I'm using the 'Lowpass Filter Block'. Is there a way to get the average
execution time for that block? Per sample or per 1000 samples, for
example? The sample rate is 2 MHz.
thanks
parate message
to var block and it works fine. For your situation, writing a "message
multiplexer" is by far the best idea I can think. BTW, my project address is
https://github.com/Bob0111/HackRF-mutiple-freqeuncy-FM-transmitter if you have
any interest, welcome to view that.
Bob
Hello everyone,
Now I'm using python embedded module and message system trying to change the
value of a variable. And I use the self.message_port_pub function. But the
function requires the first one to be the output port, and the second one must
be a pmt variable. But when I just do that conver
can I achieve both of them? I search the
Internet but still couldn't figure out how to achieve that goal. And in the
attachment is the grc file.
Best Regards,
Bob
music_tx_hackrf.grc
Description: application/gnuradio-grc
it have any problems using the non-ports
solution.
Thank you Michael for your help!
-Bob
> On December 29, 2019 at 11:36 PM Michael Dickens
> wrote:
>
> Hi Bob - I can't help you with the Brew issue ... so what I'm wondering
> is if you've looked int
I am not an expert in OS X. I likely am missing an easy work around for a
gnuradio install missing file problem.
I tried brew edit gnuradio, but there is no mention in the that script of
icu4c, which is what is failing when dependencies are being addressed after I
run brew install gnuradio:
D
monitor window. If a specific string is not
observed, a signal will be sent to switch the relay for a defined
period. The goal is some sort of automated antenna polarity switching
depending on what is (or is not) received.
Suggestions welcome.
Thanks,
Bob
N6RFM
Martin thanks for you reply.
I was looking at things wrongly. Now, I ask the scheduler for atleast 1000
samples at a time, using set_output_multiple() and I adjust the tag value
if overflow occurs.Thanks again for correction.
--
Bob
> If you change the size of a tagged stream without chang
Thanks Martin,
I know the packet size a priori but samples may drop due to overflows while
flowgraph is running and could result in different packet size. Is there a
way to solve this issue while using tagged_stream_block?
--
Bob
> It'll crash. If you know your packet size a priori,
that processes exactly only 1000 samples, one
packet, in a call to work. And the packets start from a specific time for
example when the rx_time of the sample is mid of any second.
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https
Hi,
Sorry for late reply. I was running out of time, so I used the offset tune
future of UHD to handle that spike. See the following link, hope it helps,
http://files.ettus.com/manual/structuhd_1_1tune__request__t.html
--
Bob
On Sat, Apr 2, 2016 at 7:41 AM, hanwen wrote:
> Hi Bob,
>
&g
.
--
Bob
>
> this is the address of picture
>
> http://imgur.com/2EQiY6O
>
> sorry to send two e-mails
>
>
>
>
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>
>
> The ML archive here looks like it has stopped updating:
>
> http://lists.gnu.org/archive/html/discuss-gnuradio/2015-10/index.html
>
> Regards,
> Andy
>
>
>
I am also unable to see recent threads. Only one email for this month.
--
Bob
__
>
> The ML archive here looks like it has stopped updating:
>
> http://lists.gnu.org/archive/html/discuss-gnuradio/2015-10/index.html
>
> Regards,
> Andy
>
>
>
I am also unable to see recent threads. Only one email for this month.
--
Bob
_
On Mon, Sep 21, 2015 at 7:38 PM, Tom Rondeau wrote:
> On Mon, Sep 21, 2015 at 6:40 AM, bob wole wrote:
>
>> I am studying the code of correlate_access_code_bb_impl.cc for
>> understanding its working. I see that the block is derive from "block"
hat blocks derived from "block"/"gr::block" should
implement forecast() method, but I did not see any implementation of
forecast() in code of correlate_access_code_bb_impl.cc.
Can somebody please tell me why ?
