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Briandl79
 
Do shark fin antennas improve satellite reception?

I just realized that a lot of shark fin antennas are actually for AM/FM reception? Do they make shark fin antennas for satellite radio, and if so do they help reception in any way?

A friend of mine was telling me that the design helps with satellite cutout under overpasses, but I always thought satellite was very line of sight.

Any thoughts?
Old 11-21-2009, 12:53 PM Briandl79 is offline  
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ritalinjoe
 
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My Tahoe has a shark fin antenna for Satellite radio and Onstar/GPS. The AM/FM antenna is laid out on a grid on the passenger side rear cargo area window. It looks kind of like the defroster grid on rear windows.

I've never noticed the XM/Sirius cut out under overpasses, but it does cut out on sections of I-64 towards Charlottesville, VA because the trees lining the highway are so tall.

But my subscription ran out a while ago so I don't use it anyways. Aux input with ipod is all I need.
Old 11-21-2009, 01:56 PM ritalinjoe is offline  
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DopefishLives
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Quote:
Originally Posted by Briandl79 View Post
I just realized that a lot of shark fin antennas are actually for AM/FM reception?

Who the hell told you that?

In the scenario of Audi the AM/FM is maintained through a conductive material on the rear glass (quarter-rear glass in Avants). When the shark fin is fitted, it is used for AM/FM as well, along with satellite radio and GPS reception.

Indifferent to manufacturer, the shark fin/submarine style antennas came about as a stylish way to solve the increasing demand for wireless signal reception. Satellite radio used small devices like the shark fin and companies picked it up (I think BMW was first) and integrated it, both appearance and function with the whole car.
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Old 11-21-2009, 02:32 PM DopefishLives is offline  
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Rancidpunk666
 
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most am/fm is in the rear glass grids, the radio can pick pick the best of 3 or 4 antennas for reception depending on steering angle, etc.
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Old 11-21-2009, 05:54 PM Rancidpunk666 is offline  
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SemperFly
 
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they do it because it looks nicer than a stubby piece of plastic sticking straight up
Old 11-21-2009, 06:59 PM SemperFly is offline  
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Liquid_Table
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Originally Posted by DopefishLives View Post
In the scenario of Audi the AM/FM is maintained through a conductive material on the rear glass (quarter-rear glass in Avants). When the shark fin is fitted, it is used for AM/FM as well, along with satellite radio and GPS reception.

Is that how they do it? I always wondered where my antennas were because my A6 gets excellent reception.
Old 11-22-2009, 09:59 AM Liquid_Table is offline  
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BullshitBad
 
Pontiac was the first to put antennas in the windshield in the late 60's, and only just now are some of the other manufacturers catching on. technology marches on i guess
Old 11-22-2009, 11:28 AM BullshitBad is offline  
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Tex Arcana
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Pontiac was the first to put antennas in the windshield in the late 60's, and only just now are some of the other manufacturers catching on. technology marches on i guess
Some of those antennas don't work well at all, especially if the glass has the metallic heat-reflective material built into the glass, and the connections between the glass and the wiring didn't hold up too well, so that may be why they went away from them.
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Old 11-22-2009, 04:00 PM Tex Arcana is offline  
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jayjaya29
 
I got a 2000 Nissan Altima which has AM/FM antenna in the rear glass along with the heating elements, I have never had a problem with reception EVER and I listen to a lot of radio...I don't know why its not done on more cars.

In anycase, my friend with a 2002 Passat switched his stubby, roof mounted antenna to an aftermarket "shark fin", his reception still sucks lol it is constantly skipping in and out at any speed.
Old 11-22-2009, 08:11 PM jayjaya29 is offline  
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Thermo1223
 
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Originally Posted by jayjaya29 View Post
I got a 2000 Nissan Altima which has AM/FM antenna in the rear glass along with the heating elements, I have never had a problem with reception EVER and I listen to a lot of radio...I don't know why its not done on more cars.

In anycase, my friend with a 2002 Passat switched his stubby, roof mounted antenna to an aftermarket "shark fin", his reception still sucks lol it is constantly skipping in and out at any speed.

He should check the amp in the antenna under the headliner then.
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Old 11-23-2009, 09:10 AM Thermo1223 is offline  
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RazorWind
 
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Pontiac was the first to put antennas in the windshield in the late 60's, and only just now are some of the other manufacturers catching on. technology marches on i guess

Uhh, Volvo had that feature in the 1970s, I'm pretty sure.

Edit: I have a 1995 model Ford that has it too.
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Old 11-23-2009, 01:26 PM RazorWind is offline  
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Thermo1223
 
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Uhh, Volvo had that feature in the 1970s, I'm pretty sure.

Edit: I have a 1995 model Ford that has it too.

Ya well my mom had it back in the 1950's so there!
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Old 11-23-2009, 01:54 PM Thermo1223 is offline  
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ritalinjoe
 
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Originally Posted by RazorWind View Post
Uhh, Volvo had that feature in the 1970s, I'm pretty sure.

Just like the sweeds to play catch up to US auto manufactures.
Old 11-23-2009, 02:12 PM ritalinjoe is offline  
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Ya well my mom had it back in the 1950's so there!

OH YEAH WELL I INVENTED IT
Old 11-23-2009, 02:37 PM chuckybob is offline  
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Tex Arcana
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OH YEAH WELL I INVENTED IT

unpossible, yuo ar teh 4.2
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Old 11-23-2009, 02:52 PM Tex Arcana is offline  
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