<html><head></head><body><div style="color:#000; background-color:#fff; font-family:Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px"><div dir="ltr" id="yui_3_16_0_ym19_1_1536521421009_7717"><span id="yui_3_16_0_ym19_1_1536521421009_7718">Looking at the schematic (I don't have a KL-1 nor have I worked on one), from Pin-1 of the 4-400A, which is one side of the filament (which is the cathode in the 4-400A), there is a direct connection to ground. It might be possible to move the meter from the B+ to where this jumper is located. That is, the ground connection would go through the meter.</span></div><div dir="ltr" id="yui_3_16_0_ym19_1_1536521421009_7716"><span><br></span></div><div dir="ltr" id="yui_3_16_0_ym19_1_1536521421009_7715"><span><br></span></div><div dir="ltr" id="yui_3_16_0_ym19_1_1536521421009_7685"><span><br></span></div><div dir="ltr" id="yui_3_16_0_ym19_1_1536521421009_7680"><span id="yui_3_16_0_ym19_1_1536521421009_7684">You would have to bypass Pin-1 to ground using a capacitor. Also, a capacitor on the + side of the meter to ground.</span></div><div dir="ltr" id="yui_3_16_0_ym19_1_1536521421009_7681"><span><br></span></div><div dir="ltr" id="yui_3_16_0_ym19_1_1536521421009_7682"><span><br></span></div><div dir="ltr" id="yui_3_16_0_ym19_1_1536521421009_7683"><span><br></span></div><div dir="ltr" id="yui_3_16_0_ym19_1_1536521421009_7687"><span id="yui_3_16_0_ym19_1_1536521421009_7686">In the moved condition, the meter would read cathode current (this is done in most transmitters) which also includes the screen current. When the KL-1 was made, the regulations were for plate input power and by having the meter directly in the plate line, the reading was more accurate and higher power could be run since the screen current did not have to be estimated. Today, the regulations are for power output so absolute accuracy of input power is no longer required.</span></div><div dir="ltr" id="yui_3_16_0_ym19_1_1536521421009_7688"><span><br></span></div><div dir="ltr" id="yui_3_16_0_ym19_1_1536521421009_7689"><span><br></span></div><div></div><div id="yui_3_16_0_ym19_1_1536521421009_7690"> </div><div class="signature" id="yui_3_16_0_ym19_1_1536521421009_7380">Glen, K9STH </div><div class="signature" id="yui_3_16_0_ym19_1_1536521421009_7380"><br></div><div class="signature" id="yui_3_16_0_ym19_1_1536521421009_7380">Website: http://k9sth.net</div><div class="qtdSeparateBR" id="yui_3_16_0_ym19_1_1536521421009_7381"><br><br></div><div class="yahoo_quoted" style="display: block;"> <div style="font-family: 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"> <hr size="1"> <b><span style="font-weight:bold;">From:</span></b> John King via Heath <heath@puck.nether.net><br> <b><span style="font-weight: bold;">To:</span></b> Heathkit List <heath@puck.nether.net> <br> <b><span style="font-weight: bold;">Sent:</span></b> Sunday, September 9, 2018 12:32 PM<br> <b><span style="font-weight: bold;">Subject:</span></b> [Heath] HV modification of Chippewa KL1<br> </font> </div> <div class="y_msg_container"><br><div id="yiv1915197152"><div><div style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px;"><div style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px;"><span><div><div class="yiv1915197152ydp27c3ab20msg-body yiv1915197152ydp27c3ab20P_wpofO yiv1915197152ydp27c3ab20iy_A"><div class="yiv1915197152ydp27c3ab20jb_0 yiv1915197152ydp27c3ab20X_6MGW yiv1915197152ydp27c3ab20N_6Fd5"><div><div id="yiv1915197152ydp27c3ab20yiv0495426898"><div><div style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px;"><div>Has
anyone modified the High Voltage metering circuit of the Heath Chippewa
KL1 amplifier to take the HV from direct connection to the HV meter. I
am looking for a modification to make the amplifier that I just acquired
safer by getting the 3,000 vdc plus off the HV panel meter. Thanks and
73, John, K5PGW<br></div></div></div></div></div></div></div></div><span class="yiv1915197152ydp27c3ab20em_N yiv1915197152ydp27c3ab20en_N"></span></span></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>