| OE-214/U |
|
| Physical
Dimensions |
Antennas
(AS-4014/U) |
| Height |
423
- 1/4 inches |
| Width |
11
inches at base, tapering |
| Depth |
11
inches at base, tapering |
| Weight |
174
lbs (each antenna) |
|
Matching
Network |
| Height |
21
- 3/16 inches |
| Width |
30
- 3/8 inches |
| Depth |
39
- 1/2 inches |
| Weight |
138
lbs |
| Operating
Temperature |
Unavailable |
| Wind |
Unavailable |
|
|
| Frequency
Range |
4
to 12 MHz
|
| Input
Impedance |
50
ohms |
| VSWR |
>
3:1 |
| Polarization |
Vertical |
| RF
Power Rating |
10
kilowatts (average) |
| Gain |
Unavailable |
| Feed
Type |
Unavailable |
| Input
Connector |
3
- 1/8 inch EIA flange |
|
|
Description:
Twin-whip antenna assembly which provides high-power,
broadband coverage for military communications equipment in
the 4-12 MHz frequency band. It is omnidirectional,
vertically polarized, and is particularly suited for
prolonged use in marine shipboard environments.
The assembly consists of
two 35 foot whip antennas, AS-4014/U; an impedance matching
network, CU-2151/U; and an interconnecting wire-rope feed
assembly. Each whip has a 3-section aluminum radiator, a
fiberglass base insulator and a mounting base. The radiator
is square in cross section and tapers from 11 inches at the
base to 1 inch at the top. CRES shot containers at the top
and within each radiator effectively damp natural vibrations
of the structure at frequencies encountered aboard Navy
vessels.
The two whips mount
vertically, 10 feet apart, atop a platform provided by the
installing activity. The matching network, enclosed in a
weatherproof aluminum housing, mounts beneath the platform
surface midway between the antennas. Each whip connects to
the network feed insulator using the wire-rope feed
assembly. Coaxial connection to the associated
communications equipment is made by means of a 31/8 inch EIA
flange at the network box.
The antenna assembly was
designed for installation on DD-963 Class destroyers. On
these ships the assembly is located on a platform on the
side of the aft stack. Fixed-tuned, inductor/capacitor
matching elements are provided in the network box to
optimize its VSWR characteristics over the 4-12 MHz band. A
VSWR of 3:1 or less, on 50 ohms, is maintained over the
entire band. For other mounting sites these characteristics
will vary and other network values or electrical
configurations can be supplied to meet the installer's
requirements. |
