I am trying to build a AM receiver by using USRP. I did setup the IF frequency to 1.43 MHz by using set_rx_freq. I was sending a 1 Khz signal 90% modulated at 1.43 MHz carrier. I should get something from the USRP output just the 1 KHz sine wave. But for some strange reason I am not getting that. I
On Tue, Dec 06, 2005 at 04:34:34PM -0800, Matt Ettus wrote:
>
> DBS small satellite dish systems often have LNB feedhorns capable of
> multiple polarizations and/or multiple bands. This is often controlled
> by changing the voltage which powers the device. However, some have a
> more complex con
Matt Ettus wrote:
DBS small satellite dish systems often have LNB feedhorns capable of
multiple polarizations and/or multiple bands. This is often controlled
by changing the voltage which powers the device. However, some have a
more complex control system involving tones in the 20kHz range if
DBS small satellite dish systems often have LNB feedhorns capable of
multiple polarizations and/or multiple bands. This is often controlled
by changing the voltage which powers the device. However, some have a
more complex control system involving tones in the 20kHz range if my
memory serves cor
> What should the data going in and out of the gr.clock_recovery_mm_ff look
> like?
Your data looks good except for the DC offset.
> I see that in gmsk2.py you remove DC offset, should the signal be varying
> +/-Vpeak equally?
Yes, the data should be symmetric about zero.
> Any requirements th
On Tue, Dec 06, 2005 at 06:23:24PM -0500, [EMAIL PROTECTED] wrote:
> Not sure if this will work but here is a screen shot of my demodulated data
> that I am trying to recover the digital signal from and inputing into
> gr.clock_recovery_mm_ff.
>
> Mike
There's probably a frequency error between t
On Tue, Dec 06, 2005 at 06:16:32PM -0500, [EMAIL PROTECTED] wrote:
> On Tue, 6 Dec 2005 14:24:43 -0800, Eric Blossom [EMAIL PROTECTED] wrote:
> > Quick answer:
> >
> > use the defaults.
> >
> > Involved answer:
> >
> > It's a Mueller and Müller (M&M) discrete-time error-tracking
> synchronize
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of
[EMAIL PROTECTED]
Sent: Wednesday, 7 December 2005 9:47 AM
To: discuss-gnuradio@gnu.org
Subject: Re: [Discuss-gnuradio] gmsk error
On Tue, 6 Dec 2005 14:24:43 -0800, Eric Blossom [EMAIL PROTECTED] wrote:
> Qui
Try http://www.superbookdeals.com/
Search by ISBN, they can ship it in a couple days. "Only" $89.
On Tue, 6 Dec 2005, [EMAIL PROTECTED] wrote:
> On Tue, 6 Dec 2005 14:24:43 -0800, Eric Blossom [EMAIL PROTECTED] wrote:
> > Quick answer:
> >
> > use the defaults.
> >
> > Involved answer:
>
On Tue, 6 Dec 2005 14:24:43 -0800, Eric Blossom [EMAIL PROTECTED] wrote:
> Quick answer:
>
> use the defaults.
>
> Involved answer:
>
> It's a Mueller and Müller (M&M) discrete-time error-tracking
synchronizer.
>
> See "Digital Communication Receivers: Synchronization, Channel
> Estimation a
On Tue, Dec 06, 2005 at 03:57:26PM -0500, [EMAIL PROTECTED] wrote:
> What are the parameters/arguments (omega, gain_omega, me, gain_mu...) used
> in gr_clock_recovery_mm_xx and how do you determine what they should be?
Quick answer:
use the defaults.
Involved answer:
It's a Mueller and MÃ
Weber, Michael J. (US SSA) wrote:
> Matt, can you elaborate on the 20MHz bandwidth figure for the Flex400
> and give some USRP application guidance? I have this "8MHz maximum
> supportable bandwidth" figure in my head which I think came from the
> sampling/decimation rates + USB2 throughput limitat
What are the parameters/arguments (omega, gain_omega, me, gain_mu...) used
in gr_clock_recovery_mm_xx and how do you determine what they should be?
I have been trying to find in the Python literature what the follow syntac
represent.
"""
...
@param omega: nominal relative freq (de
Elaine Garbarine wrote:
Hello all,
I'm involved in a project to design a hardware testbed for Multiple-input
Multiple-output systems. I was considering GNU Radio and the USRP to
accomplish this task. I was wondering if any of you have connected multiple
USRPs to build an RF system larger than
Matt, can you elaborate on the 20MHz bandwidth figure for the Flex400
and give some USRP application guidance? I have this "8MHz maximum
supportable bandwidth" figure in my head which I think came from the
sampling/decimation rates + USB2 throughput limitation discussed in the
USRP documentation..?
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