Short presentation of Remote SDR V5. Example with a transceiver dedicated to QO-100.
Details on: https://f1atb.fr/
73
F1ATB
I don't have a stabilized LNB. The stabilization is done by Remote SDR tracking the beacons. You have to tick the case 'Auto Correction' to run this process. Then you will have the beacons well centred.
I know and agree that Remote operation (transmission) is not allowed. Here ( https://f1atb.fr/index.php/2022/05/15/qo-100-live/) I share only the receiver as any websdr. After, at home if you have an SDR (example Pluto) connected by Ethernet to SDR console on your PC, it's remote transmission. The main point, is to be closed to your system to switch it off in case of problem. It's how I use Remote SDR.
The key point, with Remote SDR, is that you have a low data rate, and you can scan the band on your tablet sited in the living room using your local Wi-Fi. You use a simple web browser and install no specific software. In addition, I recommend on my website ( https://f1atb.fr/index.php/2022/02/11/qo-100-transceiver/ ) a very simple and efficient system to switch off the power in case of software bug or communication bug.
73
F1ATB
Share (in reception) your QO100 or other access with Remote SDR version 5. A simple Web browser on PC or Smartphone is enough. Source and image for Raspberry are now available on my website http://f1atb.fr. To convince you, listen to QO-100 live from my home. https://f1atb.fr/index.php/2022/05/15/qo-100-live/
73 to all
F1ATB
Remote SDR allows remote control of an SDR-based transceiver from a simple web browser.
Signal processing is performed by a Raspberry Pi4 or an Orange Pi Zero 2.
Different configurations are possible with RTL-SDR, HackRF One or Adalm-Pluto.
You can transmit in SSB, CW or NBFM. On the site http://f1atb.fr you will find various examples including my transceiver to access QO-100.
This architecture makes it possible to locate the HF part at the foot of the antenna and to control the transceiver from your warm office.
Many features are available, such as:
- Automatic band scan
- Equalizer on the RX and TX audios
- Notch Filter
- Noise Filter
- CW manipulator (Iambic A or Iambic B)
- Modulation compressor
- Satellite tracking with Gpredict
- Control of a GS232 type rotator
Runs on Chrome and Edge browsers.
More on https://f1atb.fr
Happy New Year
Yes it works with only 2GB RAM and 16GB SdCard.
André
F1ATB
Remote SDR on Raspberry Pi 4 is now available. An SSB or NBFM transceiver remotely controlled with a simple web browser. Preconfigured for QO-100. Details and installation image are available here: https://f1atb.fr/index.php/fr/…ation-image-raspberry-4b/
Don't hesitate to provide me feedback on https://f1atb.fr . 73 F1ATB André
I did some progress on a solution based on the circuit SI5351 to have something feeding the SDR and the LNB . With the designed I used, I arrive to the conclusion that the performances are insufficient for a high power transmitter. The stability in frequency is good, but I have spurious lines at -40, - 50dB. I gave more explanation at the bottom of this post.
https://f1atb.fr/index.php/2021/07/27/remote-gpsdo-hardware/
73
F1ATB
Here are the spectra at the output of one clock of the Si5351
I have 55dB between the max and the noise. With my analyser I have an horizontal resolution of 30Hz, but I cannot zoom on the central signal. I see that the load on the source and the programmable output level are key points to have clean spectra.
https://f1atb.fr/index.php/2021/07/27/remote-gpsdo-hardware/
73
F1ATB
As I can't find a good solution, I started a development of a GPSDO to drive my Pluto. I already published my hardware configuration.
https://f1atb.fr/index.php/2021/07/27/remote-gpsdo-hardware/
I am currently finalizing the software.
73
F1atb
André
To switch any relay according to the mode TX / RX or the frequency band you just have to configure the system in the configuration file of "Remote-SDR". It will switch any GPIO On or Off.
More here:
https://f1atb.fr/index.php/2021/05/03/remote-sdr-v2-tips/
73
F1ATB
For the moment I connect it only by USB.
Regards
F1ATB
When you transmit you can set to 1 or 0 any GPIO to feed a relay.
André
Claudio
Please develop what you want to do. I am not sure to understand clearly your question.
73
The new version of Remote SDR v2 can process the Adalm-Pluto SDR in addition to HackRF or RTL-SDR. It introduces also NBFM transmission in addition to SSB,
Details are available here:
https://f1atb.fr/index.php/2021/05/03/remote-sdr-v2-2/
73
Which reference did you buy from Aliexpress?
Regards
F1ATB
André
Where can I Buy a TCXO to improve the stability of the Pluto. It seems there is no stock for the TCXO ABRACON ASTX-13-C-40.000MHz-I05-T at Mouser. Is there an alternative?
I have an Adalm-Pluto Rev B
Thanks for your help
André
F1ATB
Hi All
Now i have the complete description of the HackRf solution i developped available here :
https://f1atb.fr/index.php/202…100-transceiver-with-sdr/
It includes the Source code on github.
I use it daily on qo-100.
73 F1ATB
Now the complete description of the remote SSB transceiver with RTL-SDR or Hack RF is available. It adresses the signal processing with GNU Radio on an Orange PI, the post processing in Javascript and the web interface. The sourge is available also on GitHub.
[Blocked Image: https://f1atb.fr/wp-content/uploads/2020/07/Remote_SDR_Synop-1024x576.jpg]
More on my blog:
https://f1atb.fr/index.php/2020/07/21/remote-sdr-2/
73 F1ATB
André
If you are interested by a transceiver based on SDR and remotely controlable from anywhere via your local network, I have detailed the solution I developped and used daily. It's based on 2 HackRF One SDR and 2 Orange PI nano computers. The signal processing is done using the graphical tool gnuradio-companion and detailed here:
The web interface "Remote SDR" will follow.
Your remarks are welcome
73
F1ATB
André