--
Bob
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I have opened an issue on the gnuradio.org. See the link below
http://gnuradio.org/redmine/issues/841
--
Bob
On Sat, Sep 12, 2015 at 1:36 PM, bob wole wrote:
> Okay. I registered my self at gnuradio.org. Do I have to open a new Issue
> on the website?
>
> --
> Bob
&g
Okay. I registered my self at gnuradio.org. Do I have to open a new Issue
on the website?
--
Bob
> Jan, Bob,
>
> might be worth opening a ticket for this.
>
> M
> On 10.09.2015 00:22, bob wole wrote:
> > Hey Jan,
> >
> > Thanks for your reply, you are c
advantages?
Yeah, I too was hoping for a reply from Tom and Nick on this.
--
Bob
On Tue, Sep 8, 2015 at 12:37 PM, Jan Krämer wrote:
> Also I think Tom and Nick Foster for sure know more about it than I do.
>
> Cheers,
> Jan
>
> 2015-09-08 8:44 GMT+02:00 Jan Krämer :
>
>
On Tue, Sep 1, 2015 at 2:55 PM, bob wole wrote:
> I am trying channel coding in gnuradio. I am using convolutional encoder
> with K=7 and R=1/2 with polynomials [109, 79] (default). However I am not
> getting the expected result. I input a known bit sequence, single frame
> using hea
>
>
> > I think many of the folks who would have comments on this are at the Gnu
> > Radio conference this week
> >
> >
> >
> > On 08/26/2015 02:09 PM, bob wole wrote:
> >
> >
> >
> > On Tue, Aug 25, 2015 at 11:36 PM, bob wol
using gnuradio 3.7.8.
--
Bob
fecapi_tagged_decoders_mod.grc
Description: Binary data
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On Tue, Aug 25, 2015 at 11:36 PM, bob wole wrote:
> Hi,
>
> I have a burst system in gnuradio which is working fine with usrps. I have
> used tags (tx_time, tx_eob and tx_sob) to define packet boundaries and
> transmission time. Tags are inserted by a block which is connected be
system?
I have attached a picture of my current system and identified where I want
to insert FEC in tx and rx.
Comments are appreciated.
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>
> On 08/13/2015 08:38 AM, bob wole wrote:
> > I am using gnruadio 3.7.8. I have a module (python) which is working
> > well for version 3.6.3. In made necessary changes so that it can work
> > with gnuradio 3.7.8. However I am getting following error
> >
> >
_getattr__
return getattr(self._impl, name)
AttributeError: 'hier_block2_sptr' object has no attribute '_hb'
I spent a lot of time to figure out this but could not resolve it, so I
thought to get help from mailing list.
Is this a bug or I am
On Tue, Aug 11, 2015 at 11:54 AM, Johnathan Corgan wrote:
> On Tue, Aug 11, 2015 at 4:24 AM, bob wole wrote:
>
>
>> Anyone successful in applying that patch to thrift 0.9.2 ? Thoughts ?
