div class=ts-pagebutton class=gotoPage data-page=1Page 1button div class=ts-imageimg data-url=steves-antique-the-546-a-and-650-use-a-3ap1-cathode-ray-tube-model-655-uses-ahtmlpage=1 data-page=1 class=ts-thumb lazyload alt=Page 1: Steves Antique TechnologyThe 546-A and 650 use a 3AP1 cathode- ray tube Model 655 uses a 5CPI-A a 5-inch cathode-ray tube This necessitates use of 63-volt filament winding in loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader030vdocumentinreader030viewer20220130225f8f1ffa4e54fe37ad4d67b6html5thumbnails1jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=2Page 2button div class=ts-imageimg data-url=steves-antique-the-546-a-and-650-use-a-3ap1-cathode-ray-tube-model-655-uses-ahtmlpage=2 data-page=2 class=ts-thumb lazyload alt=Page 2: Steves Antique TechnologyThe 546-A and 650 use a 3AP1 cathode- ray tube Model 655 uses a 5CPI-A a 5-inch cathode-ray tube This necessitates use of 63-volt filament winding in loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader030vdocumentinreader030viewer20220130225f8f1ffa4e54fe37ad4d67b6html5thumbnails2jpg width=140 height=200 divdiv