GE KL-70 radio loop antenna "beam-a-scope" 13m, 19m, 25m, 31m 7 tubes: 6SK7, 6SA7, 6SK7, 6SQ7, 6U5, 6F6G, 5Y4G two 6SK7 for RF (Radio Frequency) and IF (Intermediate Frequency) amplifier 6SQ7 for detector, AVC (Automatic Volume Control) and first audio 6SA7 converter, converts incoming RF signals to IF 6F6G for audio out, drives speaker 6U5 tuning eye or magic eye, shows signal strength (or 6G5) 5Y4G for rectifier, convert AC to DC to power radio (or 5X4) note that the rectifier tube gets quite hot phono input can be used to play audio from analog turntables on radio speaker This radio can receive AM radio and 5 shortwave bands 6 buttons, leftmost button is labeled "Tele FM Phono" The other 5 buttons are for selecting preset radio stations original preset stations WGR, CKCL, CBL, CFRB