<html><head></head><body><div style="color:#000; background-color:#fff; font-family:Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:13px"><div id="yui_3_16_0_ym19_1_1470778938707_17610">Guys,</div><div id="yui_3_16_0_ym19_1_1470778938707_17411" dir="ltr">Since the S Meter in this box is measuring the AVC voltage, I would look there (V5) as have low conduction. While the meter circuit has a calibrating pot, it is also possible that this component has gone high resistance. I like using Caig Blue (preferred) or Red available from MCM to spray these devices.</div><div id="yui_3_16_0_ym19_1_1470778938707_17853" dir="ltr">Please don't rule out that the jewels in the meter might also be dirty.</div><div id="yui_3_16_0_ym19_1_1470778938707_17854" dir="ltr">Al</div><div id="yui_3_16_0_ym19_1_1470778938707_17855" dir="ltr">WB9UVJ<br></div><div id="yui_3_16_0_ym19_1_1470778938707_17220"><span></span></div> <div class="qtdSeparateBR"><br><br></div><div style="display: block;" class="yahoo_quoted"> <div style="font-family: Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 13px;"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div dir="ltr"><font face="Arial" size="2"> On Tuesday, August 9, 2016 11:00 AM, "heath-request@puck.nether.net" <heath-request@puck.nether.net> wrote:<br></font></div> <br><br> <div class="y_msg_container">Send Heath mailing list submissions to<br> <a ymailto="mailto:heath@puck.nether.net" href="mailto:heath@puck.nether.net">heath@puck.nether.net</a><br><br>To subscribe or unsubscribe via the World Wide Web, visit<br> <a href="https://puck.nether.net/mailman/listinfo/heath" target="_blank">https://puck.nether.net/mailman/listinfo/heath</a><br>or, via email, send a message with subject or body 'help' to<br> <a ymailto="mailto:heath-request@puck.nether.net" href="mailto:heath-request@puck.nether.net">heath-request@puck.nether.net</a><br><br>You can reach the person managing the list at<br> <a ymailto="mailto:heath-owner@puck.nether.net" href="mailto:heath-owner@puck.nether.net">heath-owner@puck.nether.net</a><br><br>When replying, please edit your Subject line so it is more specific<br>than "Re: Contents of Heath digest..."<br><br><br>Today's Topics:<br><br> 1. Re: Weak S-Meter on HR-20 Rcvr (Glen Zook)<br><br><br>----------------------------------------------------------------------<br><br>Message: 1<br>Date: Mon, 8 Aug 2016 19:07:33 +0000 (UTC)<br>From: Glen Zook <<a ymailto="mailto:gzook@yahoo.com" href="mailto:gzook@yahoo.com">gzook@yahoo.com</a>><br>To: "Alexander N. Gerli" <<a ymailto="mailto:ac1wye@gmail.com" href="mailto:ac1wye@gmail.com">ac1wye@gmail.com</a>>,<br> "<a ymailto="mailto:heathkit@mailman.qth.net" href="mailto:heathkit@mailman.qth.net">heathkit@mailman.qth.net</a>" <<a ymailto="mailto:heathkit@mailman.qth.net" href="mailto:heathkit@mailman.qth.net">heathkit@mailman.qth.net</a>>,<br> "<a ymailto="mailto:heath@puck.nether.net" href="mailto:heath@puck.nether.net">heath@puck.nether.net</a>" <<a ymailto="mailto:heath@puck.nether.net" href="mailto:heath@puck.nether.net">heath@puck.nether.net</a>><br>Subject: Re: [Heath] Weak S-Meter on HR-20 Rcvr<br>Message-ID:<br> <<a ymailto="mailto:1542781660.13770627.1470683253598.JavaMail.yahoo@mail.yahoo.com" href="mailto:1542781660.13770627.1470683253598.JavaMail.yahoo@mail.yahoo.com">1542781660.13770627.1470683253598.JavaMail.yahoo@mail.yahoo.com</a>><br>Content-Type: text/plain; charset="utf-8"<br><br>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.<br><br>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!<br><br>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.<br><br>You really need a signal generator with a well calibrated attenuator to verify the sensitivity of your receiver.<br><br>?Glen, K9STH?<br>Website: <a href="http://k9sth.net/" target="_blank">http://k9sth.net</a><br><br> From: Alexander N. Gerli <<a ymailto="mailto:ac1wye@gmail.com" href="mailto:ac1wye@gmail.com">ac1wye@gmail.com</a>><br> To: <a ymailto="mailto:heathkit@mailman.qth.net" href="mailto:heathkit@mailman.qth.net">heathkit@mailman.qth.net</a>; <a ymailto="mailto:heath@puck.nether.net" href="mailto:heath@puck.nether.net">heath@puck.nether.net</a>; <a ymailto="mailto:heathkit@yahoogroups.com" href="mailto:heathkit@yahoogroups.com">heathkit@yahoogroups.com</a> <br> Sent: Sunday, August 7, 2016 2:02 PM<br> Subject: [Heath] Weak S-Meter on HR-20 Rcvr<br> <br>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.<br><br> <br>-------------- next part --------------<br>An HTML attachment was scrubbed...<br>URL: <<a href="https://puck.nether.net/pipermail/heath/attachments/20160808/e740447d/attachment-0001.html" target="_blank">https://puck.nether.net/pipermail/heath/attachments/20160808/e740447d/attachment-0001.html</a>><br><br>------------------------------<br><br>Subject: Digest Footer<br><br>_______________________________________________<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>------------------------------<br><br>End of Heath Digest, Vol 68, Issue 5<br>************************************<br><br><br></div> </div> </div> </div></div></body></html>