The Kenwood PS-20 QRP power supply provides 13.8 VDC at 4.5 Amps intermittent or 4 Amps continuous. Ripple voltage is less than 5 mW at 13.8VDC 4 Amps. Input is 120/220 VAC 100W. The rear panel has a 110/220VAC input slide switch and output terminals.
4.9 x 3.8 x 9.4 inches 8.4 lbs. (123x96x235 mm 3.8 kg). This power supply is compatible with the TS-660.