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Grid parabolic antennas are constructed with aluminum tube elements that are corrosion-resistant and formed into a parabolic reflector. These grid elements are welded to both an outer rim and aluminum back structure for enhanced electrical performance and mechanical integrity. All grid tubes are manufactured with drain holes to allow condensation and rain to escape. Radio Waves’ grid line of antennas are engineered and constructed to the same strict standards as our ProLine parabolic antennas. Certain pattern specifications, such as front-to-back ratio and crosspolarization, are not as stringent as with solid reflector antennas. However, grid parabolic antennas are good for when tower loading and windloading are a concern. | |
At lower frequencies, below 3 Gigahertz, a parabolic reflector can be simulated by a "grid" of reflective elements. This arrangement greatly reduces wind loading on a tower or other mounting structure. Grid antennas have a lower front-to-back ratio than solid parabolic antennas. They are also limited to a single polarization. They are ideal in applications where the best performance is not required and tower and windloading are the main concern.
Features:
- Antenna diameter: 3' (90 cm)
- Antenna weights: 25 lbs. (11.3 kg)
- Connector Interface: Type “N” female
- Lightweight design, easily installed
- Reduced windloading by 30 - 40% of equivalent size solid parabolics
- Corrosive resistant: materials are of coated aluminum, hot dipped galvanized or stainless steel
Electrical Specifications
|
Frequency,
GHz |
Polarization |
Gain, dBi (nominal) |
Beamwidth
-3dB |
X-Pol.
Rejection, dB |
F/B Ratio
dB |
VSWR, Max (R.L., dB) |
| 2.40 - 2.70 |
Single |
27 |
7.1 |
25 |
30 |
1.5:1 (14.0) |
Dimmensions:
| Diameter |
A |
B |
C |
D |
E |
F |
| 4 ft (120 cm) |
50.5 (128.3) |
13.0 (33.0) |
12.2 (31.0) |
36.0 (91.4) |
7.0 (17.8) |
44.5 (113.0) | |