Distance
149.8
km · 93.1 mi
Bearing
136.6°
true · rev 316.6°
Terrain
BLOCKED
120.4 dB diffraction
Propagation
70/100
GOOD
Margin
-71.0
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 ≈ 220 m AGL at the midpoint (660 m above the chord, 330 m above the 4/3 horizon), so its Fresnel zone (F₁ ≈ 21.6 m) clears with margin. The geometric line of sight is obstructed — buried 356 m below terrain at its worst point.
Great circle
34.173, -97.557 → 33.189, -96.452 · 136.6°
Loss budget · 24 GHz
FSPL (free-space)
163.6
dB
Gaseous (O₂ + H₂O)
5.1
dB
Diffraction
120.4
dB
Rain attenuation
0.0
dB
Total path loss
289.0
dB
Gas rate 0.0338 dB/km · H₂O 0.0020 dB/km/g · O₂ 0.0200 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
-289.0
dB
RX antenna gain
30.0
dBi
RX power
-211.0
dBm
Sensitivity (CW, 500 Hz)
-141.0
dBm
Margin
-71.0
dB
Path weather · HRRR average of 9 samples
Temperature
81.1 °F
27.3 °C
Dewpoint
43.3 °F
6.3 °C
T/Td gap
37.8 °F
21.0 °C
Abs. humidity
6.9
g/m³
Pressure
980.3
mb
PWAT
13.7
mm
BL depth
2278.0
m AGL
Refrac. gradient
0
N/km
Propagation factors · 24 GHz
70/100
Rain
100
14%
Humidity
60
13%
PWAT
80
11%
Season
47
11%
T-Td Depression
96
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
34.2, -97.6
26.8 °C
5.9 °C
980.3 mb
2272.1
11.7 mm
—
13%
34.0, -97.4
27.3 °C
8.2 °C
985.8 mb
2389.9
16.8 mm
—
25%
33.9, -97.3
27.4 °C
9.0 °C
985.2 mb
2287.7
16.2 mm
—
38%
33.8, -97.1
27.7 °C
7.1 °C
990.2 mb
2281.7
14.4 mm
—
Midpoint
33.7, -97.0
26.8 °C
6.2 °C
989.8 mb
2157.8
12.2 mm
—
63%
33.6, -96.9
27.3 °C
5.4 °C
992.6 mb
2120.7
11.8 mm
—
75%
33.4, -96.7
26.8 °C
5.1 °C
990.1 mb
2214.9
12.3 mm
—
88%
33.3, -96.6
27.8 °C
5.4 °C
994.2 mb
2397.3
14.6 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 · 24 GHz
→ steady
Peak 75
at 07:00 UTC
· low 66
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 | 73 | GOOD |
| 01:00 | 72 | GOOD |
| 02:00 | 73 | GOOD |
| 03:00 | 74 | GOOD |
| 04:00 | 74 | GOOD |
| 05:00 | 74 | GOOD |
| 06:00 | 74 | GOOD |
| 07:00 | 75 | GOOD |
| 08:00 | 73 | GOOD |
| 09:00 | 73 | GOOD |
| 10:00 | 74 | GOOD |
| 11:00 | 74 | GOOD |
| 12:00 · now | 66 | GOOD |