SDR (Software Defined Radio) Transceiver

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ted051
Posts: 20
Joined: Fri May 29, 2015 11:47 am
Location: Germany, Elsterberg

Re: SDR (Software Defined Radio) Transceiver

Post by ted051 » Sat Jan 07, 2017 6:37 pm

Hi all, happy New Year!
Some month's ago I began to develop a stand- alone Transceiver, with Pavel's assistance. It is based on a STM32F7Discovery board and got the name "DiscoRedTRX". It has a touchscreen, works pretty well, but has no realtime spectrum display.
That's the reason, because I now try to build the "big brother" of this project, with a Raspberry Pi3B as controller. The software for the Raspi comes from John Melton (G0ORX/N6LYT) and has the name "PiHPSDR). The audio codec WM8731 works, and I hope to have it run in a couple of weeks.
To solve is the connection and control of my PE4306 attenuator. My currently plan is, to make an extra program for this reason. EBay-link to the attenuator board:
http://www.ebay.de/itm/RF-ATTENUATOR-0- ... xyiRlSan6z
Link to the DiscoRedTRX article:
http://www.wkiefer.de/x28/Red%20Pitaya.htm

n1gp
Posts: 3
Joined: Tue Feb 09, 2016 7:51 pm

Re: SDR (Software Defined Radio) Transceiver

Post by n1gp » Tue Jan 10, 2017 2:37 am

Hello Take!

Thank-you for sharing your project, I look forward to hearing more
and trying something like it myself!

Best 73's,

-Rick / N1GP

razvanfatu
Posts: 4
Joined: Wed Jan 11, 2017 10:42 pm

Re: SDR (Software Defined Radio) Transceiver

Post by razvanfatu » Fri Jan 27, 2017 12:44 am

Anyone tested this on the new Red Pitaya STEMlab 125-14 ?

Or, are there any hardware differences between the v1.1 and the STEMlab 125-14 ?

Thanks,
Razvan.

take
Posts: 10
Joined: Mon Apr 18, 2016 2:30 am

Re: SDR (Software Defined Radio) Transceiver

Post by take » Tue Feb 07, 2017 9:05 am

Hi Rick,

Thank you for interesting my TS-680SDR project.

I have worked more than 170 contacts from 160m to 6m with CW, SSB and Digtal modes with my new toy. I am really impressed that Kenwood did splendid works in 1980s and these products can be reusable with new technology like Redpitaya today. I hope somebody will try it with their rigs sitting on their desk with dust.

I am planning to control my TS-680SDR via CAT, not via RedPitaya Conectors and hopefully control PowerSDR from TS-680SDR front panel but it will be a long time project as I am busy enough to enjoy QSO with current set-up. I hope I can hear such reports from somebody soon.

See you on the air.

Regards,

take

de JA5AEA

-------------------------------------------------------------------------------------------------------------------------

Hello Take!

Thank-you for sharing your project, I look forward to hearing more
and trying something like it myself!

Best 73's,

-Rick / N1GP

tony1tf
Posts: 32
Joined: Mon Sep 21, 2015 10:49 am

Re: SDR (Software Defined Radio) Transceiver

Post by tony1tf » Tue Feb 07, 2017 10:31 am

Hi Wolfgang and Pavel

I have been to several of the STMicro free events, and therefore have an STMicro Discovery F7 evaluation board, and the links to the new open source ecosystem. I also have a Redpitaya currently running Pavel's WSPR code (see received spots from G3OVH on WSPRnet). I would love to combine the two as in your DiscoRedtrx project, however I am struggling for a simple guide. At the moment, I am unable to disentangle STMicro code from the Redpitaya code on Github, having been following links back and forth for some time. Perhaps at the moment, you havnt released the STMicro code, Wolfgang, or at least I havn't been able to find it?
Any help would be much appreciated so I can contribute to this project.
Tony

pavel
Posts: 478
Joined: Sat May 23, 2015 5:22 pm

Re: SDR (Software Defined Radio) Transceiver

Post by pavel » Tue Feb 07, 2017 12:04 pm

Hi Tony,

The code that Wolfgang develops for the STMicro Discovery F7 board can be found at the following link:
https://github.com/pavel-demin/DiscoRed ... /master/ui

