Distance
82.3
km · 51.1 mi
Bearing
229.8°
true · rev 49.8°
Terrain
BLOCKED
97.7 dB diffraction
Propagation
62/100
MARGINAL
Margin
-42.1
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 ≈ 66 m AGL at the midpoint (199 m above the chord, 100 m above the 4/3 horizon), so its Fresnel zone (F₁ ≈ 16.0 m) clears with margin. The geometric line of sight is obstructed — buried 116 m below terrain at its worst point.
Great circle
33.6, -95.94 → 33.12, -96.615 · 229.8°
Loss budget · 24 GHz
FSPL (free-space)
158.4
dB
Gaseous (O₂ + H₂O)
4.0
dB
Diffraction
97.7
dB
Rain attenuation
0.0
dB
Total path loss
260.1
dB
Gas rate 0.0490 dB/km · H₂O 0.0020 dB/km/g · O₂ 0.0200 dB/km
Path abs. humidity avg 14.4 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
-260.1
dB
RX antenna gain
30.0
dBi
RX power
-182.1
dBm
Sensitivity (CW, 500 Hz)
-141.0
dBm
Margin
-42.1
dB
Path weather · HRRR average of 9 samples
Temperature
72.3 °F
22.4 °C
Dewpoint
63.0 °F
17.2 °C
T/Td gap
9.3 °F
5.2 °C
Abs. humidity
14.4
g/m³
Pressure
985.4
mb
PWAT
22.4
mm
BL depth
247.2
m AGL
Refrac. gradient
-148.6
N/km · super-refractive
Propagation factors · 24 GHz
62/100
Rain
100
14%
Humidity
0
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
33.6, -95.9
21.1 °C
17.6 °C
989.1 mb
-92.1
242.9
23.3 mm
—
13%
33.5, -96.0
21.7 °C
17.2 °C
988.6 mb
-108.4
265.2
24.3 mm
—
25%
33.5, -96.1
22.7 °C
17.5 °C
985.4 mb
-103.3
247.9
22.8 mm
—
38%
33.4, -96.2
22.1 °C
17.6 °C
985.5 mb
-148.6
250.6
21.7 mm
—
Midpoint
33.4, -96.3
22.1 °C
17.6 °C
985.5 mb
-148.6
250.6
21.7 mm
—
63%
33.3, -96.4
22.6 °C
17.1 °C
991.2 mb
-122.6
233.9
21.8 mm
—
75%
33.2, -96.4
22.9 °C
17.0 °C
988.8 mb
-123.5
237.3
21.9 mm
—
88%
33.2, -96.5
22.2 °C
17.6 °C
991.0 mb
-120.9
229.6
22.7 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 65
at 08:00 UTC
· low 58
at 00:00 UTC
| Hour UTC | Score | Rating |
|---|---|---|
| 08:00 | 65 | GOOD |
| 09:00 | 61 | MARGINAL |
| 10:00 | 61 | MARGINAL |
| 11:00 | 62 | MARGINAL |
| 12:00 | 62 | MARGINAL |
| 13:00 | 63 | MARGINAL |
| 14:00 | 62 | MARGINAL |
| 15:00 | 61 | MARGINAL |
| 16:00 | 59 | MARGINAL |
| 17:00 | 60 | MARGINAL |
| 18:00 | 61 | MARGINAL |
| 19:00 | 65 | GOOD |
| 20:00 | 63 | MARGINAL |
| 21:00 | 64 | MARGINAL |
| 22:00 | 60 | MARGINAL |
| 23:00 | 62 | MARGINAL |
| 00:00 | 58 | MARGINAL |
| 01:00 · now | 61 | MARGINAL |