We seek to understand and document all radio transmissions, legal and otherwise, as part of the radio listening hobby. We do not encourage any radio operations contrary to regulations. Always consult with the appropriate authorities if you have questions concerning what is permissable in your locale.

Author Topic: RX-888 and graphic board  (Read 228 times)

Offline Ray Lalleu

  • Marconi Class DXer
  • ********
  • Posts: 22263
  • Western part of France
    • View Profile
RX-888 and graphic board
« on: September 09, 2021, 1336 UTC »
Users of the RX-888, what is your graphic board/circuit ?

It's very important, as the RX-888 has no FPGA included, and is leaving all the decimation work to the PC. And the special dll in the Windows-PC has to do all that work before sending the decimated data to the standard SDR software.

And that work is not what a standard Intel or AMD processor can do, not not any machine using the standard way of computing. That work has to be done by special units on the graphic board. But as you know, all graphic boards are not equal... and also maybe the dll cannot use all the families of graphic units from different founders.

At first, please reply about the graphic circuit of your PC, with what results, so we get a basis for further investigations.
D/E/F/G/It/Sp : Dutch/English/French/German/Italian/Spanish
+/- : about 0.02 offset, ++/-- 0.03/0.04 offset
Balanced wire antennas, wire lines and ATU

Offline Josh

  • DXing Phenomena
  • *******
  • Posts: 4109
    • View Profile
Re: RX-888 and graphic board
« Reply #1 on: September 09, 2021, 2302 UTC »
I don't have a 888 but the sdr control apps that push some of the processing off to a gpu will be best with regard to cpu time. On that note, SDR Console can offload processing to a gpu but only certain gpus and apis will do, older cuda or opencl versions might not help a given sdr app - check with the app author if your card will work. In a similar light I was thinking about a 888 ran by a pi, or other small form factor pc might be able to do the grunt work and feed the product to the main pc, dunno.

On a like note, I used the nvidia control panel, specifically the profile menus, offloading to cuda cores on the gpu the opengl api used by a digital mode decoder display. Not only did it offload the visuals, it made them look lovely with antialiasing and anistropic filtering enabled, compared to the same display without aa and aniso.
We do not encourage any radio operations contrary to regulations.