Instructions / Assembly

Now turn the receiver to be perpendicular to the transmitter. The signal will suddenly drop to almost

nothing. This is called a“null”. Move the receiver around a little to see how sharp and precise this null

point is and how dependent it is on being exactly perpendicular.

Now let’s look at some other places to nd nulls.Back away from the transmitter and walk past it o to

the end like the image below:

There was a null just as you crossed the axis of the transmitter,just like be fore this is called a“crossing

null”. Walk around and see that the crossing null is detected any time you cross either end of the

transmitter, no matter how far away you are as long as you are within range. The transmitter with the

receiver rod held straight in front of you and notice that you get a crossing null at two points of the

circle,directly across from each other.

And on a line that runs right through the center of the transmitter, parallel with its long dimension.