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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 11-30-2006, 06:12 AM   #31
mholley
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A boombox for the Xact Stream Jockey. I pulled all the other pins out of the jack before pluging into the Stiletto. So, it is just an adapter.
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Old 12-01-2006, 07:38 PM   #32
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I am sure someone much smarter than me has already thought of this, so i may be off here. But what I, and many of you, am looking for is better "on the go" reception while outside or in the car with the antenna headphones. I see that you have concluded that the antenna needs power going to it so just plugging one into the antenna jack will not work on its own. Is there any way to "splice" into the headphones and use the antenna wire which is going to the (supposed) antenna which is in the headphones and splice it to a standard (i.e dot micro) antenna and affix it to the headband?
There has got to be a way for better reception here. I love this thing but it is so frustrating to use while moving. Which isn't a good feature of a PORTABLE unit.
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Old 12-01-2006, 08:39 PM   #33
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Quote:
Originally Posted by GB33
I am sure someone much smarter than me has already thought of this, so i may be off here. But what I, and many of you, am looking for is better "on the go" reception while outside or in the car with the antenna headphones. I see that you have concluded that the antenna needs power going to it so just plugging one into the antenna jack will not work on its own. Is there any way to "splice" into the headphones and use the antenna wire which is going to the (supposed) antenna which is in the headphones and splice it to a standard (i.e dot micro) antenna and affix it to the headband?
There has got to be a way for better reception here. I love this thing but it is so frustrating to use while moving. Which isn't a good feature of a PORTABLE unit.
I am sure it is possible. It was actually my first thought before I got my stilleto and before the car kits were on the market. But rather than using it as a portable my though was to use the wire from the connect and attach the antenna wires to an external antenna so that I could go dockless. However I have not gotten to the point of cutting up my headphone wire and try it though since there are no replacements available yet. Looking at the headphones I did notice that it appears that there are 2 wires (atleast) inside the antenna wire. 1 for the antenna and 1 (or 2) for the ear pieces.
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Old 12-02-2006, 07:31 PM   #34
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Lightbulb

I received a xso22 mobile mount for a XTR1 from ebay, cannibalized it for the dock connector. fits the stiletto fine. The power pin was just plastic and made no difference, so I cut that part of the connector off, also snipped the wires to the power and audio out plugs - they did make any difference. Only plug that wired up is the antenna. This connector fits if reveresed from original.
Now, neither the Home antenna or the car antenna make any difference. With or without power applied via the 5v wall wart.
Looking at the headphone connector, theres the ant plug and 3 pins, Im guessing 1 ground, and 2 for the L/R ear piece. So, Im guessing that the home ant MIGHT need power and gets it from the docks. So does that mean that there is a LNA inside the dock ? or in the ant itself ? Havent taken one apart yet. BUT, it also didnt work with a car mag dot either. But I dont get the ANT NOT DETECTED msg as in a dock with no power. Or possibly the antenna plug doesnt fit, and the connection isnt being made at all.

Im showing restraint, and not starting to tear things apart yet.
The ant in the headset must be some passive type. I also dont want to rip it apart in fear of losing it and being able to get a replacement.

Maybe a few more beers will give me some more ideas.


Rich


Quote:
Originally Posted by mholley
I tried this. It made no difference in the signal strength. It must need power.
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Old 12-02-2006, 09:00 PM   #35
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Apparently RonMan figured it out back on 10/09:
http://www.siriusbackstage.com/forum...ad.php?t=88431

it IS powered somehow. Time to start metering out the connector .... now where is that volt meter anyway ?????
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Old 12-02-2006, 09:20 PM   #36
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Quote:
Originally Posted by n2ry
Maybe a few more beers will give me some more ideas.
SWEET! I like how this guy thinks.
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Old 12-04-2006, 12:42 PM   #37
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It seems that if the antenna's have a LNA in them and require a power source, one option is to use a power inserter. But everything I've found is almost as much a dock system anyway. Since the power inserters I've found are all related to signal distribution system.
And if your required to have something plugged in, sort of defeats the purpose anyways. All roads seem to lead back to the DIY repeater subject.
Man, I wish I could find a spare headset antenna I could play around with.

