Philips n3w24t .80 radio: Main principle Superheterodyne (common); ZF/IF 460 kHz Tuned circuits 7 AM circuit(s) Wave bands Broadcast (MW) and Long Wave. Power type and voltage Storage Battery for all (e.g. for car radios and amateur radios) / 6; 12 Volt Loudspeaker - This model requires external speaker(s). Power out 2 W (unknown quality) Material Metal case Shape Chassis only or for «building in» Dimensions (WHD) 181 x 54 x 142 mm / 7.1 x 2.1 x 5.6 inch Net weight (2.2 lb = 1 kg) 1.750 kg / 3 lb 13.7 oz (3.855 lb) nr 2 Philips 22rn216 1970 Main principle Superheterodyne (common); ZF/IF 452 kHz Wave bands Broadcast only (MW). Power type and voltage Storage Battery for all (e.g. for car radios and amateur radios) / 12 Volt Loudspeaker - This model requires external speaker(s). Material Metal case from Radiomuseum.org Model: 22RN216 /00 - Philips; Eindhoven tubes Shape Chassis only or for «building in» Dimensions (WHD) 178 x 41 x 82 mm / 7 x 1.6 x 3.2 inch Notes Wave range: MW: 515 - 1622 kHz. not tested will be well packed