Distance
58.6
km · 36.4 mi
Bearing
265.4°
true · rev 85.4°
Terrain
BLOCKED
68.1 dB diffraction
Propagation
65/100
GOOD
Margin
+1.7
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 ≈ 34 m AGL at the midpoint (101 m above the chord, 50 m above the 4/3 horizon), so its Fresnel zone (F₁ ≈ 21.0 m) clears with margin. The geometric line of sight is obstructed — buried 52 m below terrain at its worst point.
Great circle
33.164, -95.989 → 33.12, -96.615 · 265.4°
Loss budget · 10 GHz
FSPL (free-space)
147.8
dB
Gaseous (O₂ + H₂O)
0.4
dB
Diffraction
68.1
dB
Rain attenuation
0.0
dB
Total path loss
216.3
dB
Gas rate 0.0070 dB/km · H₂O 0.0000 dB/km/g · O₂ 0.0070 dB/km
Path abs. humidity avg 15.1 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
-216.3
dB
RX antenna gain
30.0
dBi
RX power
-138.3
dBm
Sensitivity (CW, 500 Hz)
-141.0
dBm
Margin
1.7
dB
Path weather · HRRR average of 9 samples
Temperature
66.6 °F
19.2 °C
Dewpoint
63.9 °F
17.7 °C
T/Td gap
2.6 °F
1.5 °C
Abs. humidity
15.1
g/m³
Pressure
995.0
mb
PWAT
40.5
mm
BL depth
473.7
m AGL
Refrac. gradient
-71.9
N/km
Propagation factors · 10 GHz
65/100
Rain
100
14%
Humidity
95
13%
PWAT
50
11%
Season
68
11%
T-Td Depression
40
10%
Refractivity
55
10%
Pressure
70
10%
Sky Cover
50
8%
Wind
50
8%
Time of Day
18
4%
Atmospheric profile
HRRR 3 km
Valid 2026-05-10 21:00 UTC
· 9 samples
Point
Lat, lon
Temp
Dewpt
Press
dN/dh
BL m
PWAT
Duct
Source
33.2, -96.0
20.1 °C
17.9 °C
997.4 mb
-71.9
586.8
39.7 mm
—
13%
33.2, -96.1
19.9 °C
18.0 °C
998.6 mb
-64.6
593.3
42.0 mm
—
25%
33.2, -96.1
19.9 °C
18.0 °C
998.6 mb
-64.6
593.3
42.0 mm
—
38%
33.1, -96.2
18.4 °C
17.4 °C
996.8 mb
-69.8
348.7
39.6 mm
—
Midpoint
33.1, -96.3
18.4 °C
17.4 °C
996.8 mb
-69.8
348.7
39.6 mm
—
63%
33.1, -96.4
18.9 °C
17.7 °C
997.6 mb
-63.8
472.8
39.3 mm
—
75%
33.1, -96.5
18.9 °C
17.8 °C
998.4 mb
-65.0
431.7
40.8 mm
—
88%
33.1, -96.5
18.9 °C
17.8 °C
998.4 mb
-65.0
431.7
40.8 mm
—
Destination
33.1, -96.6
19.4 °C
17.8 °C
995.0 mb
-62.2
456.2
40.3 mm
—
Midpoint vertical profile
17-hour forecast · this path · 10 GHz
→ steady
Peak 74
at 13:00 UTC
· low 62
at 21:00 UTC
| Hour UTC | Score | Rating |
|---|---|---|
| 21:00 | 62 | MARGINAL |
| 22:00 | 65 | GOOD |
| 23:00 | 69 | GOOD |
| 00:00 | 63 | MARGINAL |
| 01:00 | 66 | GOOD |
| 02:00 | 62 | MARGINAL |
| 03:00 | 64 | MARGINAL |
| 04:00 | 70 | GOOD |
| 05:00 | 68 | GOOD |
| 06:00 | 68 | GOOD |
| 07:00 | 69 | GOOD |
| 08:00 | 67 | GOOD |
| 09:00 | 68 | GOOD |
| 10:00 | 73 | GOOD |
| 11:00 | 73 | GOOD |
| 12:00 | 73 | GOOD |
| 13:00 · now | 74 | GOOD |