div class=ts-pagebutton class=gotoPage data-page=1Page 1button div class=ts-imageimg data-url=the-cool-sound-of-tubes-ieee-spectrum-as-receiving-tubes-but-now-called-simplyhtmlpage=1 data-page=1 class=ts-thumb lazyload alt=Page 1: The Cool Sound of Tubes - IEEE Spectrum · · 2016-12-19known as receiving tubes but now called simply tubes but from Asia In Japan Taiwan and mainland China in industrial loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader031vdocumentinreader031viewer20220225175b0a7df97f8b9a604c8c809ehtml5thumbnails1jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=2Page 2button div class=ts-imageimg data-url=the-cool-sound-of-tubes-ieee-spectrum-as-receiving-tubes-but-now-called-simplyhtmlpage=2 data-page=2 class=ts-thumb lazyload alt=Page 2: The Cool Sound of Tubes - IEEE Spectrum · · 2016-12-19known as receiving tubes but now called simply tubes but from Asia In Japan Taiwan and mainland China in industrial loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader031vdocumentinreader031viewer20220225175b0a7df97f8b9a604c8c809ehtml5thumbnails2jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=3Page 3button div class=ts-imageimg data-url=the-cool-sound-of-tubes-ieee-spectrum-as-receiving-tubes-but-now-called-simplyhtmlpage=3 data-page=3 class=ts-thumb lazyload alt=Page 3: The Cool Sound of Tubes - IEEE Spectrum · · 2016-12-19known as receiving tubes but now called simply tubes but from Asia In Japan Taiwan and mainland China in industrial loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader031vdocumentinreader031viewer20220225175b0a7df97f8b9a604c8c809ehtml5thumbnails3jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=4Page 4button div class=ts-imageimg data-url=the-cool-sound-of-tubes-ieee-spectrum-as-receiving-tubes-but-now-called-simplyhtmlpage=4 data-page=4 class=ts-thumb lazyload alt=Page 4: The Cool Sound of Tubes - IEEE Spectrum · · 2016-12-19known as receiving tubes but now called simply tubes but from Asia In Japan Taiwan and mainland China in industrial loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader031vdocumentinreader031viewer20220225175b0a7df97f8b9a604c8c809ehtml5thumbnails4jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=5Page 5button div class=ts-imageimg data-url=the-cool-sound-of-tubes-ieee-spectrum-as-receiving-tubes-but-now-called-simplyhtmlpage=5 data-page=5 class=ts-thumb lazyload alt=Page 5: The Cool Sound of Tubes - IEEE Spectrum · · 2016-12-19known as receiving tubes but now called simply tubes but from Asia In Japan Taiwan and mainland China in industrial loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader031vdocumentinreader031viewer20220225175b0a7df97f8b9a604c8c809ehtml5thumbnails5jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=6Page 6button div class=ts-imageimg data-url=the-cool-sound-of-tubes-ieee-spectrum-as-receiving-tubes-but-now-called-simplyhtmlpage=6 data-page=6 class=ts-thumb lazyload alt=Page 6: The Cool Sound of Tubes - IEEE Spectrum · · 2016-12-19known as receiving tubes but now called simply tubes but from Asia In Japan Taiwan and mainland China in industrial loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader031vdocumentinreader031viewer20220225175b0a7df97f8b9a604c8c809ehtml5thumbnails6jpg width=140 height=200 divdiv
