Distance
98.6
km · 61.2 mi
Bearing
161.0°
true · rev 341.0°
Terrain
BLOCKED
96.1 dB diffraction
Propagation
73/100
GOOD
Margin
-31.1
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 ≈ 95 m AGL at the midpoint (286 m above the chord, 143 m above the 4/3 horizon), so its Fresnel zone (F₁ ≈ 27.2 m) clears with margin. The geometric line of sight is obstructed — buried 179 m below terrain at its worst point.
Great circle
34.027, -96.797 → 33.189, -96.452 · 161.0°
Loss budget · 10 GHz
FSPL (free-space)
152.3
dB
Gaseous (O₂ + H₂O)
0.7
dB
Diffraction
96.1
dB
Rain attenuation
0.0
dB
Total path loss
249.1
dB
Gas rate 0.0070 dB/km · H₂O 0.0000 dB/km/g · O₂ 0.0070 dB/km
Path abs. humidity avg 14.8 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
-249.1
dB
RX antenna gain
30.0
dBi
RX power
-171.1
dBm
Sensitivity (CW, 500 Hz)
-141.0
dBm
Margin
-31.1
dB
Path weather · HRRR average of 9 samples
Temperature
68.2 °F
20.1 °C
Dewpoint
63.5 °F
17.5 °C
T/Td gap
4.7 °F
2.6 °C
Abs. humidity
14.8
g/m³
Pressure
989.4
mb
PWAT
38.5
mm
BL depth
627.1
m AGL
Refrac. gradient
-78.0
N/km
Propagation factors · 10 GHz
73/100
Rain
100
14%
Humidity
95
13%
PWAT
70
11%
Season
68
11%
T-Td Depression
75
10%
Refractivity
68
10%
Pressure
82
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
34.0, -96.8
19.1 °C
16.8 °C
990.5 mb
-78.0
577.5
34.7 mm
—
13%
33.9, -96.8
20.1 °C
17.3 °C
992.2 mb
-68.7
593.2
34.7 mm
—
25%
33.8, -96.7
20.1 °C
17.3 °C
992.2 mb
-68.7
593.2
34.7 mm
—
38%
33.7, -96.7
20.5 °C
17.4 °C
989.7 mb
-70.7
705.4
37.1 mm
—
Midpoint
33.6, -96.6
20.1 °C
17.4 °C
992.2 mb
-65.2
624.0
37.8 mm
—
63%
33.5, -96.6
20.3 °C
17.6 °C
989.4 mb
-62.7
611.2
41.1 mm
—
75%
33.4, -96.5
20.7 °C
17.8 °C
995.8 mb
-56.6
738.5
43.3 mm
—
88%
33.3, -96.5
20.1 °C
17.9 °C
997.2 mb
-58.9
600.2
41.5 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 · 10 GHz
→ steady
Peak 75
at 10:00 UTC
· low 66
at 02:00 UTC
| Hour UTC | Score | Rating |
|---|---|---|
| 21:00 | 69 | GOOD |
| 22:00 | 69 | GOOD |
| 23:00 | 69 | GOOD |
| 00:00 | 68 | GOOD |
| 01:00 | 71 | GOOD |
| 02:00 | 66 | GOOD |
| 03:00 | 68 | GOOD |
| 04:00 | 68 | GOOD |
| 05:00 | 68 | GOOD |
| 06:00 | 74 | GOOD |
| 07:00 | 74 | GOOD |
| 08:00 | 74 | GOOD |
| 09:00 | 74 | GOOD |
| 10:00 | 75 | GOOD |
| 11:00 | 75 | GOOD |
| 12:00 | 75 | GOOD |
| 13:00 · now | 75 | GOOD |