div class=trans-pagebutton class=gotoPage data-page=1Page 1button div class=trans-imageimg data-url=documentlowell-digisonde-international-manufactures-and-markets-the-digisonde-portable-sounder-4dhtmlpage=1 data-page=1 class=trans-thumb lazyload alt=Page 1: digisondecomLowell Digisonde International manufactures and markets the Digisonde-Portable-Sounder-4D DPS4D the latest model in the DIGISONDE@ series of advanced ionosondes built loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader033fdocumentsusreader033viewer2022051921600e2aef0bd580654957d6e3html5thumbnails1jpg width=140 height=200 divdivdiv class=trans-pagebutton class=gotoPage data-page=2Page 2button div class=trans-imageimg data-url=documentlowell-digisonde-international-manufactures-and-markets-the-digisonde-portable-sounder-4dhtmlpage=2 data-page=2 class=trans-thumb lazyload alt=Page 2: digisondecomLowell Digisonde International manufactures and markets the Digisonde-Portable-Sounder-4D DPS4D the latest model in the DIGISONDE@ series of advanced ionosondes built loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader033fdocumentsusreader033viewer2022051921600e2aef0bd580654957d6e3html5thumbnails2jpg width=140 height=200 divdivdiv class=trans-pagebutton class=gotoPage data-page=3Page 3button div class=trans-imageimg data-url=documentlowell-digisonde-international-manufactures-and-markets-the-digisonde-portable-sounder-4dhtmlpage=3 data-page=3 class=trans-thumb lazyload alt=Page 3: digisondecomLowell Digisonde International manufactures and markets the Digisonde-Portable-Sounder-4D DPS4D the latest model in the DIGISONDE@ series of advanced ionosondes built loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII=...