You definitely can get SDR transceivers but 1) they are more expensive and not (to my knowledge) 'dongle' sized, and 2) in most jurisdictions there are understandably licensing conditions required in order to be permitted to transmit on the amateur frequencies.
If anyone with experience on SDR transceivers has some input here, that would be great!
If anyone with experience on SDR transceivers has some input here, that would be great!