Hi,
First of all, the USRP radios are kind of experimental radios, using them for
real ham radio operation on antennas will require filters and PAs. "Out of the
box" it will only be some proof of concept when you create a ham radio
application with it.
All 50 ohms, no limitations other than u
Be careful, an antenna filters less than one would expect :)
Ralph.
From: discuss-gnuradio-bounces+ralph=schmid@gnu.org
[mailto:discuss-gnuradio-bounces+ralph=schmid@gnu.org] On Behalf Of Marcus
Müller
Sent: Thursday, December 24, 2015 16:21
To: discuss-gnuradio@gnu.org
Subject: R
On 25/12/15 15:18, Ralph A. Schmid, dk5ras wrote:
> Hi,
>
> First of all, the USRP radios are kind of experimental radios, using them for
> real ham radio operation on antennas will require filters and PAs. "Out of
> the box" it will only be some proof of concept when you create a ham radio
>
Broadcast radio & TV transmitters, police & fire repeaters, and others have
potent signals. If your system does not attenuate them, by using low-pass,
high-pass, or band-pass filters, the peak voltage at your analog to digital
converter may at times exceed "full scale". The resulting non-linea
Hi Ralph,
On 12/25/2015 03:20 PM, Ralph A. Schmid, dk5ras wrote:
>
> Be careful, an antenna filters less than one would expect :)
>
I do agree; but:
For example, if you have bad luck, the B2x0 might produce a third
harmonic of the oscillator it generates to mix up your signal; e.g. if
you tune to
On 12/25/2015 09:18 AM, Ralph A. Schmid, dk5ras wrote:
Hi,
First of all, the USRP radios are kind of experimental radios, using them for real ham
radio operation on antennas will require filters and PAs. "Out of the box" it
will only be some proof of concept when you create a ham radio applica
The Ettus web site has a page about USB chipsets[1], suggesting some of
them can't handle the continuous streaming for SDR
Is this information up to date, can anybody else comment on this?
I'm looking at using a HP Z800 workstation which has quite a lot of
grunt but only has USB 2 built-in, HP
On 25/12/15 19:44, Marcus D. Leech wrote:
> On 12/25/2015 09:18 AM, Ralph A. Schmid, dk5ras wrote:
>> Hi,
>>
>> First of all, the USRP radios are kind of experimental radios, using
>> them for real ham radio operation on antennas will require filters and
>> PAs. "Out of the box" it will only be s
Hi,
yes, what Ralph said is very true. The real strength of the USRP series
is it's high sampling speed. I own the USRP2, which is already around 5
years old and already did 100 MS per second, but it was rather expensive
at that time.
You can get much cheaper SDR hardware today such as the RedPi
Hi Daniel,
On 12/25/2015 09:51 PM, Daniel Pocock wrote:
>
> On 25/12/15 19:44, Marcus D. Leech wrote:
>> On 12/25/2015 09:18 AM, Ralph A. Schmid, dk5ras wrote:
>>> Hi,
>>>
>>> First of all, the USRP radios are kind of experimental radios, using
>>> them for real ham radio operation on antennas wil
The Ettus B200 will be the preferred ground station for AMSAT's Phase 4
satellite.
https://github.com/phase4ground/documents/blob/master/Papers_and_Presentations/AMSAT_DSP_Hardware_Paper_by_Mike_Parker.pdf
https://github.com/phase4ground/documents/
https://github.com/phase4ground/satellite_gro
Hi Daniel,
wow, you don't start small.
Really, for audio rate signals, your average laptop or desktop computer
will do. If you want to do awesome signal processing, the more CPU the
better, but don't go out and buy a new workstation assuming you'll need it.
Regarding your card: PCIe x1 is much fa
Hi All:
Further info:
The issue seems to be with the single quote in the the .grc’s directory path,
“Kevin’s Programs”.
Looks like there needs to be an escape added before single quotes in file names
or directory paths.
If I move the subject .grc to another directory (i.e. not including “Kevi
Hi Kevin,
great debugging!
The most likely place to look in is gnuradio/grc/python/Generator.py and
the .tmpl file in that same directory.
I'm not overly experienced with that, but maybe pdb is right for you.
A quick grep showed that the string "No closing quotation" doesn't occur
in GNU Radio's
Hi,
> Remember the Nyquist Theorem, which tells us that you can sample 1,6 MHz
> wir 3,2 MSPS, and common amateur radio signals are generally far smaller
> than 1,6 MHz. So the RTLSDR stick will probably be sufficient for most
> of your experiments.
Just a small correction, the samples from the
Henry,
Yes, the data stream will be interleaved I and Q values.
Happy Holidays,
Nate
> On Dec 25, 2015, at 4:33 PM, Henry Barton wrote:
>
> You're right, Nate, the sampling rate equals bandwidth on SDR's. Does complex
> sampling mean using I and Q?
>
> Sent from Windows Mail
>
> From: Nat
There's nothing 'wrong', but PyBOMBS does something else.
- The standard packagers can only install what someone has packaged
(usually quite outdated), and most of them only install to the system
- Installing out-of-tree modules doesn't work except for some, on some
packagers
- You often want to
17 matches
Mail list logo
