FM Antenna

jaya000 · 21st December 2006, 05:09 AM

I want to install powerful Fm antenna to get best reception. I will prefer to buy active antenna. Kindly suggest. or else i will like to make one powerful FM booster. I hv experince & can excess equipment for testing the same.

lndm · 21st December 2006, 12:28 PM

Either way, you might try mounting your antenna vertically in the centre of your roof.

jaya000 · 23rd December 2006, 11:41 AM

nice! but i need more powerful antenna installed. Hence thought of using active antenna. I think blaupunkt were making it before but i can't see it now on iinternet. antenna booster inreases gain by min 20db which is not possible by mechanical antenna. i need just good FM booster circuit or complete active antenna.

dnsey · 23rd December 2006, 12:54 PM

Any sort of RF amp or 'active' antenna will amplify noise as much as signal. If your reception is noisy now, it won't help much! The only simple and practical way of increasing antenna gain is to make it more directional, which obviously isn't much good for mobile use.
I agree that placing the antenna in the centre of the roof is a good idea, as it maximises the virtual ground plane.

sbrads · 20th January 2007, 08:10 AM

Having just installed a Pioneer CD radio into my 1997 Nissan Primera, and having to find out why it gave terrible reception, I can tell you that it's rear roof aerial is an active Blaupunkt one, so if you see a late 96-99 Primera in a breaker's with a flexi black roof aerial that's the one to have. It does work good once it's got 12v fed up it's power lead!

You can see it on the Blaupunkt site www.blaupunkt.de if you enter the Nissan Primera 10/1996- into their Car Configurator database, tick the Antennen box, select Suche Starten, select B for a rear roof mount position.

Bad silver · 27th January 2007, 05:40 AM

Just a thought...

Can you make antenna more directional by using the body of the car as an arena + mixer that cancels interference + amplifier?

Or maybe you can make 2 real antennas - one dedicated to measuring noise and the other one to measuring noise + signal. Then, you cancel the noise with an inverter and amplify signal?

21st December 2006, 05:09 AM	#1
jaya000 diyAudio Member Join Date: Dec 2006	FM Antenna I want to install powerful Fm antenna to get best reception. I will prefer to buy active antenna. Kindly suggest. or else i will like to make one powerful FM booster. I hv experince & can excess equipment for testing the same.

23rd December 2006, 12:54 PM	#4
dnsey diyAudio Member Join Date: Mar 2004 Location: Shropshire, England	Any sort of RF amp or 'active' antenna will amplify noise as much as signal. If your reception is noisy now, it won't help much! The only simple and practical way of increasing antenna gain is to make it more directional, which obviously isn't much good for mobile use. I agree that placing the antenna in the centre of the roof is a good idea, as it maximises the virtual ground plane. __________________ "I never did care for music much; It's the high fidelity!" Flanders & Swann

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21st December 2006, 12:28 PM	#2
lndm diyAudio Member Join Date: Mar 2006 Location: nsw	Either way, you might try mounting your antenna vertically in the centre of your roof.

23rd December 2006, 11:41 AM	#3
jaya000 diyAudio Member Join Date: Dec 2006	nice! but i need more powerful antenna installed. Hence thought of using active antenna. I think blaupunkt were making it before but i can't see it now on iinternet. antenna booster inreases gain by min 20db which is not possible by mechanical antenna. i need just good FM booster circuit or complete active antenna.

20th January 2007, 08:10 AM	#5
sbrads diyAudio Member Join Date: Jun 2005 Location: Kent, UK	Having just installed a Pioneer CD radio into my 1997 Nissan Primera, and having to find out why it gave terrible reception, I can tell you that it's rear roof aerial is an active Blaupunkt one, so if you see a late 96-99 Primera in a breaker's with a flexi black roof aerial that's the one to have. It does work good once it's got 12v fed up it's power lead! You can see it on the Blaupunkt site www.blaupunkt.de if you enter the Nissan Primera 10/1996- into their Car Configurator database, tick the Antennen box, select Suche Starten, select B for a rear roof mount position.

27th January 2007, 05:40 AM	#6
Bad silver diyAudio Member Join Date: Jan 2007 Location: Chicago	Just a thought... Can you make antenna more directional by using the body of the car as an arena + mixer that cancels interference + amplifier? Or maybe you can make 2 real antennas - one dedicated to measuring noise and the other one to measuring noise + signal. Then, you cancel the noise with an inverter and amplify signal?

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