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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple style='tab-interval:.5in'><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-font-family:"Times New Roman";color:#1F497D'>I just want to say thank you to everyone that offered suggestions.<span style='mso-spacerun:yes'> </span>There were a couple Web links that I hadn’t found that might be useful. Again, thanks to all.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-font-family:"Times New Roman";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-font-family:"Times New Roman";color:#1F497D'>73,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-font-family:"Times New Roman";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-font-family:"Times New Roman";color:#1F497D'>George, KC1V<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-font-family:"Times New Roman";color:#1F497D'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";mso-fareast-font-family:"Times New Roman"'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";mso-fareast-font-family:"Times New Roman"'> Heath [mailto:heath-bounces@puck.nether.net] <b>On Behalf Of </b>George Collins<br><b>Sent:</b> Sunday, August 09, 2015 8:04 PM<br><b>To:</b> Heath@puck.nether.net<br><b>Subject:</b> [Heath] Gettering 572B's for a Heathkit SB-200<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p><span style='font-family:"Arial","sans-serif"'>Hello Group,</span><o:p></o:p></p><p><span style='font-family:"Arial","sans-serif"'>I have a few 572B’s that having been unused for unknown lengths of time, probably several years. It is possible to getter this tubes be for putting them into service in order to avoid arcing or flash over? Are there any other measures that can be taken with the 572B’s to avoid failures at startup? I plan to use these tubes in an SB-200 amp. The amp is working now, but the tubes are weak. The replacements I have are either New Old Stock or “good” used.</span><o:p></o:p></p><p><span style='font-family:"Arial","sans-serif"'>Thanks and 73,</span><o:p></o:p></p><p><span style='font-family:"Arial","sans-serif"'>George, KC1V</span><o:p></o:p></p></div></body></html>