SCA will need a receiver modified for SCA reception. SCA receivers are often fixed frequency. And these SCA services were for subscribers. And are you sure the SCA for KUHF is still in use?. Most NPR outlets who use SCA usually have radio reading services for the visually impaired on them. Also, I know of no receiver or tuner which has HD capability and SCA capability. HD is getting harder to find home tuners for outside of automotive radios.