>>
>
> In the mastering of the live SDR image, I had to create a new patch th
On Sat, Aug 8, 2015 at 11:20 AM, bob wole wrote:
>
>
> On Fri, Aug 7, 2015 at 9:51 AM, bob wole wrote:
>
>>
>>
>> On Thu, Aug 6, 2015 at 6:36 PM, Tom Rondeau wrote:
>>
>>> On Thu, Aug 6, 2015 at 1:24 AM, bob wole wrote:
>>>
>>>
On Fri, Aug 7, 2015 at 9:51 AM, bob wole wrote:
>
>
> On Thu, Aug 6, 2015 at 6:36 PM, Tom Rondeau wrote:
>
>> On Thu, Aug 6, 2015 at 1:24 AM, bob wole wrote:
>>
>>>
>>>
>>> On Wed, Aug 5, 2015 at 6:46 PM, Tom Rondeau wrote:
>&
On Thu, Aug 6, 2015 at 6:36 PM, Tom Rondeau wrote:
> On Thu, Aug 6, 2015 at 1:24 AM, bob wole wrote:
>
>>
>>
>> On Wed, Aug 5, 2015 at 6:46 PM, Tom Rondeau wrote:
>>
>>> On Wed, Aug 5, 2015 at 1:21 AM, bob wole wrote:
>>>
>>>>
On Thu, Aug 6, 2015 at 6:36 PM, Tom Rondeau wrote:
> On Thu, Aug 6, 2015 at 1:12 AM, bob wole wrote:
>
>>
>>
>> On Wed, Aug 5, 2015 at 6:44 PM, Tom Rondeau wrote:
>>
>>> On Wed, Aug 5, 2015 at 4:47 AM, bob wole wrote:
>>>
>>>>
&
On Thu, Aug 6, 2015 at 12:44 AM, Tom Rondeau wrote:
> On Wed, Aug 5, 2015 at 2:07 AM, bob wole wrote:
>
>> Ubuntu 14.04 64-bit
>> Gnuradio 3.7.8rc1
>>
>>
>> I am running this flowgraph "fecapi_async_to_stream.grc" that comes with
>> gr-fec. A
On Wed, Aug 5, 2015 at 6:46 PM, Tom Rondeau wrote:
> On Wed, Aug 5, 2015 at 1:21 AM, bob wole wrote:
>
>>
>> > There is a directory
>>> > gnuradio-runtime/python/gnuradio/ctrlport
>>> >
>>> >
>>> > where you in controlport rel
On Wed, Aug 5, 2015 at 6:44 PM, Tom Rondeau wrote:
> On Wed, Aug 5, 2015 at 4:47 AM, bob wole wrote:
>
>>
>> I am here again. I ran "fecapi_async_decoders.grc" with controlport
>> performance moniter on. I made a new config.conf file in ~/.gnuradio
.7/dist-packages/networkx-1.10-py2.7.egg/networkx/drawing/nx_pydot.py",
line 271, in pydot_layout
pydot = load_pydot()
File
"/usr/local/lib/python2.7/dist-packages/networkx-1.10-py2.7.egg/networkx/drawing/nx_pydot.py",
line 47, in load_pydot
raise ImportError(msg)
ImportE
0 at item #14965440
thread[thread-per-block[7]: ]: Missing length
tag.
The only thing that changes is the item#.
Testing further ....
--
Bob
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> > There is a directory
> > gnuradio-runtime/python/gnuradio/ctrlport
> >
> >
> > where you in controlport related stuff.
> >
> > - - Volker
> >
> >
> > Am 04.08.2015 um 10:09 schrieb Jeon:
> >
> > Dear Bob,
> >
>
the gnuradio
directory. Where is the source code for control port? Also there are no
examples for using control port.
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Marcus,
Certainly a type. Since Maricus did not mention any hardware sink I was
just reminding him to add a throttle block if it is not there :)
--
Bob
On Thu, Jul 30, 2015 at 11:13 AM, Marcus Müller
wrote:
> Hi Bob,
>
> Sorry I have to contradict here: when working with hardware, y
Maricus,
Does your flowgraph involves aany hardware sink e.g USRP, audio ? If try
adding a throttle if you are not already doing it.
--
Bob
> Hi Marius,
>
> good question!
> Now, typically, you'd use tools like valgrind to figure that out. I
> haven't noticed a memory
On Sat, Jul 4, 2015 at 8:35 PM, bob wole wrote:
> Hi list,
>
> I was not getting reply on the previous thread so I though to start a new
> thread.
