Is this project still a thing? I tried doing similar a few years ago using DReaM as the encoder, piped into ST to generate the baseband. The AM version of DRM actually fits within the standard 67kHz SCA section. (+/-5khz)
Indeed it does, and in GNURadio I was able to utilize a mode A 20Khz signal in the SCA space. I don't quite remember how, but it was rather convoluted and used several different custom blocks which I don't think are maintained anymore. This project is no longer a thing, I'm afraid. Moved on to doing CQUAM (which is complete, and available on my git), and some ATSC stuff.
I looked, and I don't have any of the original GRC files, either.
At least the repo has been taken offline..
Yeah. The only two projects I have
, are ATSC patches for Opencaster, and my completed CQUAM graph which works with Stereo Tool.
The chief reason I dropped the project, was lack of a VHF transmitter to test with. I had a BladeRF, which was great for testing TV projects, but not so much for FM-based testing. I'd love to get into it again, though I'd shoot for my own digital system as opposed to DRM/IBOC.