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Vizualogic FM Modulator question


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808vip 
Copper - Posts: 67
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Joined: May 24, 2003
Location: United States
Posted: July 16, 2005 at 2:41 PM / IP Logged  
Has anyone experienced problems with Vizualogics FM Modulator (ie. introduced engine noise, poor FM reception,...)?
If so did you replace with a new one or a different brand of modulator? Are my results typical of FM modulators? Is there a trick to getting better results with my modulator.
I have an Eclipse AVX2404 so I am not able to get a direct audio line in.
auex 
Platinum - Posts: 5,041
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Joined: December 23, 2002
Location: Arizona, United States
Posted: July 16, 2005 at 5:23 PM / IP Logged  
Yes engine noise is common among fm modulators. What you can do to help is get power and ground from the same point as the radio. I have also found that if the chassis of the fm modulator, if metal, is touching any ground or bare metal in the car it also produces noise so make sure it isn't touching any metal.
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NowYaKnow 
Gold - Posts: 1,217
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Joined: December 18, 2002
Posted: July 16, 2005 at 10:56 PM / IP Logged  
Noise with the vizualogic systems seems extremely common. I usually put a noise filter right up before the fm mod as close as you can and it works awesome. I use a style like seen below:
Vizualogic FM Modulator question -- posted image.
Good luck,
Mike

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