Datron ABB1000 기술 매뉴얼 - 페이지 9

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ABB1000-MSc

Operating Characteristics

The ABBIOOO can be mounted in many different configurations

depending on your available space and communication requirements.

The best mounting configuration for most installations is the Delta

loop which has a large aperture for convenient installation. The stan-

dard version of the antenna is the ABBIOOOB, while the ABBIOOOA

is an extended length version for increasing efficiency in the 2 to 10

MHz range. The mounting arrangement for those configurations are

shown in Figures 2 and 3. These are only suggested mounting config-

urations; because of the flexibility of the antenna system, you can tay-

lor the final installation for any site restrictions while maintaining

good communications.

Figure 4 shows the ABBIOOOA model in a diamond configuration,

and Figure 5 shows the same model in a rectangle configuration. Two

additional insulators are included to aid in the construction of these

alternative configurations. There is very little change in performance

if you change the dimension or shape, providing the total wire length

is maintained and the aperture of the antenna is kept as large as possi-

ble.

In order to maintain efficiency and matching, it is recommended that

the antenna not be erected with shorter masts than those shown in Fig-

ures 2 and 3. However, if there are space restrictions, smaller configu-

rations can be used with some degradation in matching of some

frequencies and radiation efficiency (especially at low frequencies).

This performance degradation will be minimal as long as the base sec-

tion of the antenna is at least 26m to 28m in length and is kept 2m

above the ground.