>
> gnuradio version 3.7.7.1
> ubunutu 14.04 32-bit
>
> I am trying to use gr-fec and I am having issues running exampl
t_items)
File
"/usr/local/lib/python2.7/dist-packages/gnuradio/gr/runtime_swig.py", line
4860, in top_block_start_unlocked
return _runtime_swig.top_block_start_unlocked(*args, **kwargs)
RuntimeError: boost::thread_resource_error: Resource temporarily unava
On Thu, Jul 2, 2015 at 8:10 PM, bob wole wrote:
>
>
> On Tue, Jun 30, 2015 at 2:00 PM, bob wole wrote:
>
>>
>>
>> On Tue, Jun 16, 2015 at 11:45 PM, bob wole wrote:
>>
>>>
>>>
>>> On Tue, Jun 16, 2015 at 11:41 PM, Tom Rondeau w
On Tue, Jun 30, 2015 at 2:00 PM, bob wole wrote:
>
>
> On Tue, Jun 16, 2015 at 11:45 PM, bob wole wrote:
>
>>
>>
>> On Tue, Jun 16, 2015 at 11:41 PM, Tom Rondeau wrote:
>>
>>> On Tue, Jun 16, 2015 at 1:03 PM, bob wole wrote:
>>>
>>&
On Tue, Jun 16, 2015 at 11:45 PM, bob wole wrote:
>
>
> On Tue, Jun 16, 2015 at 11:41 PM, Tom Rondeau wrote:
>
>> On Tue, Jun 16, 2015 at 1:03 PM, bob wole wrote:
>>
>>>
>>>
>>>> On 16.06.2015 08:26, bob wole wrote:
>>>> >
On Tue, Jun 16, 2015 at 11:41 PM, Tom Rondeau wrote:
> On Tue, Jun 16, 2015 at 1:03 PM, bob wole wrote:
>
>>
>>
>>> On 16.06.2015 08:26, bob wole wrote:
>>> > Hi,
>>> >
>>> > I just stared working on FEC in gnuradio. I found th
>
> On 16.06.2015 08:26, bob wole wrote:
> > Hi,
> >
> > I just stared working on FEC in gnuradio. I found that there is
> > gr-fec. I want to know that which literature , books/papers, was
> > followed during the implementation of the gr-fec so that I can g
Hi,
I just stared working on FEC in gnuradio. I found that there is gr-fec. I
want to know that which literature , books/papers, was followed during the
implementation of the gr-fec so that I can go through the c++
implementation more productively and add something.
--
Bob
on port 0
ninput_items = len(in0)
j=0
for i in range(0,ninput_items):
if np.absolute(in0[i]) >= self.threshold :
out0[j] = in0[i]
j = j + 1
self.consume(0,ninput_items)
self.produce(0,len(out0))
return 0
--
Bob
On 10/29/2014 01:54 PM, bob wole via USRP-users wrote:
> >
> > USRPN210r4 with SBX
> >
> > I am observing a strong spike at the center of the receive spectrum
> > when I start burst transmission.
> >
> > My top flowgraph contains following two hierarchic
being received? Which one is it ? And why is
it happening? How can I avoid it because it is affecting my packets.
When I apply the offset in digital using DDC/DUC, the spike moves out of
the band.
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Well, in my case the tx/rx would not be stationary, so the channel is not
quite.
--
Bob
> If you can tolerate the stream stopping, use Power Squelch. Otherwise,
> time to dive in and follow Tom's advice from May - disable the CMA taps
> update loop when there's no sign
, because it tries to equalize noise as well. Thanks for your
comment.
--
Bob
On Mon, Sep 29, 2014 at 7:19 PM, Jeff Long wrote:
> Try using a "threshold" off the "mag squared" and feed that into a
> multiplier after block2 (with appropriate type adapters). As long as
&g
Hi thanks for your comment. block2 is the gnuradio "CMA equalizer block". I
want the CMA block to remain quiet when there is no signal of interest.
Bob
Bob,
>
> Saw this the other day, but there isn't a lot to go on here. If block2
> is your own, you can make it do the
People, any ideas on it?
--
Bob
On Wed, Sep 24, 2014 at 12:04 PM, bob wole wrote:
> I have following flowgraph:
>
>
> usrp_source--->>probe_mag_squared_block>block2--->block3
>
> What I want to do is that I want to bypass the "work" function
raph. Is this possible using stream
tags, or message passing etc ? Any example code would be nice.
