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07-07-2007, 03:43 PM
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#316
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FLAC
Join Date: Jan 2004
Location: UK
Vehicle: XM 2.1 TD
Posts: 1,282
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I see no reason why 100pf will perform any different in this application.
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Lez.
XM 2.1TD ~ Morette triple headlights+HID ~ Leather kit ~ XC70 alloys
Exhaust rear boxes removed ~ meshed air filter
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07-08-2007, 05:47 PM
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#317
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Maximum Bitrate
Join Date: Nov 2006
Location: Gold Coast, Australia
Vehicle: 06 Impreza Hatch
Posts: 448
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Quote: Originally Posted by Lithoss  has anyone had any success with this for a powered antenna? my subaru has a powered antenna, just wanted to check to see if anyone has done this yet before i rip apart my silabs.
I've had no luck with my Subaru and the Silabs. Even after soldering the antenna jack onto the silabs it didn't work at all in the car. I figured there was something specific with my car that was stopping it form work. Perhaps the powered antenna is the problem.
I've had to put the radio on the backburner for a while before I broke the bloody thing.
If the antenna is powered, perhaps maybe there is a fuse somewhere to stop the powering and maybe allow it to work
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I installed my carpc into my pet Kangaroo, mate.
Last edited by NiSlo; 07-08-2007 at 06:11 PM.
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07-08-2007, 06:07 PM
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#318
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FLAC
Join Date: Jan 2004
Location: UK
Vehicle: XM 2.1 TD
Posts: 1,282
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if you have a powered antenna and you remove power then you have a non working powered antenna..........
__________________
Lez.
XM 2.1TD ~ Morette triple headlights+HID ~ Leather kit ~ XC70 alloys
Exhaust rear boxes removed ~ meshed air filter
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07-08-2007, 06:13 PM
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#319
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Maximum Bitrate
Join Date: Nov 2006
Location: Gold Coast, Australia
Vehicle: 06 Impreza Hatch
Posts: 448
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Makes sense.
P.S. wer'e are talking about a power amplified antenna and not an electric antenna (goes up when the car is on, down when it's off) aren't we?
__________________
I installed my carpc into my pet Kangaroo, mate.
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07-08-2007, 07:37 PM
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#320
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Constant Bitrate
Join Date: May 2007
Location: Wichita, KS
Vehicle: '06 Impreza WRX TR
Posts: 159
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Correct, power amplified antenna. I have no clue how they work, to be honest. Yes you can unpower it, theres a connection in the rear of the cd deck that powers it. When i first installed my cd player i forgot to hook that up and got crappy reception, but i did get SOME reception.
What do you mean it doesnt work at all NiSlo? Does it work at all with no antenna hooked up at all? It doesn't make sense that it wouldn't at all, even if bad reception. (i think i used 'at all' a few too many times)  |
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07-08-2007, 07:55 PM
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#321
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Maximum Bitrate
Join Date: Nov 2006
Location: Gold Coast, Australia
Vehicle: 06 Impreza Hatch
Posts: 448
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It worked in the computer in the house and I got a few stations, but as soon as it went into the car I got nothing at all. I tried soldering the new connection to plug the car antenna in properly as others have done in this thread but I still got nothing.
All I could get in the car no matter what I tried was static 
__________________
I installed my carpc into my pet Kangaroo, mate.
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07-08-2007, 07:59 PM
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#322
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Constant Bitrate
Join Date: May 2007
Location: Wichita, KS
Vehicle: '06 Impreza WRX TR
Posts: 159
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Quote: Originally Posted by NiSlo It worked in the computer in the house and I got a few stations, but as soon as it went into the car I got nothing at all. I tried soldering the new connection to plug the car antenna in properly as others have done in this thread but I still got nothing.
All I could get in the car no matter what I tried was static
Hmmm. I guess im gonna have to grab my gf's laptop and do some experimenting then.... this sucks, now i might have to wait for the mp3car HD radio to come out....... |
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07-08-2007, 08:42 PM
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#323
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Maximum Bitrate
Join Date: Nov 2006
Location: Gold Coast, Australia
Vehicle: 06 Impreza Hatch
Posts: 448
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Now that I know the antanna in the subie is powered, I might have another look. The amplifier might be changing the resistance of the antenna which the silabs doesn't like. I beleive the silabs is epexcting an antenna with 50 or 75ohm resistance. I cant remember which one at the moment.
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I installed my carpc into my pet Kangaroo, mate.
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07-08-2007, 09:49 PM
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#324
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Constant Bitrate
Join Date: May 2007
Location: Wichita, KS
Vehicle: '06 Impreza WRX TR
Posts: 159
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Quote: Originally Posted by NiSlo Now that I know the antanna in the subie is powered, I might have another look. The amplifier might be changing the resistance of the antenna which the silabs doesn't like. I beleive the silabs is epexcting an antenna with 50 or 75ohm resistance. I cant remember which one at the moment.
Did you try the capacitor? I'm not sure what happens without it, i really need to look into how powered antenna's actually work, i dont have any experience with them. google here i come.
Last edited by Lithoss; 07-08-2007 at 09:52 PM.
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07-08-2007, 10:02 PM
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#325
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Maximum Bitrate
Join Date: Nov 2006
Location: Gold Coast, Australia
Vehicle: 06 Impreza Hatch
Posts: 448
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No I haven't it with a capacitor. I though that was only to prevent a 12v surge hitting the silabs, not to improve reception. For $1 part, it's worth a go I guess
__________________
I installed my carpc into my pet Kangaroo, mate.
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07-12-2007, 10:42 AM
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#326
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Raw Wave
Join Date: Mar 2004
Location: Redondo Beach, CA
Vehicle: 2004 Toyota 4Runner
Posts: 1,969
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Per the schematic, there is already a DC filter at C1 (100pf) with D2 shunting transients.
Like a few of the others here, I was never able to achieve stable reception with the vehicle in motion. If anyone in SoCal has one of these devices integrated and working well (while driving), I'd love to see/hear it the next carpc meet up.
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07-12-2007, 03:08 PM
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#327
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Variable Bitrate
Join Date: Nov 2004
Location: San Diego
Vehicle: 1991 Lincoln Towncar
Posts: 369
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Mine works pretty well while driving, only problem i have with it is the lag
__________________
Core duo
320gb harddrive
256 ddr
8 lilliput
still installing...
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07-12-2007, 09:29 PM
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#328
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Constant Bitrate
Join Date: May 2007
Location: Wichita, KS
Vehicle: '06 Impreza WRX TR
Posts: 159
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Quote: Originally Posted by rando Per the schematic, there is already a DC filter at C1 (100pf) with D2 shunting transients.
Like a few of the others here, I was never able to achieve stable reception with the vehicle in motion. If anyone in SoCal has one of these devices integrated and working well (while driving), I'd love to see/hear it the next carpc meet up.
very true... but why are there two leads labeled antenna?? |
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07-13-2007, 06:36 AM
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#329
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Constant Bitrate
Join Date: Dec 2005
Location: Sydney
Vehicle: 2005 Subaru Impreza RS
Posts: 154
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pic?
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07-13-2007, 08:10 AM
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#330
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Constant Bitrate
Join Date: May 2007
Location: Wichita, KS
Vehicle: '06 Impreza WRX TR
Posts: 159
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Quote: Originally Posted by SmoL pic?
im referring to the schematic on silab's site. |
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