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Stiletto Stiletto...it's not just for shoes. Come here to talk about the new SL2, the SL100, or the SL10. Share tips, tricks and pointers, all available via WiFi...just like your music!

 
 
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Old 10-19-2006, 03:01 PM   #1
mattnin
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Default Home or Car Antenna Adapter for Stiletto

Part # for the universal connector is 91944 MXI. This is the connector that comes with the Sportster 4 home dock that plugs in direct to the Stiletto. I have searched up and down the web or this piece, but cannot find it. The name of the company that makes the PCB with this connector on it is Kiryung Electronics. I will be doing more research when I get home.

I am nearly positive that the circular plug on the bottom of the stiletto is a SMC or SMCC connector. Does anyone know this for certain? I believe this is the satellite antenna input for the Stiletto. I took apart the Sportster 4 home dock and it appears the traces for the antenna lead straight to the circular connector on the universal adapter.

Now, there are companies that make SMB to SMC adapters. This would mean that we could plug the SMB connector from a home/car antenna straight into the stiletto without using the universal adapter.

Also I must point out that the Sportster 4 home dock PCB is very simple. It appears all there is an impedance matching circuit for the audio, and dead straight traces for the power and the antenna. I also have reason to believe that the antenna is powered, and the satellite signal rides on the 5VDC power. This would explain why the USB cable that comes with the stiletto has the circular SMC adapter included.

If anyone else has any more information, please include it on this thread. I am positive I will find a way to connect a car/home antenna to the stiletto without purchasing a car dock.
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Old 10-19-2006, 03:19 PM   #2
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If the antenna signal does ride on the 5VDC, then an adapter can be fashioned easily using a female USB adapter connected to the USB adapter that came with the Stiletto. You would have to sauter the antenna to the female USB adapter power. I will keep everyone updated when I find out more.
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Old 10-19-2006, 07:12 PM   #3
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It turns out that the USB cable SMC connector is wired differently than the headphone SMC connector. The USB cable SMC connector is purely a ground, with the center as a ground too. The resistance between the outer edge and the center of the SMC is 0 ohms, the headphone resistance is 25 ohms. So this means that the USB cable cannot be used to hook up an antenna to.

Also, here is a how the USB cable pinout is. I tested it using a multi-meter.

Code:
GND     D+ VCC
(-): : : : | | :
GND     D- VCC
So the furthest two pins from the SMC connector are both VCC, and electrically continuous.

A SMC to SMB adapter will have to be used to wire a home/car antenna to a stiletto.

I am hoping someone can chime in here and give an exact identification to the SMC connector used on the stiletto unit. If not, I will figure it out myself, but a little help will be appreciated!
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Old 10-20-2006, 08:10 AM   #4
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Well I got into trouble with the girlfriend yesterday because I spent so much time in the shop looking over this little PCB. Anyway, I found out some more details.

The antenna is more than likely not powered because center cable is not continuous with the +5V. The antenna is the small circular connector on the bottom of the stiletto. This is either a SMC or SSMB or SSMC connector. If someone knows exactly what this is, I would love to know before I go ordering parts!

What we are going to need is an adapter between series with the SSMC being a plug and the SMB being a jack. This would make the stiletto work with a regular car/home antenna. Getting a dock would not be necessary at all. Believe me, take apart the sportster 4 home dock and you will see that maybe $5 of parts are in there. The antenna is literally hooked up directly to the stiletto.
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Old 10-20-2006, 11:12 AM   #5
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Just wanted to let you know that some of us are actually reading your posts. I get what your saying but I lack any electrical experience to be of any help.

Keep us posted on your findings.
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Old 10-23-2006, 09:33 AM   #6
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Well I found a piece that is close to what we need, but not quite!

http://store.xmfanstore.com/directconnect.html

Except that the SSMB side is a plug and not a jack. Still looking!
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Old 10-25-2006, 08:12 PM   #7
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Post Possible solution ....

Maybe all's thats needed is a SSMB bulkhead jack to jack to mate it from the Direct Connect Antenna Adapter and the stiletto.

Those cant be tough to find.


Rich





Quote:
Originally Posted by mattnin
Well I found a piece that is close to what we need, but not quite!

http://store.xmfanstore.com/directconnect.html

Except that the SSMB side is a plug and not a jack. Still looking!
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Old 11-26-2006, 06:38 PM   #8
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any luck? This is great that someone with knowledge is looking into this. There has to be a way.
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Old 12-07-2006, 10:48 AM   #9
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A continuation of this thread:

http://www.siriusbackstage.com/forum...t=89664&page=3

Rich
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