| AS-2537/SR |
|
| Physical
Dimensions |
|
| Height |
438
inches |
| Diameter |
12
inches |
| Weight |
130
lbs |
| Operating
Temperature |
-28
C to +150 C |
|
|
| Frequency
Range |
Receive:
14 to 32 MHz
Transmit: 30kHz
to 32 kHz |
| Input
Impedance |
50
ohms |
| VSWR |
In
a 50 ohm system the VSWR may vary from 2000:1 at 2
MHz to 1:1 near the antenna quarter wave frequency.
The ship's structure in the vicinity of the antenna
will influence both the impedance and radiation
pattern. |
| Polarization |
Vertical
when mounted on a true ground plane. Elliptical,
depending on type of mounting, frequency and
direction in the vertical and horizontal when
mounted onboard ship. |
| RF
Power Rating |
5
kilowatts (average) |
| Power
Requirement |
None |
| Feed
Type |
Unbalanced |
| Input
Connector |
3/8
- 16 x 1 - 1/8 inch bolt |
|
|
Description:
The AS-2537/SR is a two section 35 foot fiberglass whip
antenna. This antenna is a replacement for the NT-66047
aluminum whip. The antenna consists ot an 18 foot top
section that is bolted to the lower section. A pin and
socket arrangement is used to connect the radiating elements
of the two sections. The radiating elements are embedded in
fiberglass and a thermosetting epoxy resin.
Installation: The AS-2537/SR bottom section has
eight 11/16 inch bolt holes on a 10 - 3/4 inch bolt circle
for installing the antenna onboard ship. The bolt holes and
bolt circle are the same as the mounting flange on the
IL-19/U base insulator used with the NT-66047 antenna. The
AS-2537/SR can be installed on the existing base wherever it
is used as a direct replacement. If the antenna is to be
installed at a location other than where a base insulator
was used, a suitable mounting plate drilled to match the
antenna mounting bolt holes is required.
Considerations: The location of the antenna
onboard ship should be selected to provide as clear an area
as possible in the vicinity of the antenna. A minimum of 35
feet should be maintained from other antennas. This
requirement is necessary to reduce the effect of the ship's
structure on the antenna radiation pattern and mutual
coupling between antennas. |
