Distance
110.4
km · 68.6 mi
Bearing
312.0°
true · rev 132.0°
Terrain
BLOCKED
109.9 dB diffraction
Propagation
55/100
MARGINAL
Margin
-68.2
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 ≈ 120 m AGL at the midpoint (359 m above the chord, 179 m above the 4/3 horizon), so its Fresnel zone (F₁ ≈ 13.3 m) clears with margin. The geometric line of sight is obstructed — buried 148 m below terrain at its worst point.
Great circle
32.527, -95.57 → 33.189, -96.452 · 312.0°
Loss budget · 47 GHz
FSPL (free-space)
166.7
dB
Gaseous (O₂ + H₂O)
9.5
dB
Diffraction
109.9
dB
Rain attenuation
0.0
dB
Total path loss
286.2
dB
Gas rate 0.0862 dB/km · H₂O 0.0030 dB/km/g · O₂ 0.0400 dB/km
Path abs. humidity avg 15.4 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
-286.2
dB
RX antenna gain
30.0
dBi
RX power
-208.2
dBm
Sensitivity (CW, 500 Hz)
-141.0
dBm
Margin
-68.2
dB
Path weather · HRRR average of 9 samples
Temperature
72.1 °F
22.3 °C
Dewpoint
64.9 °F
18.3 °C
T/Td gap
7.2 °F
4.0 °C
Abs. humidity
15.4
g/m³
Pressure
997.2
mb
PWAT
39.4
mm
BL depth
524.8
m AGL
Refrac. gradient
-108.5
N/km · super-refractive
Propagation factors · 47 GHz
55/100
Rain
100
14%
Humidity
28
13%
PWAT
35
11%
Season
55
11%
T-Td Depression
38
10%
Refractivity
72
10%
Pressure
70
10%
Sky Cover
50
8%
Wind
50
8%
Time of Day
18
4%
Atmospheric profile
HRRR 3 km
Valid 2026-05-10 21:00 UTC
· 9 samples
Point
Lat, lon
Temp
Dewpt
Press
dN/dh
BL m
PWAT
Duct
Source
32.5, -95.6
26.3 °C
19.6 °C
997.3 mb
-70.4
567.3
38.1 mm
—
13%
32.6, -95.7
25.4 °C
19.2 °C
1000.7 mb
-60.5
605.4
38.0 mm
—
25%
32.7, -95.8
24.6 °C
17.7 °C
1002.2 mb
-51.7
535.4
38.6 mm
—
38%
32.8, -95.9
23.6 °C
18.1 °C
999.4 mb
-61.8
501.5
39.7 mm
—
Midpoint
32.9, -96.0
21.5 °C
17.9 °C
1000.6 mb
-108.5
508.4
40.1 mm
—
63%
32.9, -96.1
20.9 °C
18.4 °C
999.9 mb
-82.0
516.6
40.1 mm
—
75%
33.0, -96.2
18.9 °C
17.8 °C
999.4 mb
-53.7
415.5
39.2 mm
—
88%
33.1, -96.3
18.9 °C
17.7 °C
997.6 mb
-63.8
472.8
39.3 mm
—
Destination
33.2, -96.5
20.1 °C
17.9 °C
997.2 mb
-58.9
600.2
41.5 mm
—
Midpoint vertical profile
17-hour forecast · this path · 47 GHz
→ steady
Peak 57
at 11:00 UTC
· low 39
at 04:00 UTC
| Hour UTC | Score | Rating |
|---|---|---|
| 21:00 | 49 | POOR |
| 22:00 | 48 | POOR |
| 23:00 | 49 | POOR |
| 00:00 | 51 | MARGINAL |
| 01:00 | 52 | MARGINAL |
| 02:00 | 52 | MARGINAL |
| 03:00 | 41 | POOR |
| 04:00 | 39 | POOR |
| 05:00 | 54 | MARGINAL |
| 06:00 | 55 | MARGINAL |
| 07:00 | 54 | MARGINAL |
| 08:00 | 55 | MARGINAL |
| 09:00 | 56 | MARGINAL |
| 10:00 | 56 | MARGINAL |
| 11:00 | 57 | MARGINAL |
| 12:00 | 56 | MARGINAL |
| 13:00 · now | 56 | MARGINAL |