377.9
13.9 mm
—
Destination
33.1, -96.6
28.2 °C
3.9 °C
994.1 mb
2377.9
13.9 mm
—
Midpoint vertical profile
17-hour forecast · this path · 24 GHz
→ steady
Peak 72
at 22:00 UTC
· low 63
at 12:00 UTC
| Hour UTC | Score | Rating |
|---|---|---|
| 20:00 | 69 | GOOD |
| 21:00 | 71 | GOOD |
| 22:00 | 72 | GOOD |
| 23:00 | 70 | GOOD |
| 00:00 | 69 | GOOD |
| 01:00 | 67 | GOOD |
| 02:00 | 66 | GOOD |
| 03:00 | 69 | GOOD |
| 04:00 | 68 | GOOD |
| 05:00 | 70 | GOOD |
| 06:00 | 69 | GOOD |
| 07:00 | 70 | GOOD |
| 08:00 | 71 | GOOD |
| 09:00 | 69 | GOOD |
| 10:00 | 70 | GOOD |
| 11:00 | 70 | GOOD |
| 12:00 · now | 63 | MARGINAL |