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<DIV>Hi Sandy</DIV>
<DIV> </DIV>
<DIV>I would check all of the resistors with a test meter and the unit cold.
Replace all that are out of tolerance. Also make sure that the contacts on the
rotary switches, relays and connectors are free of any
oxidation.</DIV>
<DIV> </DIV>
<DIV>Do you have access to a calibrated signal generator? That would help to
determine the overall sensitivity and the individual gain of each stage in the
receive path.</DIV>
<DIV> </DIV>
<DIV><FONT lang=0 size=2 face=Arial FAMILY="SANSSERIF"
PTSIZE="10">73<BR></FONT><FONT lang=0 color=#0000ff size=4 face=Arial
FAMILY="SANSSERIF" PTSIZE="14"><I><BR>Bob</FONT><FONT lang=0 color=#000000
size=2 face=Arial FAMILY="SANSSERIF" PTSIZE="10"></I><BR>Bob F Burns G3OOU,
G-QRP 6907, @BobFBurns<BR>Crystal Palace Radio & Electronics Club: <A
href="http://www.g3oou.co.uk/">www.g3oou.co.uk</A><BR>Technical web site: <A
href="http://www.qsl.net/g3oou">www.qsl.net/g3oou
<DIV> </DIV>
<DIV>
<DIV>In a message dated 08/08/2016 18:17:41 GMT Standard Time, ac1wye@gmail.com
writes:</DIV>
<BLOCKQUOTE
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: blue 2px solid"><FONT
style="BACKGROUND-COLOR: transparent" color=#000000 size=2 face=Arial>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><BR></DIV>
<DIV>Thanks and 73, Sandy AC1Y</DIV><BR><BR>-- <BR>Sent from
Sandy'sGmail
Mobile<BR><BR><BR>_______________________________________________<BR>Heath
mailing
list<BR>Heath@puck.nether.net<BR>https://puck.nether.net/mailman/listinfo/heath<BR></FONT></BLOCKQUOTE></DIV></A></FONT></DIV></FONT></BODY></HTML>