GNU Radio, One Step at a Time

Re: [Discuss-gnuradio] Pybombs broken?

Hi Mike,

I am working on documentation for
https://wiki.gnuradio.org/index.php/InstallingGR#Using_PyBOMBS, and have
found differences between that one,
https://github.com/gnuradio/gnuradio/README.md, and
https://github.com/gnuradio/pybombs/README.md. Based on your last post
here, should I wait on any revisions until you have looked at 3.8 some
more?

Thanks,
--
Barry Duggan KV4FV

On Thu, 17 Oct 2019 15:52:59 -0400, Michael Kacher wrote

Sorry, I haven't had a chance to shake out 3.8 with pybombs yet. I'll
provide an update if I get to look into it.
-Mike

Re: [Discuss-gnuradio] How to convert a binary file input to a PMT?

You can use pdu_utils to turn a binary stream into a bunch of PDUs:

https://github.com/sandialabs/gr-pdu_utils

Kyle Logue

Digital Communications Implementation Division

The Aerospace Corporation

From: Discuss-gnuradio <discuss-gnuradio-bounces+kyle.a.logue=aero.org@gnu.org> on behalf of Eamon Heaney <heaneye@vt.edu>
Sent: Friday, November 1, 2019 08:45
To: discuss-gnuradio <discuss-gnuradio@gnu.org>
Subject: Re: [Discuss-gnuradio] How to convert a binary file input to a PMT?

Bumping this, still can't figure out how to turn a binary file source into a PDU that I can transmit. Any advice would be appreciated.

On Tue, Oct 29, 2019, 12:59 PM Eamon Heaney <heaneye@vt.edu> wrote:

Attempting to transmit a wifi packet with gr-ieee802.11. I'm reading in the payload binary from a file source. The output of the file source block is a gr_stream. But the Wifi MAC block requires a gr_message input, which I gather to be in PMT format.

How can I turn my payload into something that the Wifi MAC block can understand? My current attempt, below, runs it through a stream-to-tagged-stream block and then a tagged-stream-to-PDU block, which feeds into a message strobe. This generates a flowchart fine but segfaults ~3 seconds into execution, so I must be doing something terribly wrong.

Thanks!

--

Eamon Heaney

Fleet Commander

President, Model UN at Virginia Tech

Re: [Discuss-gnuradio] How to convert a binary file input to a PMT?

Bumping this, still can't figure out how to turn a binary file source into a PDU that I can transmit. Any advice would be appreciated.

On Tue, Oct 29, 2019, 12:59 PM Eamon Heaney <heaneye@vt.edu> wrote:

Attempting to transmit a wifi packet with gr-ieee802.11. I'm reading in the payload binary from a file source. The output of the file source block is a gr_stream. But the Wifi MAC block requires a gr_message input, which I gather to be in PMT format.

How can I turn my payload into something that the Wifi MAC block can understand? My current attempt, below, runs it through a stream-to-tagged-stream block and then a tagged-stream-to-PDU block, which feeds into a message strobe. This generates a flowchart fine but segfaults ~3 seconds into execution, so I must be doing something terribly wrong.

Thanks!

--
Eamon Heaney
Fleet Commander
President, Model UN at Virginia Tech

Re: Gnuradio for windows

I haven't tried it myself, but I heard that scopy ships with a windows version of GNU Radio and they have nightly builds:

https://github.com/analogdevicesinc/scopy/releases

Kyle Logue

Digital Communications Implementation Division

The Aerospace Corporation

From: Discuss-gnuradio <discuss-gnuradio-bounces+kyle.a.logue=aero.org@gnu.org> on behalf of Kyeong Su Shin <ksshin@postech.ac.kr>
Sent: Friday, November 1, 2019 03:19
To: alireza nazari <nazarihome@gmail.com>; discuss-gnuradio@gnu.org <discuss-gnuradio@gnu.org>
Subject: Re: Gnuradio for windows

To whom it may concern:

I do have a copy of an installable, but it is an outdated version (3.7.12) (Link: https://drive.google.com/file/d/1fFGKbfhvCvo9hgDhIV_qJ02s-7yKcIHe/view?usp=sharing ). Maybe someone can find a more recent version, or build one by using the provided build scripts ( https://drive.google.com/file/d/1fFGKbfhvCvo9hgDhIV_qJ02s-7yKcIHe/view?usp=sharing ).

I am not sure what is going on with the web site - I hope it is just a temporary issue..

Regards,

Kyeong Su Shin

보낸 사람: alireza nazari <nazarihome@gmail.com> 대신 Discuss-gnuradio <discuss-gnuradio-bounces+ksshin=postech.ac.kr@gnu.org>
보낸 날짜: 2019년 11월 1일 금요일 오후 3:26
받는 사람: discuss-gnuradio@gnu.org <discuss-gnuradio@gnu.org>
제목: Gnuradio for windows

Hi,

It looks like the link for downloading gnuradio for windows in wiki is broken and the website is down. Is there anywhere other than Pothos that I can download gnuradio binary files for windows? I am having some problems with Pothos UHD drivers and I am trying to stay away from it.

