<html><head></head><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue-Light, Helvetica Neue Light, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px"><div id="yui_3_16_0_1_1470682560702_10390" dir="ltr"><span>Are the "S" meters in the other equipment set for S-9 = 50-microvolts? A goodly number of "modern" equipment have their "S" meters calibrated for a much lower signal strength for S-9 and are not well calibrated for the "dB over" readings.</span></div><div id="yui_3_16_0_1_1470682560702_10390" dir="ltr"><span><br></span></div><div id="yui_3_16_0_1_1470682560702_10390" dir="ltr"><span><br></span></div><div id="yui_3_16_0_1_1470682560702_10390" dir="ltr">All of my "S" meters are set for S-9 = 50-microvolts and not that many signals reach 20 dB over on my meters. In fact, there are a lot of signals that don't even reach S-9!</div><div id="yui_3_16_0_1_1470682560702_10390" dir="ltr"><br></div><div id="yui_3_16_0_1_1470682560702_10390" dir="ltr"><br></div><div id="yui_3_16_0_1_1470682560702_10390" dir="ltr">I will check my HR-20 and see what I get for "S" meter readings. If I remember correctly, there are not that many signals that do go over S-9 and most register well below S-9.</div><div id="yui_3_16_0_1_1470682560702_10390" dir="ltr"><br></div><div id="yui_3_16_0_1_1470682560702_10390" dir="ltr"><br></div><div id="yui_3_16_0_1_1470682560702_10390" dir="ltr">You really need a signal generator with a well calibrated attenuator to verify the sensitivity of your receiver.</div><div id="yui_3_16_0_1_1470682560702_10390" dir="ltr"><br></div><div id="yui_3_16_0_1_1470682560702_10390" dir="ltr"><br></div><div></div><div id="yui_3_16_0_1_1470682560702_10389"> </div><div class="signature" id="yui_3_16_0_1_1470682560702_10388">Glen, K9STH </div><div class="signature" id="yui_3_16_0_1_1470682560702_10388"><br></div><div class="signature" id="yui_3_16_0_1_1470682560702_10388">Website: http://k9sth.net</div><div class="qtdSeparateBR" id="yui_3_16_0_1_1470682560702_10387"><br><br></div><div class="yahoo_quoted" id="yui_3_16_0_1_1470682560702_10465" style="display: block;"> <div style="font-family: HelveticaNeue-Light, Helvetica Neue Light, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;" id="yui_3_16_0_1_1470682560702_10464"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;" id="yui_3_16_0_1_1470682560702_10463"> <div dir="ltr" id="yui_3_16_0_1_1470682560702_10462"> <font size="2" face="Arial" id="yui_3_16_0_1_1470682560702_10466"> <hr size="1" id="yui_3_16_0_1_1470682560702_10704"> <b><span style="font-weight:bold;">From:</span></b> Alexander N. Gerli <ac1wye@gmail.com><br> <b><span style="font-weight: bold;">To:</span></b> heathkit@mailman.qth.net; heath@puck.nether.net; heathkit@yahoogroups.com <br> <b><span style="font-weight: bold;">Sent:</span></b> Sunday, August 7, 2016 2:02 PM<br> <b><span style="font-weight: bold;">Subject:</span></b> [Heath] Weak S-Meter on HR-20 Rcvr<br> </font> </div> <div class="y_msg_container" id="yui_3_16_0_1_1470682560702_10471"><br><div id="yiv9778696789">Hello, Folks! My little HR-20 Rcvr works really well after a good realignment, BUT the S-Meter is very stingy. Sigs that are +20dB on a properly set-up rig are maybe S7 on the HR-20. Sigs less than S9 on my other rigs, barely flicker the S-Meter. I thought that the S-Meter amp tube was soft, but it's OK after subsritution, so I'm not sure where to start looking. I suspect that some of these older components have changed out-of-tolerance, but where's a good place to start measuring? The HR-20's S-Meter zero pot was dirty but now zeroes perfectly after cleaning, and the Antenna tuning cap is peaked before reading.<div id="yui_3_16_0_1_1470682560702_10485"><br></div><div id="yui_3_16_0_1_1470682560702_10689"><br></div></div></div> </div> </div> </div></div></body></html>