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On 06/09/2014 06:05 AM, bob wole wrote:
> > Can I have a comment on it?
>
> Bob,
>
> we've given you a lot of information on this (see Tom's posts as a
> start). If you still have questions, I recommend you start a new thread
> and post exactly what you need to k
ng on sample rate, and
analog delays *AFTER* the burst leave transmit buffer.
--
Bob
On Mon, Jun 9, 2014 at 10:05 AM, Tom Tsou wrote:
> On Wed, Jun 4, 2014 at 2:01 PM, bob wole wrote:
> > I think that USRP transmit FIFO is at the start of the DSP chain in FPGA
> i.e
> > it
Can I have a comment on it?
--
Bob
On Thu, Jun 5, 2014 at 11:02 AM, bob wole wrote:
> Sorry for not stating the hardware earlier. I am using USRP N210, with
> RFX2400 and WBX boards.
>
> --
> Bob
>
> On Wed, Jun 4, 2014 at 11:07 PM, Marcus Leech wrote:
>
>> I
Sorry for not stating the hardware earlier. I am using USRP N210, with
RFX2400 and WBX boards.
--
Bob
On Wed, Jun 4, 2014 at 11:07 PM, Marcus Leech wrote:
> I don't know the detailed answer, but any such answer will depend very
> much on which USRP hardware you're talking about
transmit FIFO if it has been
tagged as tx_time=X.
--
Bob
On Wed, Jun 4, 2014 at 10:51 PM, Marcus Leech wrote:
> It will depend some on the effective group delay of both the interpolation
> filters in the the FPGA and the analog group delay of the analog bits of
> whatever daughtercard you
I am using stream tags for the transmission control. I want to know what is
the accuracy/precision of the tx_time tag? E.g if I tag a burst A with
tx_time=X, then the burst A will come out of the USRP transmit FIFO at
X+delta, how large the value of delta could be?
--
Bob
Thanks for your reply Tom. Could I have some more explanation on it? if a
training sequence at start of each burst could help in fast convergence for
burst modem?
--
Bob
On Mon, May 12, 2014 at 6:01 AM, Tom Rondeau wrote:
> On Mon, May 12, 2014 at 5:59 AM, bob wole wrote:
>
>&g
continuing with it?
Thanks
--
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I am trying to use the UHD Asyn Msg source but I am not getting any thing
out of this block. How can I use it? Can somebody please share any existing
flow-graph that demonstrates the block usage.
Thanks,
Bob
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he streamed packet and the metadata in
> the tags (the tx time, though it could also be *the centre frequency for
> FH*)
> and tx accordingly.
>
Hi MB,
I am using tags (tx_time, tx_eob, tx_sob) for burst transmission. You
mentioned above that tags can also be used to tell the centre fre
efore trying that I thought I
should try the example that comes with gnuradio, is the phase outputlooks
ok?
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On Sun, Dec 15, 2013 at 10:57 PM, Tom Rondeau wrote:
> On Sun, Dec 15, 2013 at 12:36 PM, bob wole wrote:
> > I installed gnuradio and UHD using instruction on
> >
> >
> http://gnuradio.org/redmine/projects/gnuradio/wiki/BinaryPackages#Binaries-from-Ettus-Research-L
I am using Ubuntu 12.04 LTS 64 bit.
On Sun, Dec 15, 2013 at 9:36 AM, bob wole wrote:
> I installed gnuradio and UHD using instruction on
>
>
> http://gnuradio.org/redmine/projects/gnuradio/wiki/BinaryPackages#Binaries-from-Ettus-Research-Linux-Windows
>
> UHD programs ar
how? What is the recommended way to do this?
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Thanks Achilleas for explanation,
I'll try with gnuradio 3.7.2 and report back.
