Re: [Openbts-discuss] Not Tuning at 1800

[Andrew B. <and...@gm...>]

Hello,

Yes, the hardware has all the changes recommended in this link:
http://gnuradio.org/redmine/wiki/1/OpenBTSClockModifications

All software patched as recommended, all hardware modded as recommended...
and now neither 850, 900, 1800 or 1900 work (850 used to).

It uses to run fine on the 850 band, at 52M, so I assume all my hardware is
working ok.

Very confused. This thing really needs better documentation. Its extremely
fragmented indeed.

Any other ideas at all?

Cheers,

Andrew Barlow


On 15 November 2010 17:20, Harvind Samra <hs...@ke...> wrote:

> Just to make sure, you've also made the necessary hardware changes to
> the USRP and have a 52MHz oscillator?
>
> --- Harvind
>
> On Mon, 2010-11-15 at 11:01 +0000, Andrew Barlow wrote:
> > Hello,
> >
> > I am using an USRP from Ettus with Flex 1800 Rx and Flex 1800 Tx
> > boards.
> >
> > I'm also running latest GNU-Radio and OpenBTS software compiled by
> > hand. I also made the changes to the source code for the timing as
> > suggest here:
> > http://gnuradio.org/redmine/wiki/1/OpenBTSClockModifications
> >
> > So, OpenBTS runs happily... and I can even connect mobiles to it when
> > running 52M transceiver mode with the GSM.Band setting at 850.
> >
> > However, if I put it on 900 or 1800... it doesn't work at all.
> >
> > Here is the output on the 850 band:
> >
> > Starting the system...
> > 1289818145.4508 FORCE 139746679404320 Logger.cpp:109:gSetLogFile:
> > setting log path to test.out
> > 1289818145.4512 ALARM 139746679404320 OpenBTS.cpp:129:main: OpenBTS
> > starting, ver 2.6.0Mamou build date Nov 11 2010
> > 1289818145.4552 FORCE 140633529018144 Logger.cpp:194:gLogInit: Setting
> > initial global logging level to NOTICE
> > 1289818145.4553 FORCE 140633529018144 Logger.cpp:109:gSetLogFile:
> > setting log path to test.TRX.out
> > 1289818150.866954 139746679404320:
> >
> >
> >
> > And here is the output on the 900 or 1800 band:
> >
> > Starting the system...
> > 1289818215.1912 FORCE 139866064344864 Logger.cpp:109:gSetLogFile:
> > setting log path to test.out
> > 1289818215.1917 ALARM 139866064344864 OpenBTS.cpp:129:main: OpenBTS
> > starting, ver 2.6.0Mamou build date Nov 11 2010
> > 1289818215.1956 FORCE 140553740953376 Logger.cpp:194:gLogInit: Setting
> > initial global logging level to NOTICE
> > 1289818215.1958 FORCE 140553740953376 Logger.cpp:109:gSetLogFile:
> > setting log path to test.TRX.out
> > 1289818220.2201 ALARM 140553741047568
> > Transceiver.cpp:551:driveControl: TX failed to tune
> > 1289818220.2206 ALARM 139866064344864 TRXManager.cpp:349:tune: TXTUNE
> > failed with status 1
> > 1289818220.744882 139866064344864:
> >
> >
> > Something obviously isn't working. OpenBTS DOES stay open but mobiles
> > cannot connect. I even tried the flashing technique using db-eeprom
> > (forget the exact name) the 900 and 1800 but nothing worked.
> >
> > Does anyone have any ideas as to what this might be?
> >
> > Thank-you kindly.
> >
> > Andrew Barlow
> >
> >
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