Alex,
Thanks for writing back. I agree that the topology of the two platforms (Lime VS Red Pitaya) are different because of the RF transceiver device and the FPGA on the Lime, but I guess I saw the use of the underlying OS (Linux in both cases) as being the common thread in how the radio apps are loaded to characterize the configurable radio environment. But your points are well taken and I agree.
I’ve been prototyping the Red Pitaya tx/rx board on and off over the past month and this weekend I should have the transmit part nailed down, the receive portion has been in place since I started since it was largely lifted and dropped from my KN0CK HF Upconverting RTL-SDR receiver design. I just took that preamplifier and added it in - works GREAT on the Red Pitaya. The whole thing should be out of prototyping next week and I can send for the boards to be fabbed once I finish the layout. I can ABSOLUTELY guarantee that you will get one of these boards for the LimeSDR and if you twist my arm hard enough I’ll be glad to send you one for your Red Pitaya, too - FREE. All I ask is that you let me know when you have GQRX ready for Linux or Windows so I can test it on the LimeSDR.
The driver board itself is being designed to operate over a 2.0 to 56 MHZ bandwidth (generally, 160m to 6m). The receive preamp is good to 1 GHZ, but this first spin will be HF centric. Later, I may get the receive and transmit working well enough to operate from 160m to 2m, but that’s a stretch goal.
Anyway, I’m glad you’re aboard. I can completely understand that each developer will work on their specific apps. All I ask is that we all stay in contact with each other so we can also cross check our efforts with the other members of the development team. It’ll be a way to get fresh eyes on any issues that should arise while we’re all working the LimeSDR.
No kidding, glad you’re part of this, Alex…!
73 de Marty, KN0CK