div class=ts-pagebuttonPage 1button div class=ts-image a href=https:reader042vdocumentsusreader042viewer20220119095f666a6e6f1dbd1e98538ed1html5page1jpg target=_blank amp-img class=ts-thumb alt=Page 1: Steves Antique Technology · The schematic circuit diagram for Model RFO-5 including tube complement and tube functions is shown in Fig 22-31 This instrument is a combined oscilloscope src=https:reader042vdocumentsusreader042viewer20220119095f666a6e6f1dbd1e98538ed1html5thumbnails1jpg width=142 height=106 layout=responsive amp-imga divdiv