<html><head></head><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px"><div id="yui_3_16_0_ym19_1_1490354520805_17629"><span id="yui_3_16_0_ym19_1_1490354520805_17628">YEP.. Thats what my SB 220 has</span></div><div id="yui_3_16_0_ym19_1_1490354520805_17609"><span><br></span></div><div id="yui_3_16_0_ym19_1_1490354520805_17605"><span id="yui_3_16_0_ym19_1_1490354520805_17630">Jerry</span></div><div id="yui_3_16_0_ym19_1_1490354520805_17606"><span>W3CDE</span></div> <div class="qtdSeparateBR"><br><br></div><div class="yahoo_quoted" style="display: block;"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div dir="ltr"><font size="2" face="Arial"> On Thursday, March 23, 2017 8:21 PM, John King via Heath <heath@puck.nether.net> wrote:<br></font></div> <br><br> <div class="y_msg_container"><div id="yiv9840038512"><div><div style="color:#000;background-color:#fff;font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:12px;"><div id="yiv9840038512yui_3_16_0_ym19_1_1490292212846_4980" dir="ltr">I have a number of kw rated amps, one of which is a Hath SB 221, and when keyed up, with Zero driv, has an idling plate current of 140 ma.. I have looked up the specs for the Eimac 3-500Z but my tubes are Chinese 3-500 ZG tubes. I think 140 ma is about right for two tubes???<br></div><div dir="ltr" id="yiv9840038512yui_3_16_0_ym19_1_1490292212846_5145"><br></div><div dir="ltr" id="yiv9840038512yui_3_16_0_ym19_1_1490292212846_5252">I am asking about the plate current meter readings of YOUR SB SB221/220 amplifier keyed up with NO RF DRIVE. My 140 ma plate current keyed up with Zero drive sounds about correct but I would like what you are experiencing with your amp keyed up with no drive . Thanks and 73, John, K5PGW<br></div></div></div></div>_______________________________________________<br>Heath mailing list<br><a ymailto="mailto:Heath@puck.nether.net" href="mailto:Heath@puck.nether.net">Heath@puck.nether.net</a><br><a href="https://puck.nether.net/mailman/listinfo/heath" target="_blank">https://puck.nether.net/mailman/listinfo/heath</a><br><br><br></div> </div> </div> </div></div></body></html>