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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><font size=3 face="Times New Roman"><span style='font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Times New Roman","serif";mso-bidi-font-family:"Times New Roman"'>Some time back, there was a discussion somewhere on what tubes were good for 1920s radios.<span style='mso-spacerun:yes'>  </span>The list on page 76 of the aforementioned handbook might be of interested to the collective readership for that.<o:p></o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Times New Roman","serif";mso-bidi-font-family:"Times New Roman"'><o:p> </o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Times New Roman","serif";mso-bidi-font-family:"Times New Roman"'>They are as follows:<o:p></o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Times New Roman","serif";mso-bidi-font-family:"Times New Roman"'>UX-112<o:p></o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Times New Roman","serif";mso-bidi-font-family:"Times New Roman"'>UX-120<o:p></o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Times New Roman","serif";mso-bidi-font-family:"Times New Roman"'>UX-171-A<o:p></o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Times New Roman","serif";mso-bidi-font-family:"Times New Roman"'>UX-199<o:p></o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Times New Roman","serif";mso-bidi-font-family:"Times New Roman"'>UX-201-A<o:p></o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Times New Roman","serif";mso-bidi-font-family:"Times New Roman"'>UV-203-A<o:p></o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Times New Roman","serif";mso-bidi-font-family:"Times New Roman"'>UV-204-A<o:p></o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Times New Roman","serif";mso-bidi-font-family:"Times New Roman"'>UV-206<o:p></o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Times New Roman","serif";mso-bidi-font-family:"Times New Roman"'>UX-210<o:p></o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Times New Roman","serif";mso-bidi-font-family:"Times New Roman"'>UV-211<o:p></o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Times New Roman","serif";mso-bidi-font-family:"Times New Roman"'>UX-222<o:p></o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Times New Roman","serif";mso-bidi-font-family:"Times New Roman"'>UY-224<o:p></o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Times New Roman","serif";mso-bidi-font-family:"Times New Roman"'>UY-227<o:p></o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Times New Roman","serif";mso-bidi-font-family:"Times New Roman"'>UX-240<o:p></o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Times New Roman","serif";mso-bidi-font-family:"Times New Roman"'>UX-245<o:p></o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Times New Roman","serif";mso-bidi-font-family:"Times New Roman"'>UX-250<o:p></o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Times New Roman","serif";mso-bidi-font-family:"Times New Roman"'>UX-841<o:p></o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Times New Roman","serif";mso-bidi-font-family:"Times New Roman"'>UX-842<o:p></o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Times New Roman","serif";mso-bidi-font-family:"Times New Roman"'>UX-845<o:p></o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Times New Roman","serif";mso-bidi-font-family:"Times New Roman"'>WE-211A<o:p></o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Times New Roman","serif";mso-bidi-font-family:"Times New Roman"'>WE-211D<o:p></o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Times New Roman","serif";mso-bidi-font-family:"Times New Roman"'>WE-212A<o:p></o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Times New Roman","serif";mso-bidi-font-family:"Times New Roman"'>WE-212D<o:p></o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Times New Roman","serif";mso-bidi-font-family:"Times New Roman"'>WE-215A<o:p></o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Times New Roman","serif";mso-bidi-font-family:"Times New Roman"'><o:p> </o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Times New Roman","serif";mso-bidi-font-family:"Times New Roman"'>Plus the following rectifiers:<o:p></o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Times New Roman","serif";mso-bidi-font-family:"Times New Roman"'>UX-213<o:p></o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Times New Roman","serif";mso-bidi-font-family:"Times New Roman"'>UX-216B<o:p></o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Times New Roman","serif";mso-bidi-font-family:"Times New Roman"'>UV-217A<o:p></o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Times New Roman","serif";mso-bidi-font-family:"Times New Roman"'>UV-217C<o:p></o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Times New Roman","serif";mso-bidi-font-family:"Times New Roman"'>UX-280<o:p></o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Times New Roman","serif";mso-bidi-font-family:"Times New Roman"'>UX-281<o:p></o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Times New Roman","serif";mso-bidi-font-family:"Times New Roman"'>UX-866<o:p></o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Times New