| AS-726/GRC |
|
| Physical
Dimensions |
|
| Height |
174
inches |
| Diameter |
14
- 3/8 inches |
| Weight |
200
lbs |
| Operating
Temperature |
Unavailable |
|
|
| Frequency
Range |
225
to 400 MHz |
| Input
Impedance |
50
ohms |
| VSWR |
>
1.8:1 |
| Polarization |
Vertical |
| RF
Power Rating |
20
kilowatts (average) |
| Power
Requirement |
None |
| Feed
Type |
Unavailable |
| Input
Connector |
6
- 1/8 inch EIA flange |
|
|
Description:
The AS-726/GRC is a dipole array which provides broadband,
omnidirectional coverage for general purpose communications
use in the 225-400 MHz frequency band. It has a minimum gain
of 7 - 1/2 dBi. It is intended for use in ground
installations where very high RF power levels and moderate
antenna gains are required.
The antenna is a
parallel-fed, colinear array of four radiating elements
enclosed and sealed within an epoxy fiberglass radome for
prolonged, trouble-free use under severe environmental
conditions. It will withstand sustained winds to 150 mph.
The array handles average
input powers to 20 kW. It is untuned and operates over its
entire frequency range with a VSWR, on 50 ohms, of less than
1.8: 1. Maximum signal intensity is directed near the
horizon, with a nominal 5° uptilt to minimize the
effects of ground reflections. The half-power beamwidth over
the design band is 10° - 18°. Azimuth coverage is
omnidirectional to within +/-1 dB.
The RF input connector is
a 6 - 1/8 inch EIA flange protruding from the bottom of the
base flange. Provision is made for pressurizing the radome
from the transmission line. A pressure purging connector is
installed in the base.
Dual aircraft obstruction
lights are mounted atop the antenna, energized from a 110 V
AC connector in the base. |
