Distance
251.6
km · 156.3 mi
Bearing
229.0°
true · rev 49.0°
Terrain
BLOCKED
129.8 dB diffraction
Propagation
69/100
GOOD
Margin
-88.7
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 ≈ 621 m AGL at the midpoint (1862 m above the chord, 931 m above the 4/3 horizon), so its Fresnel zone (F₁ ≈ 28.0 m) clears with margin. The geometric line of sight is obstructed — buried 635 m below terrain at its worst point.
Great circle
34.689, -94.411 → 33.189, -96.452 · 229.0°
Loss budget · 24 GHz
FSPL (free-space)
168.1
dB
Gaseous (O₂ + H₂O)
8.8
dB
Diffraction
129.8
dB
Rain attenuation
0.0
dB
Total path loss
306.7
dB
Gas rate 0.0352 dB/km · H₂O 0.0020 dB/km/g · O₂ 0.0200 dB/km
Path abs. humidity avg 7.6 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
-306.7
dB
RX antenna gain
30.0
dBi
RX power
-228.7
dBm
Sensitivity (CW, 500 Hz)
-141.0
dBm
Margin
-88.7
dB
Path weather · HRRR average of 9 samples
Temperature
80.7 °F
27.0 °C
Dewpoint
45.8 °F
7.7 °C
T/Td gap
34.8 °F
19.3 °C
Abs. humidity
7.6
g/m³
Pressure
979.5
mb
PWAT
15.3
mm
BL depth
2188.9
m AGL
Refrac. gradient
0
N/km
Propagation factors · 24 GHz
69/100
Rain
100
14%
Humidity
51
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
34.7, -94.4
25.2 °C
10.3 °C
979.5 mb
1689.5
15.6 mm
—
13%
34.5, -94.7
24.7 °C
11.7 °C
985.4 mb
1702.5
15.7 mm
—
25%
34.3, -94.9
25.2 °C
11.9 °C
988.4 mb
1967.7
16.4 mm
—
38%
34.1, -95.2
27.7 °C
8.0 °C
997.6 mb
2338.8
15.1 mm
—
Midpoint
33.9, -95.4
29.0 °C
5.3 °C
999.2 mb
2450.1
15.8 mm
—
63%
33.8, -95.7
28.0 °C
6.0 °C
996.7 mb
2353.0
14.9 mm
—
75%
33.6, -95.9
27.2 °C
7.0 °C
994.9 mb
2326.5
14.9 mm
—
88%
33.4, -96.2
28.4 °C
4.9 °C
991.2 mb
2492.0
16.1 mm
—
Destination
33.2, -96.5
27.8 °C
4.1 °C
995.4 mb
2379.9
13.3 mm
—
Midpoint vertical profile
17-hour forecast · this path · 24 GHz
→ steady
Peak 74
at 12:00 UTC
· low 68
at 07:00 UTC
| Hour UTC | Score | Rating |
|---|---|---|
| 20:00 | 73 | GOOD |
| 21:00 | 73 | GOOD |
| 22:00 | 72 | GOOD |
| 23:00 | 72 | GOOD |
| 00:00 | 73 | GOOD |
| 01:00 | 72 | GOOD |
| 02:00 | 69 | GOOD |
| 03:00 | 72 | GOOD |
| 04:00 | 71 | GOOD |
| 05:00 | 69 | GOOD |
| 06:00 | 70 | GOOD |
| 07:00 | 68 | GOOD |
| 08:00 | 73 | GOOD |
| 09:00 | 72 | GOOD |
| 10:00 | 72 | GOOD |
| 11:00 | 73 | GOOD |
| 12:00 · now | 74 | GOOD |