Rich
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Old 12-04-2006, 11:15 PM   #38
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I am not so sure the antenna is powered. I took apart the universal home dock and there was no continuity between the power and the antenna.

Ronman said back in his post there was only a red and black wire, and the antenna cable. He believed that was the power (red is positive, black negative) and the audio was multiplexed onto that power carrier. However this is so very unlikely. A de-mux would have to be installed in the headphones. A mutliplexed signal is digital so would require some type of IC (integrated circuit) chip as well. Also, when I took apart the universal home dock, I seen no IC.

Another scenario where the red and black could be power is if the audio rides on the power carrier as an analog signal, 2 channels (radio frequency). To get to a high enough clarity at the earphones, it would have to be a high RF frequency carrier and in the headset there would be filters consisting of RLC circuits, another high improbabilty due to the size. Again I did not see any of this in the universal dock.

So here is what I think is happening in the headphones. The red and black carry the left and right audio. Inside the sheathed cable carriers the antenna signal, and the sheath is the ground for the whole system, it is even the ground for the audio. At the circuit board is an impedance matching circuit for the earphones.

So why isn't the antenna working when connected straight to the antenna input on the bottom of the stiletto? My guess is the stiletto isn't even looking at the antenna input. I sort of did what N2RY did. I cannibalized a universal dock, ripped out the antenna plug, spliced an antenna into that and getting all excited only to find out it didn't work. After hearing that N2RY attempt didn't work either, I believe that the connector itself plays an important role.

Remember looking at the bottom of the antenna headphones connector. The pins looks something like this. (I am at a hotel right now, and I don't have the headphones with me)

________
|''''''||''{}
________

There are six seperate pins, and the antenna connector. Four of these pins are probably the audio. +L -L and +R -R and two other unknown pins. In the headset connector I bet that the -L and -R are connected together and continuous with the antenna sheath (ground). The +L and +R are the red and black wires.

Maybe one, or both of the unknown pins need to be grounded for the stiletto to see the antenna.

When I get back home tomorrow, I will try this and let everyone know what I find.
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Old 12-20-2006, 08:22 AM   #39
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It seems that PINS 1 & 9 might hold the clue to getting a External antenna working. Maybe this is supplying power or something.

Quote:
Originally Posted by fiver
Don't know if anyone cares or if it might be of help to anyone, but here is what I've been able to figure out so far for the pinouts of the multipin connector.

<SNIP>

I finally gave up on the Soloist and got a home dock so I'm not going to pursue this any more.

If anyone else wants to pick up where I left off, note that if you go sticking probes into various pins while things are powered up you can mess up your Stiletto.

This is a top down view of a connector (dock or what have you)
Code:
          1  2   3   4   5  6  7  8
POWER                                   ANTENNA
          9 10  11  12  13 14 15 16
1: not sure. Seems to be +5 from the dock. Falls to +3.88 when Stiletto is powered
2: +5V USB (VCC)
3: USB Data
4:
5:
6:
7: Audio
8:
9: same as 1
10: USB DATA
11: USB GND
12: dock GND
13:
14: Audio
15: Audio GND
16: Some wierd power from the Dock. Oscillated quite regularly between 2-4 V. Some sort of clock signal?

My experiments lead me to believe that pins 4, 5, and 8 might have something to do with the Stiletto sensing what doc it is in, but don't have an oscilliscope right now. I also didn't feel like cutting into the wires that would be needed to really investigate this further.

original post:
http://www.siriusbackstage.com/forum...ad.php?t=92080
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Old 01-01-2007, 11:33 PM   #40
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Just to keep the techies happy, here are a couple of pics of the headphone board.



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Old 01-02-2007, 12:05 AM   #41
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I would like to add, in this thread, a universal plug and play home dock with Stiletto runs both with and WITHOUT the dock powered. So the pnp dock's board must allow the antenna port's voltage to be stepped up from the battery, allowing the s100 to power the higher gain antenna. ?

if i cover all the contacts on the dock, except the antenna ones, with a small folded piece of paper it won't work. 'antenna not detected' just like an unpowered stiletto dock.
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