osmocom-sdr

osmocom-sdr@lists.osmocom.org

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906 discussions

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06 Feb '24

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Does anyone from the community want the airprobe.org domain?
by Harald Welte 24 Jan '24

24 Jan '24

Hi all, I was approached by the person currently holding the [unused] airprobe.org domain name. I guess it was at some point registered and intended to be used for the project (back in the pre-osmocom days). As far as I know it was never actually used for that. So the question is now if anyone wants to get that domain transferred in order to do something useful with it, or whether the current registrant should simply let it expire? Regards, Harald -- - Harald Welte <laforge(a)osmocom.org> https://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)

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Cheap RTL2832U / FC0012 gives "No supported tuner found", but has I2C devices
by Nick Burch 05 Dec '23

05 Dec '23

Hi All I bought a cheap DVB-T stick that was supposed to be a RTL2832U with a FC0012 tuner with RTL-SDR support. As might have been expected given the price, it doesn't work. The various rtl_ tools all report "No supported tuner found", eg rtl_eeprom gives: > Found 1 device(s): > 0: Generic RTL2832U OEM > > Using device 0: Generic RTL2832U OEM > No supported tuner found > Enabled direct sampling mode, input 1 > > Current configuration: > __________________________________________ > Vendor ID: 0x0bda > Product ID: 0x2838 > Manufacturer: Realtek > Product: RTL2838UHIDIR > Serial number: 00000001 > Serial number enabled: yes > IR endpoint enabled: yes > Remote wakeup enabled: no > __________________________________________ The vendor did give me a full refund suspiciously quickly, so clearly the lack of advertised RTL-SDR compatibility is well known to them! I then took the cover off, and it does have a chip that's labelled RTL2832U, plus another similar sized one I can't read the label of. After a bit of searching, I found this old post with a patch to list all the I2C devices: https://www.mail-archive.com/osmocom-sdr@lists.osmocom.org/msg00454.html That reports: > I2C devices found: > 20 a0 a2 So there is something working there, but I'm not sure if it's enough... Is there any hope for this stick? And if so, what would my next steps be? Thanks Nick

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Binary packages: changes in supported distributions
by Oliver Smith 05 Dec '23

05 Dec '23

Hello various Osmocom mailing lists, the official Osmocom binary packages will not be built anymore for the following distributions starting at 2024-02: * Raspberry Pi OS 64-bit (use Debian_12 etc. instead) * Ubuntu 23.04 (Ubuntu 23.10 and LTS 20.04/22.04 feeds are available) * openSUSE 15.4 (openSUSE Tumbleweed feed is available) * Debian Testing (Debian Unstable and 12-10 feeds are available) For Raspberry Pi OS 64-bit users, make sure to adjust your /etc/apt/sources.list.d as described here to switch to a Debian aarch64 feed: https://osmocom.org/projects/cellular-infrastructure/wiki/Latest_Builds See the new linux distributions article for information on how long we plan to keep building packages for each distribution: https://osmocom.org/projects/cellular-infrastructure/wiki/Linux_distributio… Let me know if you have questions. Best regards, Oliver -- - Oliver Smith <osmith(a)sysmocom.de> https://www.sysmocom.de/ ======================================================================= * sysmocom - systems for mobile communications GmbH * Alt-Moabit 93 * 10559 Berlin, Germany * Sitz / Registered office: Berlin, HRB 134158 B * Geschaeftsfuehrer / Managing Director: Harald Welte

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Fix MSYS2 MinGW64 build
by Ruslan Migirov 22 Nov '23

22 Nov '23

can you review this patch?

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gr-osmosdr: Multiple Airspy devices
by AsciiWolf 03 Nov '23

03 Nov '23

Hello, Is there any chance the following patch could be reviewed and/or merged into upstream gr-osmosdr? It allow multiple Airspy devices to be used (which is sadly not possible without the patch). The patch is already used in the downstream gr-osmosdr package in Fedora for last two years and seems to work without issues. https://osmocom.org/issues/5144#note-4 Thanks! Regards, Daniel

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rtl-sdr: New release
by AsciiWolf 02 Nov '23

02 Nov '23

Hello, Please, consider doing a new tag/release of rtl-sdr. The last tagged version is from 2018 and there were many changes since then including the recently added RTL-SDR V4 dongle support. Thanks! Regards, Daniel

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MS9120 USB VGA dongle
by Niklas Cathor 02 Nov '23

02 Nov '23

After seeing the osmo-fl2k[1] project, I've bought a USB VGA dongle, hoping it would contain a FL2000. The model I've bought looks identical (from the outside) to the black one on the picture. Unfortunately it contains a different chip: a Macrosilicon MS9120. There is not a lot of information about this chip, the manufacturer does not even publish a datasheet (I've sent them an email to ask for one, but don't have high hopes). What I've found so far is: - someone's reverse-engineering attempt of the android driver[2] - a bit of python code to read & write the chip's memory[3] The second thing is for a different chip by the same manufacturer, but it seems to work with my device as well. So, I was wondering if anyone here has already attempted to re-purpose this chip as a transmitter :) cheers, - niklas [1] https://osmocom.org/projects/osmo-fl2k/wiki [2] https://github.com/animaone/macrosilicon_reverse_engineering_journey/ [3] https://github.com/hwti/ms210x-tools

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gr-osmosdr: New release
by AsciiWolf 02 Nov '23

02 Nov '23

gr-osmosdr: New release Hello, Please, consider doing a new tag/release of gr-osmosdr. The last tagged version is from 2022 and there were multiple changes since then including the recently added RTL-SDR V4 dongle support. Thanks! Regards, Daniel

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[PATCH] RTL-SDR Blog V4 Upconverter GPIO Switch
by Carl Laufer 20 Sep '23

20 Sep '23

In future blog v4 production batches (out in several months time), it will be possible to turn off the upconverter when tuned outside of the HF bands. Please add the code to control the GPIOs to turn off the upconverter when it is not in use. diff --git a/src/tuner_r82xx.c b/src/tuner_r82xx.c index 1510fc3..38d4802 100644 --- a/src/tuner_r82xx.c +++ b/src/tuner_r82xx.c @@ -1151,6 +1151,12 @@ int r82xx_set_freq(struct r82xx_priv *priv, uint32_t freq) cable_2_in = (band == HF) ? 0x08 : 0x00; rc = r82xx_write_reg_mask(priv, 0x06, cable_2_in, 0x08); + if (rc < 0) + goto err; + + /* Control upconverter GPIO switch on newer batches */ + rc = rtlsdr_set_bias_tee_gpio(priv->rtl_dev, 5, !cable_2_in); + if (rc < 0) goto err; Regards, Carl

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