Is everyone moving to DRM broadcasting? Depending on the bandwidth selected for a particular band, a station could support having both the original analog signa

Is everyone moving to DRM broadcasting? Depending on the bandwidth selected for a particular band, a station could support having both the original analog signal and a digital sideband signal. Simulcast seems like the best way to roll this out, everyone with old receivers can still get the same signals but those willing to invest the money can get nice clear voice over digital. In the US, we have HD Radio that sits in the sideband of standard VHF radio stations. Some car radios support this mode so you can browse to the other subchannels (news, traffic, weather, gospel music, Spanish radio, etc) but when the signal degrades, it switches back to the analog signal. Some of these digital radio standards are open which means you can build your own receiver using an SDR dongle and some software (dedicated software or GNURadio). Building software modems are pretty fun, you get to ignore the issues with analog circuit design and can solely focus on block diagrams.