Distance
170.2
km · 105.7 mi
Bearing
129.0°
true · rev 309.0°
Terrain
BLOCKED
128.0 dB diffraction
Propagation
62/100
MARGINAL
Margin
-82.5
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 ≈ 284 m AGL at the midpoint (852 m above the chord, 426 m above the 4/3 horizon), so its Fresnel zone (F₁ ≈ 23.1 m) clears with margin. The geometric line of sight is obstructed — buried 502 m below terrain at its worst point.
Great circle
34.092, -98.035 → 33.12, -96.615 · 129.0°
Loss budget · 24 GHz
FSPL (free-space)
164.7
dB
Gaseous (O₂ + H₂O)
7.9
dB
Diffraction
128.0
dB
Rain attenuation
0.0
dB
Total path loss
300.5
dB
Gas rate 0.0465 dB/km · H₂O 0.0020 dB/km/g · O₂ 0.0200 dB/km
Path abs. humidity avg 13.3 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
-300.5
dB
RX antenna gain
30.0
dBi
RX power
-222.5
dBm
Sensitivity (CW, 500 Hz)
-141.0
dBm
Margin
-82.5
dB
Path weather · HRRR average of 9 samples
Temperature
73.8 °F
23.2 °C
Dewpoint
60.7 °F
16.0 °C
T/Td gap
13.1 °F
7.3 °C
Abs. humidity
13.3
g/m³
Pressure
974.1
mb
PWAT
26.2
mm
BL depth
304.3
m AGL
Refrac. gradient
-96.0
N/km
Propagation factors · 24 GHz
62/100
Rain
100
14%
Humidity
4
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
34.1, -98.0
23.6 °C
13.3 °C
976.5 mb
-93.2
307.6
26.3 mm
—
13%
34.0, -97.9
22.4 °C
15.8 °C
976.1 mb
-96.0
307.7
27.9 mm
—
25%
33.8, -97.7
23.3 °C
17.0 °C
976.6 mb
-92.6
312.9
29.4 mm
—
38%
33.7, -97.5
23.2 °C
16.5 °C
975.0 mb
-94.3
307.8
29.0 mm
—
Midpoint
33.6, -97.3
22.7 °C
17.4 °C
974.1 mb
-95.8
331.8
28.3 mm
—
63%
33.5, -97.1
23.0 °C
17.1 °C
985.5 mb
-82.0
349.0
26.9 mm
—
75%
33.4, -97.0
22.5 °C
15.6 °C
985.0 mb
-83.2
272.8
23.9 mm
—
88%
33.2, -96.8
24.1 °C
14.8 °C
985.1 mb
-64.2
282.1
21.9 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 65
at 12:00 UTC
· low 52
at 22:00 UTC
| Hour UTC | Score | Rating |
|---|---|---|
| 08:00 | 63 | MARGINAL |
| 09:00 | 60 | MARGINAL |
| 10:00 | 62 | MARGINAL |
| 11:00 | 62 | MARGINAL |
| 12:00 | 65 | GOOD |
| 13:00 | 61 | MARGINAL |
| 14:00 | 61 | MARGINAL |
| 15:00 | 57 | MARGINAL |
| 16:00 | 61 | MARGINAL |
| 17:00 | 57 | MARGINAL |
| 18:00 | 60 | MARGINAL |
| 19:00 | 63 | MARGINAL |
| 20:00 | 58 | MARGINAL |
| 21:00 | 55 | MARGINAL |
| 22:00 | 52 | MARGINAL |
| 23:00 | 54 | MARGINAL |
| 00:00 | 54 | MARGINAL |
| 01:00 · now | 54 | MARGINAL |