The company's first full featured transmitter, the DX-100, appeared in 1956. It filled two facing catalog pages, indicating Heathkit's seriousness in building kits for amateurs. The description noted that it was “amateur designed” – meant to convey expertise in designing specifically for the amateur radio operator - not the usual sense of the term amateur. And it stated that “amateurs in the field are enthusiastic about praising its performance under actual operating conditions”, indicating that it had been through what we would call beta testing today.