Distance
35.6
km · 22.1 mi
Bearing
152.7°
true · rev 332.7°
Terrain
BLOCKED
52.5 dB diffraction
Propagation
67/100
GOOD
Margin
+21.7
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 ≈ 12 m AGL at the midpoint (37 m above the chord, 19 m above the 4/3 horizon), so its Fresnel zone (F₁ ≈ 16.3 m) clears with margin. The geometric line of sight is obstructed — buried 20 m below terrain at its worst point.
Great circle
33.474, -96.627 → 33.189, -96.452 · 152.7°
Loss budget · 10 GHz
FSPL (free-space)
143.5
dB
Gaseous (O₂ + H₂O)
0.3
dB
Diffraction
52.5
dB
Rain attenuation
0.0
dB
Total path loss
196.3
dB
Gas rate 0.0070 dB/km · H₂O 0.0000 dB/km/g · O₂ 0.0070 dB/km
Path abs. humidity avg 6.4 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
-196.3
dB
RX antenna gain
30.0
dBi
RX power
-118.3
dBm
Sensitivity (CW, 500 Hz)
-141.0
dBm
Margin
21.7
dB
Path weather · HRRR average of 9 samples
Temperature
81.6 °F
27.5 °C
Dewpoint
41.5 °F
5.3 °C
T/Td gap
40.1 °F
22.3 °C
Abs. humidity
6.4
g/m³
Pressure
987.4
mb
PWAT
14.3
mm
BL depth
2286.2
m AGL
Refrac. gradient
0
N/km
Propagation factors · 10 GHz
67/100
Rain
100
14%
Humidity
70
13%
PWAT
75
11%
Season
68
11%
T-Td Depression
55
10%
Refractivity
50
10%
Pressure
82
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
33.5, -96.6
27.3 °C
6.0 °C
987.4 mb
2252.5
15.0 mm
—
13%
33.4, -96.6
27.3 °C
6.0 °C
987.4 mb
2252.5
15.0 mm
—
25%
33.4, -96.6
27.9 °C
4.9 °C
993.0 mb
2275.5
14.2 mm
—
38%
33.4, -96.6
27.5 °C
5.7 °C
993.7 mb
2316.3
14.8 mm
—
Midpoint
33.3, -96.5
27.5 °C
5.7 °C
993.7 mb
2316.3
14.8 mm
—
63%
33.3, -96.5
27.6 °C
4.8 °C
995.4 mb
2290.7
13.7 mm
—
75%
33.3, -96.5
27.6 °C
4.8 °C
995.4 mb
2290.7
13.7 mm
—
88%
33.2, -96.5
27.6 °C
4.8 °C
995.4 mb
2290.7
13.7 mm
—
Destination
33.2, -96.5
27.6 °C
4.8 °C
995.4 mb
2290.7
13.7 mm
—
Midpoint vertical profile
18-hour forecast · this path · 10 GHz
→ steady
Peak 81
at 10:00 UTC
· low 71
at 21:00 UTC
| Hour UTC | Score | Rating |
|---|---|---|
| 20:00 | 74 | GOOD |
| 21:00 | 71 | GOOD |
| 22:00 | 71 | GOOD |
| 23:00 | 72 | GOOD |
| 00:00 | 74 | GOOD |
| 01:00 | 74 | GOOD |
| 02:00 | 76 | GOOD |
| 03:00 | 77 | GOOD |
| 04:00 | 76 | GOOD |
| 05:00 | 79 | GOOD |
| 06:00 | 79 | GOOD |
| 07:00 | 80 | EXCELLENT |
| 08:00 | 80 | EXCELLENT |
| 09:00 | 80 | EXCELLENT |
| 10:00 | 81 | EXCELLENT |
| 11:00 | 81 | EXCELLENT |
| 12:00 | 74 | GOOD |
| 13:00 · now | 73 | GOOD |