I have a couple of old USRP1 and B100 boards that I am trying to revive. My
question is,
how do I burn a startup code to EEPROM of:
1. USRP1
2. B100
3. RFX1800 ?
Does any of the UHD utils allow to dump all the contents of my old EEPROMS bit
by bit to a file?
Rob
Hi, I have an RFX1800 board with modifications allowing it to work in 900MHz and 1800MHz band.
What I find annoying is that if I want to use it in both bands, each time I have to reprogram EEPROM.
Life would be a lot easier if I had one driver that tunes the board in the whole freq range 750-2100
Hi, I run B100 with OpenBTS. I thought the reconfigurable clock on B100 board would run with OpenBTS at 52MHz but I actually measure the sampling clock as 64MHz.
So, where is the resampling done? Is the driver Transceiver52MHz used with B100 or not? Can someone shine some light on how it actually
does the resampling happen? Or, am I wrong thinking that OpenBTS uses Transceiver52MHz ? Where is the UHD in this chain ?
Regards, Robert
Gesendet: Dienstag, 21. Januar 2014 um 02:28 Uhr
Von: "Ben Hilburn"
An: "Robert Light"
Cc: "GNURadio Discussion List"
B
Hi, I am trying to install UHD and GR373 on Linux Mint13.
I follow http://code.ettus.com/redmine/ettus/projects/uhd/wiki/GNURadio_Linux
When I run:
sudo apt-get install -t precise uhd
I get an error:
uhd : Depends: libboost-all-dev but it is not going to be installed
apt-cache policy libboost-all
I try to get B200 to work with OpenBTS and I see some frequency offset in the
internal reference clock.
Does anyone know if the numbers I get from kalibrate, could cause phones not to
be able to register to OpenBTS?
What is the quickest and the cheapest way fix a problem with a clock? I
think B2
> 2 kHz offset is within tolerance for 1900 MHz. Locking to a stable 10
> MHz reference, generally an OCXO or GPSDO, is the recommended
> approach.
I applied external 10MHz reference, the best I had at hand.
Now kalibrate says I have about 200Hz offset at 900MHz and 420Hz at 1800MHz,
but phones
Hi, In case we use on-board oscillator , how is ADF4001 configured? Does CP
(pin20) output affect the VCXO_Tune ? Is it possible to control this chip
directly from the command line?
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Hi, I use B200 with OpenBTS at 900MHz. I get very low range (about 10m only)
and I identified that this is due to receive channel in B200. Changing rxgain
between 0 and 70dB makes vey little difference. Does anyone know how the
receive sensitivity of B200 compare with, for example, WBX?
What cou
Hi, How is the detection of GPSDO done in B200 ?
I see that UHD tries to detect GPSDO every time I use B200 but what is it
looking for?
How to force switching between internal, external and GPSDO clock ? I have
GPSDO installed but sometimes I want to force another clock source.
Also is there some
Is 1PPS used if I have GPSDO installed or does the B200 assume that 10MHz is
already good enough?
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Hi, Can someone help me to solve the problem below?
I have usrp1 with RFX1800. When running usrp_fft.py I get error "failed to set initial frequency" and see no spectrum. starting usrp_fft.py -R A helps at the beginning, I can see the spectrum, but any attempt to change the frequency freezes the
e problem could be this time. Looks like the usb transfer is working, but every attempt to change the settings of rfx1800 or usrp fails. The same board works fine on another computer.
Gesendet: Donnerstag, 07. November 2013 um 11:02 Uhr
Von: "Ralph A. Schmid, dk5ras"
An: "
Hi, Can anyone help me with this error ?
I do:
git checkout v3.4.2git
./configure --prefix=/home/robert/gr342 --disable-gr-qtgui --with-fusb-tech=libusb1 --enable-usrp --enable-gr-usrp --enable-gnuradio-core --disable-usrp2 --disable-volk
make works just fine
when I run make install I ge
be good to know whether I was dong something wrong or it is a bug.
It could be that it is just my ubuntu. I upgraded to 12.04 recently and already had to recover the system 3 times in the last week.
KR, Robert
Gesendet: Dienstag, 12. November 2013 um 19:36 Uhr
Von: "Ben Hilburn"
An
Hi, I have an RFX900 board and sometimes when I run usrp_fft.py and try to set frequency I get a message at the bottom of the window saying "Failed" or "Failed to set initial frequency".
The PLL chip is programmed via a shift register (SPI) and as far as I know reading from the chip is not possibl
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