--
bob
On Fri, Nov 22, 2013 at 8:30 PM, Achilleas Anastasopoulos wrote:
> Bob,
>
> As I mentioned in my email, the only application that currently
> runs is the
>
> timing_test.grc
>
&
Great share Achilleas. But I am having problem running it. Quite a few
blocks are missing. Please share on what version of GnuRadio was it built
against? Did you use custom blocks too?
--
Bob
>
> Outstanding! Thanks for putting in the time to make this happen!
>
> What version of
Thanks Tom and Marcus for taking time out and explaining things on the
list.
--
Bob
>
> > How do you determine the size of taps? How much of a difference does
> > setting the transition width from 1MHz to 10MHz make?
> >
> Generally, the wider the transition width, the
Hi Tom and Chris,
Thanks for your detailed guidance on this. I'll try this out.
Bob
On Mon, Oct 7, 2013 at 9:49 PM, KB3CS - Chris wrote:
> $ git diff v3.6.3 HEAD gr-filter/lib/firdes.cc (but modified since you
> remain @ v3.6.3)
>
> diff --git a/gr-filter/lib/firdes.c
We installed gnuradio 3.6.3 using gnruadio build script. We can't
change the gnuradio version currently. How can we apply this patch to
our installation. What commands should we run? We don't use git.
--
Bob
On Sun, Oct 6, 2013 at 12:39 PM, KB3CS - Chris wrote:
>* (If you just w
On 09/23/2013 11:07 PM, bob wole wrote:
Can somebody please guide me on this ?
Bob
On Fri, Sep 20, 2013 at 4:44 PM, bob wole wrote:
> I have USRPN210 with WBX and RFX2400. Is there any AGC chip on N210
> motherboard or WBX, RFX2400 before ADC to utilize the dynamic range of ADC
>
Can somebody please guide me on this ?
Bob
On Fri, Sep 20, 2013 at 4:44 PM, bob wole wrote:
> I have USRPN210 with WBX and RFX2400. Is there any AGC chip on N210
> motherboard or WBX, RFX2400 before ADC to utilize the dynamic range of ADC
> ? if yes, which one? If not, then won'
I have USRPN210 with WBX and RFX2400. Is there any AGC chip on N210
motherboard or WBX, RFX2400 before ADC to utilize the dynamic range of ADC
? if yes, which one? If not, then won't the varying input signal (for
example signal from moving object) to ADC affect the performance of ADC ?
Hello,
I currently receive discussion topics individually.
I would now like to receive them in a single folder.
Thank you.
bob mensah___
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Hello,
I am a student in need of a USRP. I'd like the USRP2 or the N200, but they're
probably too expensive. I can probably still use the old USRP1.
I think I have the radios I need, but if you've got them or accessories to
sell,
I'd be interested in hearing about it.
__
luck with this part? Any timing issues I
should
be aware of? It looks as though the clock generator chip shouldn't have a
problem with it.
Thanks much,
--Bob
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, I will.
Bob
On 8/8/2010 5:00 PM, Tom Rondeau wrote:
On Sun, Aug 8, 2010 at 1:41 PM, Thunder87 wrote:
Thunder87 wrote:
If so, what is maximal and minimal safe "samples/symbol" to "samp_rate"
rates?
Minimal "samples/symbol" is 2.
Is there a maximal ?
215 is
(n) which
is NEVER the case in a real system.
Bob
On 8/3/2010 9:45 PM, John Andrews wrote:
Hi,
can someone guide me a little here please. I have a complex signal S(n)
that I multiply with a sequence P(n) of length N (the sequence consists
of {-1,1} ). I pass the product into a Costas Loop
That is an awesome amount of LO suppression in an SSB mixer based system
(I mean the power 1/33-th of the LO). A more interesting number
given this level of LO suppression would be the introduction of a tone
(say) above the LO at LO+F and to see what the power is at LO-F (the image).
