I recently got in contact with Atsushi Yokoyama (JN1SDD) regarding his project to produce software for monitoring beacons using the HF lite sdr kit and the electrically switched BPF. He informed me that he wasn’t ready to release the code for others to use just yet as it needed a bit of a tidy up. But, he has opened up a sourceforge project to release it when its good and ready.
There is an interview conducted by Tobias (DH1TW) that gives a load more detail if you’re interested.
Now all I need is a working HF lite (Mine is no longer a happy sdr, may have been damaged when I moved the garage around) and an electrically switch BPF kit. These seem to be as rare as hens teeth!