Regards,

Ali

Re: Lunar Orbiting Platform Gateway

Hi Space-RF-SDR enthusiasts -

Please see below link for the recent (9/25/2019) space agencies lunar communications architecture final report that has detailed information on the planned communications links, protocols and frequencies.

https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=2&ved=2ahUKEwi85KXB8sjlAhUDWa0KHcQhA7MQFjABegQIBBAC&url=https%3A%2F%2Fwww.ioag.org%2FPublic%2520Documents%2FLunar%2520communications%2520architecture%2520study%2520report%2520Final%25209-25-2019.docx&usg=AOvVaw127_IRN2aAY9Kbmnt4IBlt

This is the current baseline for Gateway and downstream lunar surface operational infrastructure. The protocol specifications are all available at ccsds.org.

Kevin

From: Michelle Thompson <mountain.michelle@gmail.com>
Sent: Thursday, October 31, 2019 5:41 PM
To: John Malsbury <jmalsbury.personal@gmail.com>
Cc: Kevin K Gifford <kevin.gifford@colorado.edu>; discuss-gnuradio@gnu.org <discuss-gnuradio@gnu.org>
Subject: Re: Lunar Orbiting Platform Gateway

Yes - I'm attempting to get a copy of the slides from recent ARISS presentations. There was a diagram with planned frequencies. Plenty to work with.

-Michelle W5NYV

On Wed, Oct 30, 2019 at 11:57 AM John Malsbury <jmalsbury.personal@gmail.com> wrote:

And you mentioned something about amateur radio portions, Michelle?

On Wed, Oct 30, 2019 at 11:52 AM Kevin K Gifford <kevin.gifford@colorado.edu> wrote:

Hi -

I am involved in recommending the radio communications architecture for Gateway which is baselined to utilize CCSDS (see cases.org) protocols.

For long-haul RF links (Gateway to Earth) Unified Space Link Protocol (USLP).

For short-haul RF (Gateway to lunar surface): Proximity-1 and AOS

For proximity wireless networks (around Gateway and on lunar surface) 802.11 n/ac baselined, 802.11ax and LTE are under strong consideration.

Please feel free to respond directly if additional information is needed and I'll strive to assist.

Kevin

From: Discuss-gnuradio <discuss-gnuradio-bounces+kevin.gifford=colorado.edu@gnu.org> on behalf of John Malsbury <jmalsbury.personal@gmail.com>
Sent: Wednesday, October 30, 2019 12:34 PM
To: Michelle Thompson <mountain.michelle@gmail.com>
Cc: discuss-gnuradio@gnu.org <discuss-gnuradio@gnu.org>
Subject: Re: Lunar Orbiting Platform Gateway

It was a cheap joke on my part (and not at all commentary on the gateway concept). Disregard.

I'd be down to collaborate on something open source. Could you point to publicly available documents that summarize the standards/specs?

-John

On Wed, Oct 30, 2019 at 8:50 AM Michelle Thompson <mountain.michelle@gmail.com> wrote:

I was hesitant to ask why, but I'm curious now.

I know the Gateway is controversial. I understand there's a lot of doubt it will actually happen. The heavy emphasis on commercial activity is another aspect.

However, I've been asked for help on a receiving station for the amateur radio portions that might be included. There's a lot of overlap between what I do and the type of communications proposed.

Comment and critique would be very appreciated here.

-Michelle W5NYV

On Wed, Oct 30, 2019 at 7:14 AM Müller, Marcus (CEL) <mueller@kit.edu> wrote:

Hey John,

> > Anyone working on…
> Definitely not

Does that imply they're finished?

Best regards,
Marcus

Re: [Discuss-gnuradio] gnuradio-companion-3.8.0 fails to run

On 30/10/2019 00:09, Barry Jackson wrote:
> On 27/10/2019 11:58, Marcus Müller wrote:
>> ah! I missed the part where you said you're not used to Python.
>>
>> In Python, indentation is structure-defining, and the error message
>> sadly doesn't really give context, but it looks like the most probable
>> explanation is that the line you've inserted is not correctly indented.
>>
>> Make sure you're using the same characters to indent (spaces) and the
>> same amount of additional spaces to indent the content of the try:-
>> block.
>>
>> Best regards,
>> Marcus
>>
>
> Thanks Marcus,
> I did not realize about indentation in python.
> I have corrected this by using tabs only as used by similar structures
> in the same file.
> On running grc I get:
>
> [baz@jackodesktop gnuradio]$ gnuradio-companion
> Traceback (most recent call last):
> File
> "/usr/lib/python3.8/site-packages/gnuradio/grc/gui/Application.py", line
> 102, in do_activate
>     self.main_window = MainWindow(self, self.platform)
> File
> "/usr/lib/python3.8/site-packages/gnuradio/grc/gui/MainWindow.py", line
> 84, in __init__
>     generate_modes = platform.get_generate_options()
> File
> "/usr/lib/python3.8/site-packages/gnuradio/grc/core/platform.py", line
> 379, in get_generate_options
>     for param in self.block_classes['options'].parameters_data:
> File "/usr/lib64/python3.8/collections/__init__.py", line 891, in
> __getitem__
>     return self.__missing__(key)            # support subclasses that
> define __missing__
> File "/usr/lib64/python3.8/collections/__init__.py", line 883, in
> __missing__
>     raise KeyError(key)
> KeyError: 'options'
>
> The patch applying your change is attached.
>
> Regards,
> Barry
>
>
>

I have opened an issue on github.
https://github.com/gnuradio/gnuradio/issues/2873

Re: Gnuradio for windows

To whom it may concern:

I am not sure what is going on with the web site - I hope it is just a temporary issue..

Regards,

Kyeong Su Shin

Hi,

Regards,

Ali