Bob
The 2nd edition of the REALLY expensive ($29.95) SDR book by friend and
colleague, Behrouz Farhang-Beroujeny, has been released from lulu. It
contains important additions (OFDM, more filtering, all known errata
fixed) and I recommend it highly.
http://bit.ly/cTU2cm
Enjoy
Bob McGwier
(ARS
part of a source or sink, i.e. don't inherit from
gr_sync_block or is there some other way to organise that.
Regards
Bob
On 12/07/2010 20:17, Eric Blossom wrote:
> On Mon, Jul 12, 2010 at 02:18:43PM +0100, Bob Cowdery wrote:
>> Hi,
>>
>> I've just started investigatin
Thanks Eric, that makes sense. I expect to go around the houses a bit
on this but I have working C code so essentially first off I just need
to code the interfaces. I guess therefore I have the equivalent of usrp2
and need to do a somewhat simplified version of gr-usrp2.
Bob
On 12/07/2010 20
in usrp2.
2. Most of the documentation talks about processing blocks, sources and
sinks. Is there anything that talks about a device which is both a
source and a sink or do I need to trawl through the usrp code to see how
to handle that.
Regards
Bob
http://bit.ly/bpwfa9
--
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Member: ARRL, AMSAT, AMSAT-DL, TAPR, Packrats,
NJQRP, QRP ARCI, QCWA, FRC.
“One must be a fox in order to recognize traps,
and a lion to frighten off wolves"
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/black side in it for JTRS but we just don't want R&S to be able
to patent something so basic as this in a communications system.
This should be on the radar for cellular telephone companies and more.
Bob
http://www.faqs.org/patents/app/20100027782
Inventors: Ingo Voll Bo
ot
yet in the ideal "maker format" (no 3d printers are involved YET) it is
moving that way with the inexpensive plug in cards. Hopefully you won't
mind me plugging my favorite ex-EFF employee and favorite current syfy
author's book on the subject.
http://craphound.com/mak
I hear at work that
RF is dead but Wireless is in!).
Bob
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Whenever this comes up, I need to do
sudo make uninstall
for whatever reason. Something that is in /usr/local/lib/gnuradio ...
etc. gets in the way of the build. It is just too easy to do the
uninstall for me to take time to figure it out.
Bob
On 1/15/2010 8:54 PM, Johnathan Corgan
, but those running gnuradio and other things under
cygwin, the move to gcc4 and some of the other stated improvements seem
to me to be a win.
Bob
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(Co)Author: DttSP, Quiktrak, PowerSDR, GnuRadio
Member: ARRL, AMSAT, AMSAT-DL, TAPR, Packrats,
NJQRP, QRP ARCI, QCWA, FRC.
"the only people f
The web site server serves git. We are all down.
Andreas Fink wrote:
can someone give me the exact command to check out gnuradio via git?
as the website is down, I'm stuck.
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ARRL Website refers to Linux Journal: http://bit.ly/4Xce6q
73's
Bob
N4HY
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I am wondering if anyone in receipt of this note is friends with or
knows the name of a good high level contact at the ACLU. I have a
first amendment case I would like to discuss with them.
Please contact me OFF LIST.
Bob McGwier
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Member
I've got a USRP board and several radio boards which I wish to sell.
USRP, compatible USB cable and original power supply: $585
LFRX DC-50 Mhz receiver (two available): $60 each
LFTX (two available): $60 each
FLEX 1800 transciever: $229
SMA 1.8 Ghz a"rubber duck" antennas (three available): $10 ea
loop based carrier routines with a noise bandwidth
smaller than the bin width in the FFT. This will refine the estimate of
the frequency nicely by using phase lock.
Bob
Don Latham wrote:
Hi Thomas: What you propose might work; it's a simple bang-bang servo
frequency control. It's succ
symbols using the fact that at each symbol time the
phase transition is +/- pi/2.
Should you follow this type of construction, the performance of coherent
detection/with "viterbi error correction" for the paths, the performance
is approximately the same as QPSK with the same bit r
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