| AS-2537A/SR |
|
| Physical
Dimensions |
|
| Height |
432
inches |
| Diameter |
12
inches |
| Weight |
120
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 cap screw |
|
|
Description:
The AS-2537A/5R is a two section 35 foot fiberglass whip
antenna. This antenna is a replacement for the NT-66047
aluminum whip. The AS-2537A/SR consists of an 18 foot top
section that screws into a similar bottom section; the
bottom section has an integral mounting base and an
attachment bolt for the antenna feed line. The radiating
elements are six beryllium copper tapes embedded in
fiberglass and a thermosetting epoxy resin.
Installation: The AS-2537A/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 size are'the same as the mounting
flange on the IL-19/U base insulator used with the NT-66047
antenna. The AS-2537A/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 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
distance 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. |
