Distance
214.4
km · 133.2 mi
Bearing
115.5°
true · rev 295.5°
Terrain
BLOCKED
123.6 dB diffraction
Propagation
68/100
GOOD
Margin
-66.1
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 ≈ 451 m AGL at the midpoint (1353 m above the chord, 676 m above the 4/3 horizon), so its Fresnel zone (F₁ ≈ 40.1 m) clears with margin. The geometric line of sight is obstructed — buried 743 m below terrain at its worst point.
Great circle
33.966, -98.694 → 33.12, -96.615 · 115.5°
Loss budget · 10 GHz
FSPL (free-space)
159.1
dB
Gaseous (O₂ + H₂O)
1.5
dB
Diffraction
123.6
dB
Rain attenuation
0.0
dB
Total path loss
284.1
dB
Gas rate 0.0070 dB/km · H₂O 0.0000 dB/km/g · O₂ 0.0070 dB/km
Path abs. humidity avg 6.9 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
-284.1
dB
RX antenna gain
30.0
dBi
RX power
-206.1
dBm
Sensitivity (CW, 500 Hz)
-141.0
dBm
Margin
-66.1
dB
Path weather · HRRR average of 9 samples
Temperature
80.5 °F
27.0 °C
Dewpoint
43.2 °F
6.2 °C
T/Td gap
37.3 °F
20.7 °C
Abs. humidity
6.9
g/m³
Pressure
977.6
mb
PWAT
14.0
mm
BL depth
2293.3
m AGL
Refrac. gradient
0
N/km
Propagation factors · 10 GHz
68/100
Rain
100
14%
Humidity
70
13%
PWAT
75
11%
Season
68
11%
T-Td Depression
55
10%
Refractivity
50
10%
Pressure
88
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
34.0, -98.7
27.9 °C
4.0 °C
977.6 mb
2329.7
12.2 mm
—
13%
33.9, -98.4
27.7 °C
4.5 °C
980.7 mb
2319.0
12.5 mm
—
25%
33.8, -98.2
27.2 °C
4.5 °C
982.8 mb
2334.2
12.2 mm
—
38%
33.6, -97.9
26.4 °C
5.1 °C
979.0 mb
2249.9
12.3 mm
—
Midpoint
33.5, -97.7
25.4 °C
8.8 °C
982.0 mb
2240.3
15.2 mm
—
63%
33.4, -97.4
24.7 °C
9.8 °C
983.6 mb
2071.5
15.0 mm
—
75%
33.3, -97.1
27.3 °C
7.0 °C
993.0 mb
2235.5
14.1 mm
—
88%
33.2, -96.9
27.7 °C
6.0 °C
995.5 mb
2360.1
15.5 mm
—
Destination
33.1, -96.6
28.4 °C
6.3 °C
993.9 mb
2499.5
17.5 mm
—
Midpoint vertical profile
18-hour forecast · this path · 10 GHz
→ steady
Peak 83
at 03:00 UTC
· low 74
at 11:00 UTC
| Hour UTC | Score | Rating |
|---|---|---|
| 20:00 | 75 | GOOD |
| 21:00 | 77 | GOOD |
| 22:00 | 77 | GOOD |
| 23:00 | 77 | GOOD |
| 00:00 | 80 | EXCELLENT |
| 01:00 | 76 | GOOD |
| 02:00 | 76 | GOOD |
| 03:00 | 83 | EXCELLENT |
| 04:00 | 81 | EXCELLENT |
| 05:00 | 82 | EXCELLENT |
| 06:00 | 82 | EXCELLENT |
| 07:00 | 82 | EXCELLENT |
| 08:00 | 82 | EXCELLENT |
| 09:00 | 81 | EXCELLENT |
| 10:00 | 82 | EXCELLENT |
| 11:00 | 74 | GOOD |
| 12:00 | 76 | GOOD |
| 13:00 · now | 76 | GOOD |