It can be built using the GNU ARM Embedded Toolchain:
https://developer.arm.com/open-source/g ... ain/gnu-rm
https://launchpad.net/~team-gcc-arm-emb ... ubuntu/ppa

Here is a pre-built binary:
https://www.dropbox.com/sh/5fy49wae6xwx ... X.bin?dl=1

Red Pitaya should be booted with this SD card image:
https://www.dropbox.com/sh/5fy49wae6xwx ... 8.zip?dl=1

The remaining software can be installed in the following two steps:
  1. enlarge the SD card partition:

    Code: Select all

    echo -e "d\n2\nw" | fdisk /dev/mmcblk0
    parted -s /dev/mmcblk0 mkpart primary ext4 16MB 100%
    resize2fs /dev/mmcblk0p2
    
  2. follow the instructions from the README file:
    https://github.com/pavel-demin/DiscoRedTRX
Best regards,

Pavel

tony1tf
Posts: 32
Joined: Mon Sep 21, 2015 10:49 am

Re: SDR (Software Defined Radio) Transceiver

Post by tony1tf » Tue Feb 07, 2017 6:20 pm

Thanks Pavel

Great instructions as usual :)
I know everyone probably asks you this, but is the gnu-radio img code stand-alone - or can I combine it with other Red Pitaya instruments (such as the WSPR code)? Should everything be on separate SD cards?

best regards
Tony

pavel
Posts: 478
Joined: Sat May 23, 2015 5:22 pm

Re: SDR (Software Defined Radio) Transceiver

Post by pavel » Tue Feb 07, 2017 9:39 pm

tony1tf wrote:... is the gnu-radio img code stand-alone - or can I combine it with other Red Pitaya instruments (such as the WSPR code)? Should everything be on separate SD cards?
Most of my application that can be easily combined with the Red Pitaya ecosystem are already available from the application marketplace.

A couple of my applications like the WSPR and embedded transceivers require additional packages and settings that aren't installed on the SD card images provided by Red Pitaya. For these applications, I provide pre-built SD card images with all the required packages and settings.

Since all the source codes, building scripts and some instructions are provided, it's of course possible to make various combinations of the SD cards images, system settings, packages and pre-installed applications.

Here is an approximate list of steps needed to install these applications on the SD card images provided by Red Pitaya:
  • install missing packages
  • build the applications from the sources
  • build the FPGA configuration bitstream from the sources
  • configure the FPGA
  • start the application
The first two steps would probably require a few iterations.

ted051
Posts: 20
Joined: Fri May 29, 2015 11:47 am
Location: Germany, Elsterberg

Re: SDR Transceiver DiscoRedTRX

Post by ted051 » Wed Feb 08, 2017 5:29 pm

Hello Tony,
thanks for your interest! The software for the STM32F7Disco board is in constant development. In the moment I am working on a CW keyer for the touchscreen, which shall work like an Iambic keyer.
If you are interested in the latest versions, please give me your email address.
For the STM32 development I use Eclipse, in the version "System workbench for stm32". It can be found here: http://www.openstm32.org/HomePage
And I use a modified library from Uwe Becker,
http://mikrocontroller.bplaced.net/word ... ge_id=5329
Here a screenshot of the keyer:
Image
Best regards,
Wolfgang

F6bzg
Posts: 2
Joined: Thu Mar 02, 2017 12:12 pm

Re: SDR (Software Defined Radio) Transceiver

Post by F6bzg » Thu Mar 02, 2017 2:17 pm

Hello Pavel,
Hello Everybody,

Many thanks for the hard work which give us so good SDR apps.

I'm the sysop of a dual band websdr (F4KJI.fr) and i would like to upgrade this webstation with a Redpitaya (RP).
It would allow to increase the bandwith of each receiver.
I read some info: the bandwith depends on the PC side applications (see previous messages).
However, I would like to know if each receiver has its own antenna or do they need to share the same antenna?
All we need is :
- one receiver with a 500 Khz bandwith and one antenna,
- one or more receiver with a 48 KHz bandwith and its own antenna (miniwhip).

It would be great to use GNU radio as PC side application.

Thanks for all info about this project.

Best regards

Arnaud

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