Dear all,
(I'm sorry for cross-posting to several mailing lists, but it really
belongs to all of them. Please respond only to a mailing list you're
subscribed to.)
UmTRX sales start
===============
It's the Hardware Freedom Day and we're starting sales of UmTRX to
celebrate it! Now you could order it directly from Fairwaves web-shop
[1],
UmTRX is a completely open-source hardware SDR transceiver designed
for professional/industrial applications. We designed it for use with
OpenBTS software [2], but it also works well with OsmoBTS/OpenBSC [3].
UmTRX uses a UHD [4] with only minor changes to interact with a host
and thus works well with GnuRadio and other applications based on UHD.
1. http://shop.fairwaves.ru/
2. https://code.google.com/p/umtrx/wiki/RunningOpenBTS
3. http://openbsc.osmocom.org/trac/wiki/OsmoBTS
4. https://github.com/fairwaves/UHD-Fairwaves
Technical details
==============
UmTRX is an SDR transceiver inspired by USRP N series. If you worked
with USRP N you will find it familiar, but there are significant
differences which are described below as well.
* Single board with an integrated RF part.
* Optimized for industrial use and high MTBF.
* 1GbE Ethernet connectivity to a computer.
* Two full-duplex RF channels (side "A" and "B" in UHD).
* Single chip transceivers LMS6002D are used for AD/DA and RF
processing (300MHz to 3.8GHz)
* Stable reference clocks:
- 26MHz TCXO (integer multiple of GSM sample rate) with 100ppb
frequency stability.
- DAC for TCXO frequency fine tuning.
- Integrated GPS module for automatic TCXO frequency stabilization.
- External clock source is possible.
* Thermal sensors for temperature based calibration.
* 100mW @ 900MHz, 50mW @ 1800MHz RF output power.
* 8-28V DC input power supply.
* Spartan 6 LX75 FPGA.
PS Big thank you to Lime Microsystems for their excellent support of
open-source users! Check out their chips if you're planning to develop
and SDR system.
GSM specific info
==============
UmTRX was designed to be easy to use to use with OpenBTS and OsmoBTS.
So far it's the easiest way to get them up and running in your lab.
* Quad-band support without any changes
* 100-200m coverage (with an external duplexer and a small omni antenna).
* >2km coverage with an external 2W GSM repeater and a patch antenna
* Two independent TRXs (*).
* Single-ARFCN and Multi-ARFCN support.
(*) OpenBTS doesn't support the second channel on UmTRX yet. We're
working to implement this and plan to release this soon.
I also want to say thank you to our beta testers who received earlier
versions of UmTRX. Some of them even blogged about their experience :)
http://blog.shimaore.net/2013/03/umtrx.htmlhttp://genesysguru.com/blog/blog/2013/03/23/umtrx-is-alive-again/
UmTRX package contents
========================
* UmTRXv2.1, flashed and ready to use.
* Power supply, 12V/30W - http://www.phihong.com/assets/pdf/PSAC30U.pdf
* U.FL-to-SMA-F pigtail cables.
* Two small GSM antennas - one for Tx and one for Rx.
* An active GPS antenna.
* Thermal pads.
Note 1: The power supply comes without a 220V power cord. Make sure to
prepare one before you receive the UmTRX to be able to power it on
immediately. ;)
Note 2: You'll need a heatsink or a fan to prevent UmTRX from
overheating during long continuous operation. We provide thermal pads,
but you have to find a heatsink by yourself. HDD heatsinks are good
options, because UmTRX has almost the same size as an HDD.
--
Regards,
Alexander Chemeris.
CEO, Fairwaves LLC / ООО УмРадио
http://fairwaves.ru
Hello.
Could you advice me where to read more about MNCC protocol?
openbsc/openbsc/include/openbsc/mncc.h references ETSI TS 100 940 which indeed has a
lot of variables like MNCC.RECALL.IND in call control diagrams - but where are the
reference to actual protocol?
I've tried to google but got tons of unrelated junk :(
Pardon if I'm asking smth obvious or already documented. Is there some library which
will let me easily create simple tool which speaks mncc with openbsc (libmsc)?
--
best regards,
Max, http://fairwaves.ru
Hi Folks.
I have a simple and straight forward question:
in the openbsc.cfg i find a parameter "ms max power" which is set to 15
dBm (apporox 30mW) by default.
http://openbsc.osmocom.org/trac/wiki/osmo-nitb_VTY says the following:
"maximum transmit power (in dBm) to be used by MS in this BTS. This is
used in the System Information on the BCCH as well as for the MS power
level at the time a dedicated channel is activated."
My question is how low may i set ms max power level? Is 15dBm already
the lowest possible minimum or can i set it down to 1dBm if i like?
regards
Philipp
hi,
i just updated the transceiver/osmo-bts/openbsc/lcr documentation:
http://openbsc.osmocom.org/trac/wiki/network_from_scratch
the changes refer to some issues during UmTRX/Osmo-BTS workshop.
especially it describes how to setup/run a network with and without LCR.
regards,
andreas
Hi Folks.
I have a simple and straight forward question:
in the openbsc.cfg i find a parameter "ms max power" which is set to 15
dBm (apporox 30mW) by default.
http://openbsc.osmocom.org/trac/wiki/osmo-nitb_VTY says the following:
"maximum transmit power (in dBm) to be used by MS in this BTS. This is
used in the System Information on the BCCH as well as for the MS power
level at the time a dedicated channel is activated."
My question is how low may i set ms max power level? Is 15dBm already
the lowest possible minimum or can i set it down to 1dBm if i like?
regards
Philipp
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Hi All,
as I've just been made aware of by a business contact, there is a
NEWSDR'13 workshop which, among other things, has OsmocomBB and OpenBSC
on the list of topics:
http://ecewp.ece.wpi.edu/wordpress/sdr-boston/newsdr-13/call-for-papers/
Did anyone ever hear of this workshop? Did the organizers ever make
contact with us? I'm a bit surprised that somebody organizes a workshop
with "our" projects on the agenda without even sending the CfP to us.
Or maybe I just missed it?
In case somebody is submitting a paper there: Please make sure to
coordinate here in order to avoid different developers/contributors from
submitting similar/related topics.
Regards,
Harald
--
- Harald Welte <laforge(a)gnumonks.org> http://laforge.gnumonks.org/
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