Quote:
Originally Posted by Oriental Life
In BRZ, there is a GPS and XM antenna in the antenna base - shark fin covers it, adding attenuation, yes. You may not notice it, but in harsh conditions - you will.
Secondly, areal (FM, AM, HD Radio) need a whip. Fin has etching on the inside to compensate for the lack of whip, but its compact design will also introduce some signal loss.
FR-S guys - don't worry - its just analog areal for you, thus you are not affected.
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sorry but a lot of this is bs or maybe you just installed wrong. i get better xm and FM with my visual garage one.