Distance
148.6
km · 92.3 mi
Bearing
160.6°
true · rev 340.6°
Terrain
BLOCKED
112.7 dB diffraction
Propagation
61/100
MARGINAL
Margin
-65.2
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 ≈ 217 m AGL at the midpoint (650 m above the chord, 325 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 261 m below terrain at its worst point.
Great circle
34.382, -97.145 → 33.12, -96.615 · 160.6°
Loss budget · 24 GHz
FSPL (free-space)
163.5
dB
Gaseous (O₂ + H₂O)
7.1
dB
Diffraction
112.7
dB
Rain attenuation
0.0
dB
Total path loss
283.2
dB
Gas rate 0.0476 dB/km · H₂O 0.0020 dB/km/g · O₂ 0.0200 dB/km
Path abs. humidity avg 13.8 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
-283.2
dB
RX antenna gain
30.0
dBi
RX power
-205.2
dBm
Sensitivity (CW, 500 Hz)
-141.0
dBm
Margin
-65.2
dB
Path weather · HRRR average of 9 samples
Temperature
73.9 °F
23.3 °C
Dewpoint
61.9 °F
16.6 °C
T/Td gap
12.0 °F
6.7 °C
Abs. humidity
13.8
g/m³
Pressure
966.0
mb
PWAT
26.3
mm
BL depth
325.2
m AGL
Refrac. gradient
-91.6
N/km
Propagation factors · 24 GHz
61/100
Rain
100
14%
Humidity
2
13%
PWAT
60
11%
Season
47
11%
T-Td Depression
60
10%
Refractivity
62
10%
Pressure
88
10%
Sky Cover
50
8%
Wind
50
8%
Time of Day
55
4%
Atmospheric profile
HRRR 3 km
Valid 2026-05-15 08:00 UTC
· 9 samples
Point
Lat, lon
Temp
Dewpt
Press
dN/dh
BL m
PWAT
Duct
Source
34.4, -97.1
22.2 °C
17.0 °C
966.0 mb
-88.7
326.3
28.8 mm
—
13%
34.2, -97.1
23.0 °C
17.1 °C
979.8 mb
-69.5
338.9
30.2 mm
—
25%
34.1, -97.0
23.9 °C
17.3 °C
978.4 mb
-67.2
363.8
29.7 mm
—
38%
33.9, -96.9
22.7 °C
17.9 °C
984.5 mb
-76.9
337.1
29.3 mm
—
Midpoint
33.8, -96.9
23.2 °C
17.1 °C
983.2 mb
-89.2
352.3
26.9 mm
—
63%
33.6, -96.8
23.5 °C
16.0 °C
981.8 mb
-88.1
355.1
25.3 mm
—
75%
33.4, -96.7
23.3 °C
15.5 °C
983.0 mb
-87.6
317.3
22.9 mm
—
88%
33.3, -96.7
23.7 °C
15.6 °C
987.5 mb
-91.6
269.3
22.0 mm
—
Destination
33.1, -96.6
24.1 °C
16.0 °C
987.4 mb
-91.5
266.6
22.0 mm
—
Midpoint vertical profile
18-hour forecast · this path · 24 GHz
→ steady
Peak 64
at 10:00 UTC
· low 51
at 01:00 UTC
| Hour UTC | Score | Rating |
|---|---|---|
| 08:00 | 63 | MARGINAL |
| 09:00 | 60 | MARGINAL |
| 10:00 | 64 | MARGINAL |
| 11:00 | 57 | MARGINAL |
| 12:00 | 59 | MARGINAL |
| 13:00 | 60 | MARGINAL |
| 14:00 | 60 | MARGINAL |
| 15:00 | 59 | MARGINAL |
| 16:00 | 56 | MARGINAL |
| 17:00 | 59 | MARGINAL |
| 18:00 | 60 | MARGINAL |
| 19:00 | 62 | MARGINAL |
| 20:00 | 63 | MARGINAL |
| 21:00 | 60 | MARGINAL |
| 22:00 | 54 | MARGINAL |
| 23:00 | 56 | MARGINAL |
| 00:00 | 52 | MARGINAL |
| 01:00 · now | 51 | MARGINAL |