Distance
56.0
km · 34.8 mi
Bearing
296.1°
true · rev 116.1°
Terrain
BLOCKED
75.5 dB diffraction
Propagation
67/100
GOOD
Margin
-5.3
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 ≈ 31 m AGL at the midpoint (92 m above the chord, 46 m above the 4/3 horizon), so its Fresnel zone (F₁ ≈ 20.5 m) clears with margin. The geometric line of sight is obstructed — buried 55 m below terrain at its worst point.
Great circle
32.968, -95.912 → 33.189, -96.452 · 296.1°
Loss budget · 10 GHz
FSPL (free-space)
147.4
dB
Gaseous (O₂ + H₂O)
0.4
dB
Diffraction
75.5
dB
Rain attenuation
0.0
dB
Total path loss
223.3
dB
Gas rate 0.0070 dB/km · H₂O 0.0000 dB/km/g · O₂ 0.0070 dB/km
Path abs. humidity avg 7.1 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
-223.3
dB
RX antenna gain
30.0
dBi
RX power
-145.3
dBm
Sensitivity (CW, 500 Hz)
-141.0
dBm
Margin
-5.3
dB
Path weather · HRRR average of 9 samples
Temperature
80.7 °F
27.1 °C
Dewpoint
44.1 °F
6.7 °C
T/Td gap
36.5 °F
20.3 °C
Abs. humidity
7.1
g/m³
Pressure
995.4
mb
PWAT
14.6
mm
BL depth
2288.0
m AGL
Refrac. gradient
0
N/km
Propagation factors · 10 GHz
67/100
Rain
100
14%
Humidity
82
13%
PWAT
75
11%
Season
68
11%
T-Td Depression
55
10%
Refractivity
50
10%
Pressure
70
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
33.0, -95.9
27.1 °C
5.5 °C
999.0 mb
2281.0
13.4 mm
—
13%
33.0, -96.0
28.5 °C
5.6 °C
999.9 mb
2417.2
16.1 mm
—
25%
33.0, -96.0
28.5 °C
5.6 °C
999.9 mb
2417.2
16.1 mm
—
38%
33.1, -96.1
27.2 °C
6.9 °C
999.7 mb
2301.7
14.8 mm
—
Midpoint
33.1, -96.2
26.7 °C
7.1 °C
997.2 mb
2182.9
13.7 mm
—
63%
33.1, -96.2
26.3 °C
7.7 °C
996.2 mb
2198.8
13.8 mm
—
75%
33.1, -96.3
25.7 °C
9.1 °C
996.9 mb
2206.6
14.9 mm
—
88%
33.2, -96.4
25.7 °C
9.1 °C
996.9 mb
2206.6
14.9 mm
—
Destination
33.2, -96.5
27.8 °C
4.1 °C
995.4 mb
2379.9
13.3 mm
—
Midpoint vertical profile
17-hour forecast · this path · 10 GHz
→ steady
Peak 82
at 05:00 UTC
· low 71
at 12:00 UTC
| Hour UTC | Score | Rating |
|---|---|---|
| 20:00 | 73 | GOOD |
| 21:00 | 73 | GOOD |
| 22:00 | 72 | GOOD |
| 23:00 | 72 | GOOD |
| 00:00 | 75 | GOOD |
| 01:00 | 75 | GOOD |
| 02:00 | 77 | GOOD |
| 03:00 | 79 | GOOD |
| 04:00 | 79 | GOOD |
| 05:00 | 82 | EXCELLENT |
| 06:00 | 82 | EXCELLENT |
| 07:00 | 82 | EXCELLENT |
| 08:00 | 82 | EXCELLENT |
| 09:00 | 80 | EXCELLENT |
| 10:00 | 81 | EXCELLENT |
| 11:00 | 80 | EXCELLENT |
| 12:00 · now | 71 | GOOD |