| AT-150/SRC |
|
| Physical
Dimensions |
|
| Height |
17
- 3/8 inches |
| Depth |
3
- 1/4 inches |
| Width |
22
- 5/16 inches |
| Weight |
4.5
lbs |
| Operating
Temperature |
-32
C to +150 C |
|
|
| Frequency
Range |
220
to 400 MHz |
| Input
Impedance |
50
ohms (nominal) |
| VSWR |
>
2:1 |
| Polarization |
Vertical |
| RF
Power Rating |
200
watts (average) |
| Power
Requirement |
None |
| Feed
Type |
Unbalanced |
| Input
Connector |
Type
N, special mates with UG-21B/U |
|
|
Description:
The AT-150/SRC is a broadband coaxial dipole antenna used
for transmitting and receiving. It consists of vertical
radiating elements and a balun arrangement that electrically
balances the antenna to ground. The antenna may be used with
any UHF transmitting or receiving equipment designed to
operate within the frequency range and power handling
limitations of the antenna.
Installation: The antenna must be mounted with
the radiating element in the vertical plane. It is supplied
with a mounting base and clamp that fits around the
horizontal portion of the antenna. This mounting has four
7/16 inch bolt holes on 4 - 1/2 x 3 - 3/4 bolt centers for
attachment to a suitable mounting pad on the ship's mast,
yardarm, or similar structure. These antennas are often
mounted on stub mast above the radar platforms and on the
outboard ends of yardarms.
Considerations: The locations for mounting the
AT-150/SRC Antenna onboard ship should be selected to
provide maximum unobstructed coverage within the physical
constraints of the ship's structure. UHF propagation is
generally line-of-sight: therefore, antennas that are masked
by surrounding structures produce limited coverage in
azimuth and/or elevation. The antenna is designed to be
sufficiently air-tight to maintain a dielectrically stable
atmosphere within the antenna. The presence of moisture may
be detected by the removal of the pipe plug located on the
connector flange. The antenna should not be located in stack
gas drafts or exhausts where the temperatures exceed the
operating temperature limitations. |
