Array Solutions AS-SAL-12 Mark II User Manual page 3

Description
In principle, the array provides directivity by summing signals from one loop with
delayed signals from an oppositely phased and positioned loop. Both the delay and loop
phasing are largely frequency independent providing a directive pattern over a wide
frequency range.
The array consists of four identical right triangle shaped wire loops that its vertical side is
common to the four loops in the form of an aluminum mast insulated from the base
section. The loops are arranged around the mast so that one loop points towards the
northeast, another to the southeast, another to southwest, and another to the northwest.
The direction and directional mode of the array is commanded by a controller that
connects directly to your receiver. The controller has buttons for changing the direction,
flipping to the opposite direction, and selecting the directional mode. The directional
modes include a Single or UNI-directional mode as well as a dual or BI-directional mode.
Visual indicators show the currently selected direction and directional mode. A remote
interface is included that enables the controller to be commanded by a computer.
A single RG-6 coaxial feed line connects the controller to the array to power and
command the array as well as transport the received signals from the array to the
controller.
Ferrite couplers are located along the base of each loop at a specific distance from the
mast and connected to balanced feed lines that bring the signals to a switching unit
Array Solutions - SAL12/20/30 - Mark II Manual – Rev. 1.5.1 – September, 2018 3