FM sensitivity with Alpine HU
12-14-2003, 05:45 PM
#1
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Join Date: Aug 2001
Location: Trois-Rivieres, QC
Posts: 117
FM sensitivity with Alpine HU
For those of you who swapped their Bose/Clarion stock system for an Alpine head unit, did you notice a drop in sensitivity on the FM band? I just installed mine (CDA-7995), and I am barely able, if not at all, to hear a station 70 miles away that could be heard on the Bose unit, as well as on every radio in every car I drove on the past years. I tried the ''Normal'' and ''Hi-Fi'' modes on the HU and it didn't have an effect. Specs charts indicate that the Alpine should have a sensitivity of 9.3 dBf, vs 9 dBf for most of the Clarion HU. Maybe the receiver is not up to specs, or, I hope, maybe I have a faulty antenna adapter, even if it's a simple piece of equipement (could it have something to do with the diversity antenna?)
Denis
Denis
12-14-2003, 06:25 PM
#3
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Location: Trois-Rivieres, QC
Posts: 117
I know that GM, among others, have good receiver section in their HU. but I owned an Integra, with the stock HU made by Alpine. I assume that a high quality aftermarket unit should be at least equal in that department too, no?
12-15-2003, 01:11 PM
#4
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Join Date: Oct 2003
Posts: 62
I installed an Alpine (CDA-9813). Now I don't get ANY radio stations. I also noticed that when I tinted the windows, I lost a lot of reception with the stock HU. 
I was thinking of getting a glass mount antenna, plugs into the HU, run wires up behind the a-pillar and headliner, and mount it behind the rear-view mirror, directly on the windshield, they're about 20 bucks. But I think if I'm going to pull everything apart again, I'm just getting XM. And yes, I did use an antenna adapter, and everything was installed correctly.
I was thinking of getting a glass mount antenna, plugs into the HU, run wires up behind the a-pillar and headliner, and mount it behind the rear-view mirror, directly on the windshield, they're about 20 bucks. But I think if I'm going to pull everything apart again, I'm just getting XM. And yes, I did use an antenna adapter, and everything was installed correctly.
12-15-2003, 04:11 PM
#6
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Join Date: Nov 2003
Posts: 43
I have the same problem with my HU. I was wondering if anyone had tried some sort of antenna booster.
According to this, a small sensitivity value is better. That may explain why the Clarion is better than the Alpine in this area.
http://www.fanfare.com/fm-specs.html
Mike
According to this, a small sensitivity value is better. That may explain why the Clarion is better than the Alpine in this area.
http://www.fanfare.com/fm-specs.html
Mike
Originally Posted by dracip
For those of you who swapped their Bose/Clarion stock system for an Alpine head unit, did you notice a drop in sensitivity on the FM band? I just installed mine (CDA-7995), and I am barely able, if not at all, to hear a station 70 miles away that could be heard on the Bose unit, as well as on every radio in every car I drove on the past years. I tried the ''Normal'' and ''Hi-Fi'' modes on the HU and it didn't have an effect. Specs charts indicate that the Alpine should have a sensitivity of 9.3 dBf, vs 9 dBf for most of the Clarion HU. Maybe the receiver is not up to specs, or, I hope, maybe I have a faulty antenna adapter, even if it's a simple piece of equipement (could it have something to do with the diversity antenna?)
Denis
Denis
12-15-2003, 09:04 PM
#7
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Join Date: Aug 2001
Location: Trois-Rivieres, QC
Posts: 117
Hello friends, I have an update about this situation :
http://forums.maxima.org/showthread.php?t=271168
http://forums.maxima.org/showthread.php?t=271168
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