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Eight inches in this case won't make much difference. Forward gain will not change to where you could notice it. Here is how to construct a director for a 3 element system where the director will hang out in front on the vehicle. Fabricate some type of bracket (preferably non conductive) that will hold a mirror mount type antenna bracket out in front of your driven element and at the same base height.

The idea is to make a sort of 1/4 wave ground plane antenna out of this mirror mount but it will only have one radial sloping downwards out in front. The top whip and bottom radial should be connected by removing the plastic insulator around the connector. You use the four bolts on the mirror mount to bolt it to your insulating support on your truck. If the support is conductive, you might want to insulate the aluminum mirror mount from the support and vehicle ground plane.

The only reason your director is longer then your other elements now is because it's floating and is only half an element to begin with. You do not tune the director with an MFJ. You keep the top and bottom halves equal lengths and adjust them both for maximum forward gain. I like to use a distant stable carrier in my receiver with a digital volt meter connected across its meter to increase the resolution.

<blockquote data-quote="Shockwave" data-source="post: 300279" data-attributes="member: 10882">Eight inches in this case won&#039;t make much difference. Forward gain will not change to where you could notice it. Here is how to construct a director for a 3 element system where the director will hang out in front on the vehicle. Fabricate some type of bracket (preferably non conductive) that will hold a mirror mount type antenna bracket out in front of your driven element and at the same base height. The idea is to make a sort of 1/4 wave ground plane antenna out of this mirror mount but it will only have one radial sloping downwards out in front. The top whip and bottom radial should be connected by removing the plastic insulator around the connector. You use the four bolts on the mirror mount to bolt it to your insulating support on your truck. If the support is conductive, you might want to insulate the aluminum mirror mount from the support and vehicle ground plane. The only reason your director is longer then your other elements now is because it&#039;s floating and is only half an element to begin with. You do not tune the director with an MFJ. You keep the top and bottom halves equal lengths and adjust them both for maximum forward gain. I like to use a distant stable carrier in my receiver with a digital volt meter connected across its meter to increase the resolution.</blockquote>

[QUOTE="Shockwave, post: 300279, member: 10882"] Eight inches in this case won't make much difference. Forward gain will not change to where you could notice it. Here is how to construct a director for a 3 element system where the director will hang out in front on the vehicle. Fabricate some type of bracket (preferably non conductive) that will hold a mirror mount type antenna bracket out in front of your driven element and at the same base height. The idea is to make a sort of 1/4 wave ground plane antenna out of this mirror mount but it will only have one radial sloping downwards out in front. The top whip and bottom radial should be connected by removing the plastic insulator around the connector. You use the four bolts on the mirror mount to bolt it to your insulating support on your truck. If the support is conductive, you might want to insulate the aluminum mirror mount from the support and vehicle ground plane. The only reason your director is longer then your other elements now is because it's floating and is only half an element to begin with. You do not tune the director with an MFJ. You keep the top and bottom halves equal lengths and adjust them both for maximum forward gain. I like to use a distant stable carrier in my receiver with a digital volt meter connected across its meter to increase the resolution. [/QUOTE]

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