Written by Kelly Wand
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Isolators help RF users to control those sometimes-pesky RF signals. We all know about the problems of signal loss, but sometimes too much signal activity can also be a problem. Signals can get a bit out of control, often times traveling back along the line from which they came or influencing other inputs.

Isolators are used in a similar way on signals as blinders are on horses. Jockeys use blinders to keep their horses going in one direction, forward. The blinders keep the horse from getting distracted and either veering off to the side of the track or turning around completely to prance back towards the starting gate.

Isolators: Blinders for Signals

By isolating signals, one can lead them in the proper direction. When signals are left to roam free, many problems can result. Signal reflection occurs when a signal bounces back in the direction of its origination, leading to unwanted clutter on the line. The signal can also bleed into other ports when arriving, especially if the ports on a given receiving device are placed in close proximity to one another.

Isolators prevent both of the above mishaps. These devices work to keep a signal securely within its own port, while at the same time blocking any reflection that might occur upon arrival. Such units allow signals to run fast towards the finish line, and to actually stop once they reach the end of the race.

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