Default Firmware

Here you see a screenshot from SDR Television (work in progress) running the LibreSDR at 16MHz bandwidth.

This is the standard firmware from Evariste, F5OEO who has done a great job.

Compare 16MHz with LibreSDR to 5MHz with the PlutoSDR, a big difference!

Many thanks to Mike, G0MJW for the screenshot.

Overclocking

Other firmware is available which overclocks the LibreSDR, but I've not looked at this. Here are the key points:

This is an unofficial port of PlutoSDR onto LibreSDR a.k.a. ZynqSDR. The repo is based on day0wl's repo with several enhancements:

• Optimized linux kernel and buildroot to support higher practical sampling rates with libiio/PlutoSDR API (20 MSPS without overlock, compared to ~10 MSPS stock)
• Xilinx Zynq SoC overclock support (27.5 MSPS achieved with overclock to 1100 MHz CPU + 750 MHz DDR)
• Use LVDS mode for AD9361 to support max sampling rates in 2T2R mode
• Based on PlutoSDR v0.38 firmware (Nov 17, 2023)
• Prebuilt firmware with different overclocking options

Read more here.

Support

To support bandwidths higher than 6MHz a new release of SDR Console is required, so keep an eye out for announcements.