Hammarlund was most famous for its amateur/short-wave receiver lines such as the Super Pro series and the HQ series (which includes the HQ-100, 110, 120, 129, 145, 150, 160, 170, 180, 200 and 215) a number of transmitters were also produced. These saw only limited use until Hammarlund entered the market with single-sideband equipment. In 1960 the HX-500 was introduced; this was a table-top, 100 watt output, single-sideband transmitter which also had FM and FSK transmission capability, along with the later HX-50. In 1964 the company produced a table-top linear amplifier, the HXL-1
