121 messages in org.openmoko.lists.hardwareRe: GSM-noise "buzz" issue| From | Sent On | Attachments |
|---|---|---|
| Joerg Reisenweber | Aug 5, 2008 8:23 pm | |
| Joerg Reisenweber | Aug 5, 2008 8:26 pm | |
| Joerg Reisenweber | Aug 11, 2008 5:06 am | |
| Ole Kliemann | Aug 11, 2008 9:39 am | |
| Joerg Reisenweber | Aug 12, 2008 3:54 am | |
| Candy Chou | Aug 12, 2008 4:06 am | |
| Andy Green | Aug 12, 2008 4:35 am | |
| Candy Chou | Aug 12, 2008 4:55 am | |
| steve | Aug 12, 2008 9:27 am | |
| Joerg Reisenweber | Aug 26, 2008 5:22 am | |
| Torsten Sievers | Sep 11, 2008 4:35 am | |
| Angus Ainslie | Sep 11, 2008 6:03 pm | |
| Angus Ainslie | Sep 11, 2008 6:12 pm | |
| Andy Green | Sep 12, 2008 12:27 am | |
| Joerg Reisenweber | Sep 12, 2008 6:19 pm | |
| Joerg Reisenweber | Sep 12, 2008 7:32 pm | |
| Angus Ainslie | Sep 15, 2008 8:15 pm | |
| Andy Green | Sep 16, 2008 6:23 am | |
| Angus Ainslie | Sep 16, 2008 7:24 am | |
| Joerg Reisenweber | Sep 16, 2008 2:28 pm | |
| Andy Green | Sep 17, 2008 1:41 am | |
| Joerg Reisenweber | Sep 17, 2008 8:27 am | |
| Andy Green | Sep 17, 2008 8:55 am | |
| Joerg Reisenweber | Sep 17, 2008 10:11 am | |
| Angus Ainslie | Sep 17, 2008 12:00 pm | |
| Andrew Bruno | Sep 17, 2008 1:04 pm | |
| Werner Almesberger | Sep 17, 2008 3:04 pm | |
| Joerg Reisenweber | Sep 17, 2008 5:39 pm | |
| Werner Almesberger | Sep 17, 2008 9:27 pm | |
| Torsten Sievers | Sep 17, 2008 11:00 pm | |
| Uwe Klein | Sep 18, 2008 12:54 am | |
| Andy Green | Sep 18, 2008 1:51 am | |
| Joerg Reisenweber | Sep 19, 2008 10:14 am | |
| Werner Almesberger | Sep 19, 2008 10:58 am | |
| Joerg Reisenweber | Sep 19, 2008 11:17 am | |
| Joerg Reisenweber | Sep 19, 2008 11:35 am | |
| Werner Almesberger | Sep 19, 2008 12:41 pm | |
| Florian Zeitz | Sep 19, 2008 1:23 pm | |
| Werner Almesberger | Sep 19, 2008 1:56 pm | |
| Esben Stien | Sep 19, 2008 2:22 pm | |
| Joerg Reisenweber | Sep 20, 2008 8:33 am | |
| Andy Green | Sep 20, 2008 8:35 am | |
| Joerg Reisenweber | Sep 20, 2008 9:00 am | |
| Andy Green | Sep 20, 2008 9:07 am | |
| Werner Almesberger | Sep 20, 2008 1:13 pm | |
| Werner Almesberger | Sep 20, 2008 1:19 pm | |
| Werner Almesberger | Sep 20, 2008 1:31 pm | |
| Joerg Reisenweber | Sep 20, 2008 2:15 pm | |
| Werner Almesberger | Sep 20, 2008 2:45 pm | |
| Joerg Reisenweber | Sep 20, 2008 3:10 pm | |
| Werner Almesberger | Sep 20, 2008 5:54 pm | |
| Andy Green | Sep 21, 2008 1:13 am | |
| Uwe Klein | Sep 21, 2008 1:47 am | |
| Andy Green | Sep 21, 2008 2:10 am | |
| Uwe Klein | Sep 21, 2008 2:27 am | |
| Andy Green | Sep 21, 2008 2:41 am | |
| Werner Almesberger | Sep 21, 2008 6:29 am | |
| Uwe Klein | Sep 21, 2008 6:36 am | |
| Werner Almesberger | Sep 21, 2008 7:18 am | |
| Werner Almesberger | Sep 21, 2008 7:22 am | |
| Joerg Reisenweber | Sep 21, 2008 3:18 pm | |
| Joerg Reisenweber | Sep 21, 2008 3:55 pm | |
| Joerg Reisenweber | Sep 21, 2008 4:33 pm | |
| Joerg Reisenweber | Sep 21, 2008 4:42 pm | |
| Werner Almesberger | Sep 21, 2008 4:51 pm | |
| Joerg Reisenweber | Sep 21, 2008 6:08 pm | |
| Torsten Sievers | Sep 21, 2008 11:32 pm | |
| Andy Green | Sep 22, 2008 2:34 am | |
| Andy Green | Sep 22, 2008 2:46 am | |
| Uwe Klein | Sep 22, 2008 5:37 am | |
| Werner Almesberger | Sep 22, 2008 5:41 am | |
| Andy Green | Sep 22, 2008 5:47 am | |
| Uwe Klein | Sep 22, 2008 5:52 am | |
| Joerg Reisenweber | Sep 22, 2008 6:34 am | |
| Uwe Klein | Sep 22, 2008 6:54 am | |
| Andy Green | Sep 22, 2008 7:03 am | |
| Andy Green | Sep 22, 2008 7:10 am | |
| Andy Green | Sep 22, 2008 7:21 am | |
| Uwe Klein | Sep 22, 2008 8:12 am | |
| Joerg Reisenweber | Sep 22, 2008 9:04 am | |
| Joerg Reisenweber | Sep 22, 2008 9:14 am | |
| Uwe Klein | Sep 22, 2008 9:18 am | |
| Joerg Reisenweber | Sep 22, 2008 9:48 am | |
| Andy Green | Sep 22, 2008 9:49 am | |
| Joerg Reisenweber | Sep 22, 2008 11:09 am | |
| Werner Almesberger | Sep 22, 2008 3:41 pm | |
| 35 later messages | ||
| Subject: | Re: GSM-noise "buzz" issue | |
|---|---|---|
| From: | Joerg Reisenweber (joe...@openmoko.org) | |
| Date: | Sep 19, 2008 11:35:13 am | |
| List: | org.openmoko.lists.hardware | |
Am Do 18. September 2008 schrieb Uwe Klein:
On 9/18/08, Torsten Sievers <open...@torsten-sievers.de> wrote:
@Jörg: where does your european lab sits? Does it help that i send you my FR with my german sim-card and the buzz-issue ?
Thanks, but I tried all kinds of SIM-cards. I'm just located at an urban environment, where obviously even E1 improved their network during the last few years to a point I simply can't get noise. I already explained buzz is dependent on network, not on particular device or SIM.
(My freerunner doesn't seem to have this problem). I have access to a "reasonably" well instrumented lab near Goettingen. ( We do remote sensing microwave spectrometers / digital backends )
I would be willing to spend a couple of hours for gettting some information out of this.
Well, setting up a recording path from handset mic via arecord and ssh to outside (=PC, aplay), so you actually can "hear" (and analyze) the buzz, and then shoot some 800~1900MHz on device under test, to get an idea of actual sensitivity to EMI, this might help a lot. A second plot showing all the radiation peaks of FR itself also would be interesting (not for buzz issue though, but maybe for GPS, and recamping)
cheers jOERG
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