The Hammarlund HQ-100AC general coverage receiver with analog display. It tunes shortwave in four bands: .54-1.6, 1.6-4, 4-10, 10-30 MHz and 20 meter bandspread. Other enhancements include: antenna trimmer, noise limiter, RF gain, S-meter, BFO, stand-by and AVC on/off. This radio does not have a built in speaker. There are 3.2 ohm speaker terminals on the rear panel. The suggested optional speaker is the S-100.
The Hammarlund HQ-100A is the same, but without the built-in 24 hour clock-timer.