OJS Company Tel./Fax: 8-0232-51-51-71
Hours of working enterprise:
from 8:00 until 16:40 (Monday-Thursday ), Friday 8:00 - 15:40
Tel./Fax: 8-0232-51-51-71
Hours of working enterprise:
from 8:00 until 16:40 (Monday-Thursday ), Friday 8:00 - 15:40
PURPOSE AND STRUCTURE
Antenna is used for TV broadcasting at one of the channels of IV-V TV ranges.
Constructively antenna represents a vertical slot aerial array, made on the pipe of a small-scale diameter. From external actions a slot antenna array is protected by radio transparent covering. Antenna is installed on the top of a tower, roof of a high building. If necessary, antenna can be installed on the band of the bearing (tower) by means of brackets.
In order to give to the antenna direction in horizontal surface reflector is used. Amplification constant of the antenna increases approximately at 2 dB.
Lightning protection is secured by direct bonding in direct current of the antenna with the earthing loop of the bearing.
DD in horizontal surface DD at vertical surface
TECHNICAL CHARACTERISTICS
| Characteristic
|
Modification of the antenna | |||
| Slot-1 | Slot-2 | Slot-3 | Slot-4 | |
| Frequencies range, MHz | 470 – 790 | |||
| Band of working frequencies, MHz | within the range | |||
| VSWR in the band of working frequencies |
less or equal 1,2 |
|||
| Polarization | Horizontal | |||
| DD at horizontal surface | Circular or directed | |||
| Feed impedance, ohm | 50 (75) | |||
| Input connector | Upon customer’s choice | |||
| Quantity of slots | 1 | 2 | 4 | 8 |
| Amplification constant relative to isotropic radiator under circular DD, dB | 5
|
8
|
11
|
14
|
| Total input capacity, kW | 0,5 | 1 | 2 | 5 |
| Height of antenna, mm | 750-1150 | 1250-1900 | 2250-3400 | 4000- 6200 |
OJSC "GDB "Luch" 2015-2024