Re: [Discuss-gnuradio] UCLA ZigBee PHY 64 chip-sequences

Thanks for the reply! Any other suggestions? I'm trying to change the UCLA ZigBee PHY to do spreading and despreading using a table of 16 64-chip-sequences instead of the 16 32-chip sequences. The files I have edited are listed below. Now, as it is still not working, I'm looking for hints, s

Re: [Discuss-gnuradio] Build failing, any ideas?

On Mon, Aug 16, 2010 at 01:18:25PM -0700, Eric Blossom wrote: > The bug is fixed in the master, maint and next git branches. > Also, there shouldn't be a need to specify the --with-boost-thread and > --with-boost-program-options options. Thanks a lot, for me it still needs the configure line, tho

[Discuss-gnuradio] How to bypass the ISM band filter on the RFX900?

Hello, My current application needs to work on ISM band, and there is an ISM band filter on RFX900, how to remove or bypass the ISM band filter on the RFX900? Thanks Zhen ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists

Re: [Discuss-gnuradio] How to bypass the ISM band filter on the RFX900?

http://www.google.com/search?q=inurl%3Adiscuss-gnuradio+disable+ism+filter "The filter affects both TX and RX, but not the auxiliary RX path (RX2). If you just want to receive, use the 2nd SMA port and make sure to set that in the software. If you want to bypass the filter for transmit, you will n

Re: [Discuss-gnuradio] Changing external reference frequency with USRP2...

On 08/16/2010 09:22 PM, Ian Holland wrote: Please disregard my last. I must have got something wrong in my testing. It now compiles, but it seems I need to use txrx_xcvr.bin instead of txrx.bin with the latest git trunk. Please correct me if this is wrong (note I have XCVR2450 as my daughterboard

[Discuss-gnuradio] External clock source Info?

Hi All; It seems that 52MHz /64MHz precision clock references are like hen's teeth, so I'm working on a design. What I need to know is what sort of level is the USRP1 looking for ? Is it 3.3V CMOS ? Once I get the design working, I'll make them available at a reasonable price J Bill

Re: [Discuss-gnuradio] Helper script to automatically add blocks

thanks for the contribution Martin :) I have some tools I could add to it myself. I think "devtools" was the right thing to do. Hopefully several people will contribute other tools to it. I will move it to the top of the Projects page. On Mon, Aug 16, 2010 at 5:44 AM, Martin Braun wrote: > H

Re: [Discuss-gnuradio] External clock source Info?

On Aug 17, 2010, at 2:24 PM, William Pretty Security Inc wrote: > It seems that 52MHz /64MHz precision clock references are like hen’s teeth, > so I’m working on a design. > What I need to know is what sort of level is the USRP1 looking for ? Is it > 3.3V CMOS ? > > Once I get the design worki

[Discuss-gnuradio] usrp2 master clock modifications

Hi, I tought I'd share some experiences with running the usrp2 system clock with something else than 100 MHz (so I can google it when I forget). Matt suggested that I could remove the 100 MHz oscillator and input my own external clock instead. The VCTCXO was easy to remove, and I put a 1 Vpp sam

Re: [Discuss-gnuradio] Helper script to automatically add blocks

On Tue, Aug 17, 2010 at 11:56:20AM -0700, George Nychis wrote: > I have some tools I could add to it myself. I think "devtools" was the > right thing to do. Hopefully several people will contribute other tools to > it. I will move it to the top of the Projects page. Another interesting thing i

Re: [Discuss-gnuradio] USRP spike

On 08/17/2010 02:01 AM, Vincent W wrote: > As evidence for the other kind of spikes, the ones that follow you around, > please see the attached pictures, centered around frequencies of 1134 and > 1135MHz. These are the spikes that follow the centre frequency around. > > The problem around 100MHz i

[Discuss-gnuradio] OCXO ' s

More Info on the parts I plan to use: At this point I have two possible fixed frequency parts: Silicon Labs Si590 series: http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail &name=590PC-BDG-ND Pletronics

Re: [Discuss-gnuradio] External clock source Info?

On Tue, Aug 17, 2010 at 3:10 PM, Mark J. Blair wrote: > > On Aug 17, 2010, at 2:24 PM, William Pretty Security Inc wrote: >> It seems that 52MHz /64MHz precision clock references are like hen’s teeth, >> so I’m working on a design. >> What I need to know is what sort of level is the USRP1 looking

Re: [Discuss-gnuradio] External clock source Info?

On Aug 17, 2010, at 2:24 PM, Gregory Maxwell wrote: > I'd also like to echo the 10MHz comment. GPSDOs Clocks with excellent > long term stability show up at fairly low prices on ebay all the time > (excess from cell site deployments, I assume). I have a couple of > them. What they don't usuall

Re: [Discuss-gnuradio] OCXO ' s

On Aug 17, 2010, at 5:07 PM, William Pretty Security Inc wrote: > More Info on the parts I plan to use: > At this point I have two possible fixed frequency parts: > > Silicon Labs Si590 series: > http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=590PC-BDG-ND > Pletronics OHM4 Ser

RE: [Discuss-gnuradio] Changing external reference frequency with USRP2...

Hi Matt Thanks so much for your help. I tried your latest suggestion, and this gets my frequency offset between Tx and Rx down to a mere 1 Hz. This is much better and should make my testing considerably simpler. Cheers Ian. -Original Message- From: Matt Ettus [mailto:m...@ettus.com] S

Re: [Discuss-gnuradio] External clock source Info?

Gregory Maxwell wrote: On Tue, Aug 17, 2010 at 3:10 PM, Mark J. Blair wrote: On Aug 17, 2010, at 2:24 PM, William Pretty Security Inc wrote: It seems that 52MHz /64MHz precision clock references are like hen’s teeth, so I’m working on a design. What I need to know is what sort of leve