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Old 01-13-2007, 03:57 PM   #1
Titanium06
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Default Ground Plate under attenna

I'm using a ground plate under my Starmate 4 in the house.
I have 2 vehicle docks, 1 in my vehicle and use one with a 120v-12v adaptor inside the house. I will use the second in house one on my motorcycle come spring. Anyways I'm using a round cookie sheet under the antenna and reception is ok. Just wondering if there is a specific size of ground plate to use in conjunction with the Sat Radio waves.
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Old 01-13-2007, 06:41 PM   #2
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Quote:
Originally Posted by Titanium06
I'm using a ground plate under my Starmate 4 in the house.
I have 2 vehicle docks, 1 in my vehicle and use one with a 120v-12v adaptor inside the house. I will use the second in house one on my motorcycle come spring. Anyways I'm using a round cookie sheet under the antenna and reception is ok. Just wondering if there is a specific size of ground plate to use in conjunction with the Sat Radio waves.
Yes, 6" radius, but you probably won't have much of a difference in received signal. Are you losing the signal at all, or is it just showing low on your receiver?

By the way, it's called a ground plane, not plate. Although in your case it could be called a ground cookie sheet
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Old 01-14-2007, 06:09 PM   #3
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All antennas come with a plastic tail or a 'couple of inch' piece of plastic you can place over the wire where it goes into the antenna. One thing the tail does is to help with the correct spacing for the minimum distance required for the ground plane. If you have metal all around the antenna at that distance, then you're OK.

But having said that.. I have my antennas sitting on the plastic dashboards of two of my cars. There's no metal underneath and they work fine. Probably not as good as with a proper ground plane, but definitely good enough to give me trouble free service
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