Roman","serif";mso-bidi-font-family:"Times New Roman"'>UX-872<o:p></o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Times New Roman","serif";mso-bidi-font-family:"Times New Roman"'>UX-874<o:p></o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Times New Roman","serif";mso-bidi-font-family:"Times New Roman"'><o:p> </o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Times New Roman","serif";mso-bidi-font-family:"Times New Roman"'>And these ballast tubes:<o:p></o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Times New Roman","serif";mso-bidi-font-family:"Times New Roman"'>UV-876<o:p></o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Times New Roman","serif";mso-bidi-font-family:"Times New Roman"'>UV-886<o:p></o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Times New Roman","serif";mso-bidi-font-family:"Times New Roman"'><o:p> </o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Times New Roman","serif";mso-bidi-font-family:"Times New Roman"'>From a footnote: ‘Many of the “U” tubes are duplicated in “C” numbers one hundred higher’<o:p></o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Times New Roman","serif";mso-bidi-font-family:"Times New Roman"'><o:p> </o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Times New Roman","serif";mso-bidi-font-family:"Times New Roman"'>An RCA ad adds the following to the list:<o:p></o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Times New Roman","serif";mso-bidi-font-family:"Times New Roman"'>WD-11<o:p></o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Times New Roman","serif";mso-bidi-font-family:"Times New Roman"'>WX-12<o:p></o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Times New Roman","serif";mso-bidi-font-family:"Times New Roman"'>UX-112-A<o:p></o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Times New Roman","serif";mso-bidi-font-family:"Times New Roman"'>UV-199<o:p></o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Times New Roman","serif";mso-bidi-font-family:"Times New Roman"'>UX-200-A<o:p></o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Times New Roman","serif";mso-bidi-font-family:"Times New Roman"'>UX-226<o:p></o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Times New Roman","serif";mso-bidi-font-family:"Times New Roman"'>UV-849<o:p></o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Times New Roman","serif";mso-bidi-font-family:"Times New Roman"'>UV-851<o:p></o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Times New Roman","serif";mso-bidi-font-family:"Times New Roman"'>UX-852<o:p></o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Times New Roman","serif";mso-bidi-font-family:"Times New Roman"'>UX-860<o:p></o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Times New Roman","serif";mso-bidi-font-family:"Times New Roman"'>UX-861<o:p></o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Times New Roman","serif";mso-bidi-font-family:"Times New Roman"'>UX-865<o:p></o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Times New Roman","serif";mso-bidi-font-family:"Times New Roman"'><o:p> </o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Times New Roman","serif";mso-bidi-font-family:"Times New Roman"'>Plus the following rectifier:<o:p></o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Times New Roman","serif";mso-bidi-font-family:"Times New Roman"'>UV-1651<o:p></o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Times New Roman","serif";mso-bidi-font-family:"Times New Roman"'><o:p> </o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Times New Roman","serif";mso-bidi-font-family:"Times New Roman"'>“and others” to quote from the same ad.<o:p></o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Times New Roman","serif";mso-bidi-font-family:"Times New Roman"'><o:p> </o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt;font-family:"Times New Roman","serif";mso-fareast-font-family:"Times New Roman";mso-no-proof:yes'>Best regards,<o:p></o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt;font-family:"Times New Roman","serif";mso-fareast-font-family:"Times New Roman";mso-no-proof:yes'> <o:p></o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt;font-family:"Times New Roman","serif";mso-fareast-font-family:"Times New Roman";mso-no-proof:yes'>Michael, WH7HG BL01xh WPE3ARS, ex-KN3MXO, ex-K3MXO A&P PP BGI LS/MFT<o:p></o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt;font-family:"Times New Roman","serif";mso-fareast-font-family:"Times New Roman";mso-no-proof:yes'>Whirled Infamous Author and all around really strange person<br><a href="http://www.nationalmssociety.org/chapters/NTH/index.aspx"><font color=blue><span style='color:blue'>http://www.nationalmssociety.org/chapters/NTH/index.aspx</span></font></a> <o:p></o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt;font-family:"Times New Roman","serif";mso-fareast-font-family:"Times New Roman";mso-no-proof:yes'><a href="http://wh7hg.blogspot.com/"><font color=blue><span style='color:blue'>http://wh7hg.blogspot.com/</span></font></a> <br><a href="http://kludges-other-blog.blogspot.com/"><font color=blue><span style='color:blue'>http://kludges-other-blog.blogspot.com</span></font></a> <br>Hiki Nô! <o:p></o:p></span></font></p></div></body></html>