Distance
241.7
km · 150.2 mi
Bearing
94.9°
true · rev 274.9°
Terrain
BLOCKED
137.0 dB diffraction
Propagation
71/100
GOOD
Margin
-94.9
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 ≈ 573 m AGL at the midpoint (1719 m above the chord, 859 m above the 4/3 horizon), so its Fresnel zone (F₁ ≈ 27.5 m) clears with margin. The geometric line of sight is obstructed — buried 857 m below terrain at its worst point.
Great circle
33.333, -99.201 → 33.12, -96.615 · 94.9°
Loss budget · 24 GHz
FSPL (free-space)
167.7
dB
Gaseous (O₂ + H₂O)
8.2
dB
Diffraction
137.0
dB
Rain attenuation
0.0
dB
Total path loss
312.9
dB
Gas rate 0.0338 dB/km · H₂O 0.0020 dB/km/g · O₂ 0.0200 dB/km
Path abs. humidity avg 6.9 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
-312.9
dB
RX antenna gain
30.0
dBi
RX power
-234.9
dBm
Sensitivity (CW, 500 Hz)
-141.0
dBm
Margin
-94.9
dB
Path weather · HRRR average of 9 samples
Temperature
79.7 °F
26.5 °C
Dewpoint
43.3 °F
6.3 °C
T/Td gap
36.3 °F
20.2 °C
Abs. humidity
6.9
g/m³
Pressure
965.2
mb
PWAT
13.3
mm
BL depth
2289.8
m AGL
Refrac. gradient
0
N/km
Propagation factors · 24 GHz
71/100
Rain
100
14%
Humidity
60
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
33.3, -99.2
26.2 °C
5.2 °C
965.2 mb
2258.0
12.6 mm
—
13%
33.3, -98.9
26.9 °C
5.5 °C
974.5 mb
2275.4
13.2 mm
—
25%
33.3, -98.6
26.3 °C
4.7 °C
970.9 mb
2223.1
11.9 mm
—
38%
33.3, -98.2
26.9 °C
5.2 °C
978.1 mb
2228.6
12.2 mm
—
Midpoint
33.2, -97.9
28.3 °C
5.6 °C
985.9 mb
2402.8
15.2 mm
—
63%
33.2, -97.6
26.1 °C
6.5 °C
985.1 mb
2315.1
12.9 mm
—
75%
33.2, -97.3
24.9 °C
9.5 °C
990.9 mb
2182.0
12.8 mm
—
88%
33.1, -96.9
24.4 °C
10.4 °C
997.5 mb
2345.3
15.1 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 76
at 21:00 UTC
· low 64
at 11:00 UTC
| Hour UTC | Score | Rating |
|---|---|---|
| 20:00 | 75 | GOOD |
| 21:00 | 76 | GOOD |
| 22:00 | 76 | GOOD |
| 23:00 | 72 | GOOD |
| 00:00 | 72 | GOOD |
| 01:00 | 69 | GOOD |
| 02:00 | 69 | GOOD |
| 03:00 | 76 | GOOD |
| 04:00 | 73 | GOOD |
| 05:00 | 74 | GOOD |
| 06:00 | 74 | GOOD |
| 07:00 | 73 | GOOD |
| 08:00 | 72 | GOOD |
| 09:00 | 70 | GOOD |
| 10:00 | 72 | GOOD |
| 11:00 | 64 | MARGINAL |
| 12:00 · now | 64 | MARGINAL |