Re: [Discuss-gnuradio] GRC selector audio sink error

2011-01-06 Thread Alexandru Csete
On Thu, Jan 6, 2011 at 6:51 AM, Phelps Williams wrote: > I put together a simple example of a selector which is controlled by a > variable chooser to toggle between two different frequencies.  These two > frequencies are dumped to an audio sink.  This example works fine (and I > hear the default t

Re: [Discuss-gnuradio] Highest Datarates with GNURadio

2011-01-06 Thread Tom Rondeau
On Tue, Jan 4, 2011 at 6:48 PM, wrote: > > Hi All, > > I started working with GNURadio a few months ago as a platform for use with > a Visual Light Communication front end.  I've had some good success with the > basic benchmark testing and implementation of a few basic tests with GRC, > but I'm c

Re: [Discuss-gnuradio] QA tests for FIR filters

2011-01-06 Thread Tom Rondeau
On Wed, Jan 5, 2011 at 11:25 AM, Philip Balister wrote: > I'm adding a armv7 NEON implementation to gnuradio. I've got the basic code > in place and am testing the qa code before starting the asm work. I'm seeing > failures from the test_filter program, but it is not clear exactly what the > probl

[Discuss-gnuradio] GNU Stow and make install (DESTDIR)

2011-01-06 Thread Patrick Strasser
Hello! I tried to install GNU Radio with GNU Stow. I'd like to have several versions of GNU Radio that I can switch betwenn without rebuild. Stow seems to help much in that scenario. And it does a clean uninstall even if the build tree has changed since build. How install does _not_ work: ===

Re: [Discuss-gnuradio] GNU Stow and make install (DESTDIR)

2011-01-06 Thread Tom Rondeau
On Thu, Jan 6, 2011 at 1:51 PM, Patrick Strasser wrote: > Hello! > > I tried to install GNU Radio with GNU Stow. I'd like to have several > versions of GNU Radio that I can switch betwenn without rebuild. Stow > seems to help much in that scenario. And it does a clean uninstall even > if the build

Re: [Discuss-gnuradio] GNU Stow and make install (DESTDIR)

2011-01-06 Thread Alexandru Csete
Hi Patrick, I manage multiple versions of GNU Radio manually by simply installing each under its own prefix and having a symbolic link "current" point to whichever version I want to use. It is really easy: 1. Update local repository using "git pull" 2. Get unique version for the snapshot "git des

[Discuss-gnuradio] Re: GNU Stow and make install (DESTDIR)

2011-01-06 Thread Patrick Strasser
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 schrieb Alexandru Csete on 2011-01-06 21:09: > Hi Patrick, > > I manage multiple versions of GNU Radio manually by simply installing > each under its own prefix and having a symbolic link "current" point > to whichever version I want to use. It is rea

Re: [Discuss-gnuradio] how to make 8 bits sample works

2011-01-06 Thread Nick Foster
On Thu, 2011-01-06 at 15:08 +0800, James Jordan wrote: > Hi all, I want to let my application work on 8 bit sample mode. > I have test and checked that 8 bit resolution sample can meet my > application's accurate need. > I test my application that run it on 16 bit sample and shift the read > data r

Re: [Discuss-gnuradio] Question about the HBF in the DDC

2011-01-06 Thread Matt Ettus
The passband of the HBF scales with your data rate. The bandwidth is about 70% of the data rate. Matt On 01/05/2011 08:03 AM, peng senl wrote: Hello, I have another question about the bandwidth of the HBF. For a wide band incoming signal, let's say 20MHz, can we still use this HBF to fil

Re: [Discuss-gnuradio] Re: GNU Stow and make install (DESTDIR)

2011-01-06 Thread Alexandru Csete
On Thu, Jan 6, 2011 at 9:44 PM, Patrick Strasser wrote: > -BEGIN PGP SIGNED MESSAGE- > Hash: SHA1 > > schrieb Alexandru Csete on 2011-01-06 21:09: >> Hi Patrick, >> >> I manage multiple versions of GNU Radio manually by simply installing >> each under its own prefix and having a symbolic l

[Discuss-gnuradio] USRP1 Clock drift

2011-01-06 Thread Matt Robert
Hi Guys, I ran Kalibrate against my pair of USRP1's using GSM900 towers (around 940MHz) and found my first unit to me 5kHz off and the second was 13kHz off. Is this within limits for the built in oscillator? I have been using them to transmit P25 frames around 435Mhz and found that my commercial

Re: [Discuss-gnuradio] USRP1 Clock drift

2011-01-06 Thread Nick Foster
On Fri, 2011-01-07 at 10:01 +1100, Matt Robert wrote: > Hi Guys, > > I ran Kalibrate against my pair of USRP1's using GSM900 towers (around > 940MHz) and found my first unit to me 5kHz off and the second was 13kHz off. > > Is this within limits for the built in oscillator? I have been using > the

Re: [Discuss-gnuradio] Channel estimate block

2011-01-06 Thread Tom Rondeau
2011/1/5 intermilan : > > > > hi all: >     Is there any block about the channel estimate? If there is a channel > estimate block ,please tell me the exactly position(under which folder). > Thank you ! Not really. You might find something useful out of the cma_equalizer_cc (in filter) or the

Re: [Discuss-gnuradio] USRP1 Clock drift

2011-01-06 Thread Peter F Bradshaw
Hi Matt; Is it possible to include in your application a monitor which would receive a transmission which you could use as a reference in order to correct your transmitter's local oscillator? It seems to me that this would be a better solution to your problem than modifying the hardware in order t

Re: [Discuss-gnuradio] how to make 8 bits sample works

2011-01-06 Thread James Jordan
I have fix the problem which is my application bug. On Fri, Jan 7, 2011 at 4:55 AM, Nick Foster wrote: > On Thu, 2011-01-06 at 15:08 +0800, James Jordan wrote: > > Hi all, I want to let my application work on 8 bit sample mode. > > I have test and checked that 8 bit resolution sample can meet m