The Hammarlund HQ-145 general coverage receiver tunes medium wave and shortwave in four bands: .54-1.6, 1.6-4, 4-10, 10-30 MHz. Other enhancements include: antenna trimmer, noise limiter, Slot Filter, Flywheel Tuning, RF gain, S-meter, stand-by and AVC (Off/Slow/Medium/Fast). 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-200. 117 VAC 60 Hz. 19 x 10.5 x 13 inches.