The 8.4m Extension kit can be used to extend the width of the ground antenna for wider timing points, the extension kit includes additional mat elements, dummy antennas and extra long cables. 

In the 8.4m configuration the mat contains 6 empty mat elements to spread antennas more evenly across the length, for this reason ankle or shoe mounted transponders should not be used when working with mats which have been extended longer than 4.8m. 

Follow these instructions carefully to set up the 8m extension kit for the ground antenna. This will ensure correct installation, and avoid damage to the antenna and the coaxial cables.

Required Equipment

Instructions

1. Unfold the 4.8m ground antenna and the two elements of the 8m extension kit. Place them in the order displayed below and make sure all antenna cables run in the same direction.
    
2. Remove the lids from the ground antenna. Do this by lifting the red panels from the corner of each antenna element. Make sure not to damage the antenna or the coaxial cables.
   
    
3. Replace the antenna in element 2 and 4 of the ground antenna with one dummy antenna element each. Store the remaining antennas in a safe location. Insert the third dummy element into the empty single element antenna mat (element: 0).
   The completed antenna should be setup in the following way: every element marked with an “A” has to contain an antenna, every element marked with a “D” has to contain a dummy element.
   
    
4. Connect the ground antenna to the extension kit. Do this by pressing the hinge joints from the five element antenna mat into the corresponding spaces of the ground antenna. Repeat this to connect the single element antenna mat to the ground antenna. You can use a rubber mallet to simplify this step.
   
    
5. Place both antenna cables from the five element antenna mat into the channels of the ground antenna and the single element antenna mat. Afterwards place the six antenna cables from the 4,8m ground antenna into the channels of the single element antenna mat.
   
    
6. Close the lids of all open antenna mats. Ensure that the cables do not cross over within the element. Work in the direction of the cables - starting at element 8, working through to element 0.
   Then press or step on the lids in the following order: first at the center of the short sides, next on the corners and finally on the edges of the element. Never hit in the middle of the lid. Use a rubber mallet to simplify this step.
    
7. Connect each antenna cable to the decoder by plugging it in and twisting it clockwise 90 degrees. The cables can be connected in any order.
   
    
8. Perform a brief function test. Switch on the decoder and validate that the antenna is working properly, e.g. by using a Test Transponder.