**** BEGIN LOGGING AT Thu Sep 15 02:59:57 2011
Sep 15 18:27:55 <PBeck> hi
Sep 15 21:13:41 <josvuk> hello
Sep 15 21:14:40 <josvuk> how much is the computepower of the newest openmoko portable computer?
Sep 15 21:15:20 <josvuk> In mips, could it be used for sdr (software defined radio)
Sep 15 21:15:40 <SpeedEvil> You mean the GTA04?
Sep 15 21:16:01 <SpeedEvil> It's a 1GHz processor - yes you can use it in principle for SDR - but the radio can't do that
Sep 15 21:16:08 <SpeedEvil> you'd need to add radio hardwre.
Sep 15 21:16:10 <josvuk> Are there selfmade devices available frontends for the HAM HF and UHF and VHF
Sep 15 21:16:22 <SpeedEvil> And in general, SDR is always more power intensive than doing it normally.
Sep 15 21:16:51 <SpeedEvil> A $.5 bit of crystal can do a billion floating point operations a second on a nanowatt of power.
Sep 15 21:17:11 <SpeedEvil> josvuk: What are you trying to do? 
Sep 15 21:18:51 <josvuk> SpeedEvil: There are some sdr kits around which converts the HAM Bands to inphase Quadrature signals 
Sep 15 21:19:13 <josvuk> so I am wondering if the decoding could be done with openmoko
Sep 15 21:19:29 <josvuk> becasuse it is so small :-)
Sep 15 21:19:53 <josvuk> and therfor I dont to have carry a big computer with me
Sep 15 21:20:25 <SpeedEvil> Have you looked at pandaboard and beagleboard? They may be a better fit.
Sep 15 21:22:18 <josvuk> No actually no, why they are better? More computepower? On the otherhand with beagleboard I can't Telephone
Sep 15 21:22:54 <josvuk> So I think it would be good to have an HAM Tranciever and a mobile phone in one device :-)
Sep 15 21:23:13 <SpeedEvil> It's got more IO, and you can connect stuff easier to it.
Sep 15 21:23:28 <SpeedEvil> You're going to end up with something sticking out of the phone anyway
Sep 15 21:25:31 <josvuk> Hm, right but I can make a wooden case for the openmoko witch is bigger as the standard and design it so that the additional HAM frontend hardware fit in it :-)
Sep 15 21:26:51 <josvuk> Has it a stereo line input?
Sep 15 21:27:01 <SpeedEvil> No
Sep 15 21:27:08 <SpeedEvil> So you'd need a USB soundcard
Sep 15 21:28:46 <josvuk> Do you know of some openhardware usb soundcards which are really small, and all the pcb's are availlabele
Sep 15 21:29:23 <josvuk> Hm, what usb has it 2.0 or smaller?
Sep 15 21:29:36 <SpeedEvil> USB2 I think
Sep 15 21:29:48 <SpeedEvil> dealextreme.com have lots of very small soundcards
Sep 15 21:30:05 <SpeedEvil> TI I think may still have some soundcard ICs
Sep 15 21:30:07 <SpeedEvil> I'm unsure
Sep 15 21:32:20 <josvuk> Ah, ok thank you ....   I Think  ....  still a lot of work to do :-(
Sep 15 21:51:18 <DocScrutinizer> umm I'm not sure we maybe got testpoints for line in on A6
Sep 15 21:51:43 <DocScrutinizer> and it has USB1.1
Sep 15 21:52:41 <DocScrutinizer> on A7 I think we should have either testpoints or 0R to GND
Sep 15 21:53:58 <DocScrutinizer> my apologies for the schematics being a bit unspecific regarding this detail
Sep 15 21:54:33 <DocScrutinizer> I shuld have taken more care to check this line-in situation and bring it to the schematics
Sep 15 21:56:50 <DocScrutinizer> for A8 I managed to tie the line-in to headset, so you could have used the 3.5mm for line-in as well. Alas we all know A8 never made it to anything beyond some 5 or so prototypes
Sep 15 22:03:06 <DocScrutinizer> josvuk: if you need more details, ping me
Sep 15 22:03:41 <DocScrutinizer> I might be able to look up details for particular board revisions that aren't published
Sep 15 23:48:55 <josvuk> Hi, Doc are you still around?
Sep 15 23:54:20 <doc|home> .
Sep 15 23:55:14 <josvuk> hi doc
Sep 15 23:56:38 <josvuk> Where to get a A8 version? Freerunner seems only to be A7 :-(
Sep 15 23:58:02 <josvuk> Are there anywhere pcb's available? Can it be soldered by hand hopefully no bga chips on it ....
Sep 16 00:20:52 <SpeedEvil> A8 does not exist - other than several prototypes
Sep 16 00:21:06 <SpeedEvil> And of course there are BGA chips on it, and you can't obtain most of them.
Sep 16 00:26:01 <josvuk> Ah, what do you think, can I buy one actuall freerunner and then desolder the 4pole 2.5mm jack and solder it to the line in tp
Sep 16 00:26:29 <josvuk> to have a two channel line in
Sep 16 00:30:50 <SpeedEvil> I'm unsure - I don't know how the test points work.
Sep 16 00:31:13 <SpeedEvil> It may be easier just to use a USB soundcard - they are $10ish, and have very small boards.
Sep 16 00:31:28 <SpeedEvil> (the $3 ones are mic in mono only and 12 bit)
Sep 16 00:34:59 <josvuk> Hm, I'm not sure but I think a resolution of 12 bit is to small , HAM reciever have a great dynamic range -120db to 10db :-(
Sep 16 00:35:23 <josvuk> so the ADC shoul have at least 24bit and 96k/s
Sep 16 00:35:31 <SpeedEvil> Err - no
Sep 16 00:35:37 <SpeedEvil> That's the range of the ADC
Sep 16 00:35:52 <SpeedEvil> The usable dynamic range on the audio is nowhere near that
Sep 16 00:35:55 <SpeedEvil> AGC, not ADC
**** ENDING LOGGING AT Fri Sep 16 02:59:56 2011