Shark fin radio antenna - Defender Source
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  #1  
Old February 18th, 2005, 03:10 PM
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Question Shark fin radio antenna

Radio reception in my area - just north of Los Angeles is pretty poor. I have heard the shark fin antennas seen on BMWs are very good. Anyone have experience with them? I figured to mount it on a scoop lid for the engine bay intake. With a ST, no other place to so with it.
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  #2  
Old February 18th, 2005, 08:08 PM
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Arthur Maravelis
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I always thought the best antenna is the stock type aerial. Anything smaller needs more amplification (active) to match performance.

These little jobs may look cool (not for me) but I can't believe they work better.

I assume you're referring to FM reception so perhaps a better radio is in order?
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  #3  
Old February 18th, 2005, 08:12 PM
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Best bet would be satilite. Its about 10.00 per month. Sirius has a deal for life time for 499.00. No matter where you go it always works just the same. XP is a little more expensive and has a few more channels. Both have everything from porn to comedy and every type of music you like. You can get a free 48 hours of listening time on either website. Systems are slighting more then regular but reception is great. I have crappy reception in my area too. Its great for long trips you never have to change the channel or listen to bs ads after every song.

Larry
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  #4  
Old February 20th, 2005, 01:34 PM
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Paul / Boultbee
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Tx, I spoke to a friend who has the shark fin - no better in the hills of the area. The radio is a 9813 Alpine so pretty good model and 1 year old. I have thought about a seperate amplification for it but I think first will be a re-install. I had it done professionally (unfortunately I was new to the area and use a company called Al &Ed who no one speaks highly of) and think it was done incorrectly. Once the rain stops - on a hill and we have had 10 inches this week and 2 bigger storms coming in - I'll dash mount it and see.
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Old February 21st, 2005, 02:08 AM
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David Shechter
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If you have a CB or an interest in getting one you can use your CB antenna for your radio too. You would get better reception with a 4' or 5' CB antenna, if you are looking for a good stereo place I would recommend "Mobile Fantasy" they are in Northridge, they do very good work.
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  #6  
Old February 21st, 2005, 07:25 AM
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Quote:
Originally Posted by sheki
If you have a CB or an interest in getting one you can use your CB antenna for your radio too. You would get better reception with a 4' or 5' CB antenna.
I've heard of this. Having bent and snapped my aerial, this looks like a much sturdier and better replacement method. What is the 'magic' box needed to do this?
-scott
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Old February 21st, 2005, 10:41 AM
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Hmmm, A CB antenna is tuned for about 35 MHz while a FM antenna is tuned for about 100 MHz so I don't know how well it would work. I bought a new antenna and a new cable to go from the antenna to the radio, both improved reception greatly! The antenna I bought is about twice the length of a normal antenna but it collapses to 1/2 the length of a normal antenna for trail use. When I pulled out the cable it was all beat up and spliced so that also made a big difference.
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Old February 21st, 2005, 12:09 PM
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Paul / Boultbee
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Yep, I think my antenna cable is shot but I want to replace it anyway. . Its raining until Thursday so nothing is happening for a while. I'm going to love saying this so here goes...
Is length really that important? Some of these smaller but thicker, rubber coated antenna pitch themselves as having the best pick up reception.
If I can not get it how I like it, time to get the 6 CD changer or iPOD mount and bag FM for AM sports & road updates only.
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  #9  
Old February 21st, 2005, 02:15 PM
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Quote:
Originally Posted by Mike Hippert
Hmmm, A CB antenna is tuned for about 35 MHz while a FM antenna is tuned for about 100 MHz so I don't know how well it would work.
Tuning a CB antenna is for trasmitting more than receiving. Not going to transmit with an AM/FM radio. As long as the antenna works for reception it will do. The one downside to this setup is that you cant have the CB and listen to tunes at the same time. I'm pretty sure anyway.
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Old February 21st, 2005, 02:30 PM
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Yes it's doable but not optimal

http://www.firestik.com/Tech_Docs/am-fm-cb.htm

I am no antenna expert but if you could get an antenna about 1/2 wavelength (54") that would be great otherwise 1/4 wavelength (27") would be fine.
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  #11  
Old February 21st, 2005, 11:24 PM
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David Shechter
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I have the Firestik set-up and they make a box/splitter for connecting the CB and radio, they will both work at the same time. You can order direct from Firestik.
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