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<DIV>Hi Joe</DIV>
<DIV> </DIV>
<DIV>Apart from the possibility that the final tubes have a problem does
anything else change, for example the negative bias voltage or screen/anode
supplies? Are the finals stable and correctly neutralised?</DIV>
<DIV> </DIV>
<DIV>Any resistors/pots around the finals that are misbehaving or out of
tolerance?</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 23/02/2016 03:36:14 GMT Standard Time,
heath@puck.nether.net writes:</DIV>
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style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: blue 2px solid"><FONT
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<DIV id=yui_3_16_0_1_1456192607019_2340 dir=ltr>Hello fellow Hams, Name is
Joe, call WA3CKA, builder of my SB-102 in 1972, updated 3 years ago in use
everyday.</DIV>
<DIV id=yui_3_16_0_1_1456192607019_2458 dir=ltr><BR></DIV>
<DIV id=yui_3_16_0_1_1456192607019_2396 dir=ltr>I find that the idling plate
current rises above the 50 ma setting as I transmit in a normal length CW QSO
maybe 5 minutes. <BR></DIV>
<DIV id=yui_3_16_0_1_1456192607019_2457 dir=ltr><BR></DIV>
<DIV id=yui_3_16_0_1_1456192607019_2438 dir=ltr>Final tubes were new old stock
now 3 years old. Any suggestions as what may be causing this
condition.</DIV>
<DIV id=yui_3_16_0_1_1456192607019_2456 dir=ltr><BR></DIV>
<DIV id=yui_3_16_0_1_1456192607019_2455 dir=ltr>You can speak to me in
technical terms if you want as I am a retired electronics tech. So far I
find nothing wrong.</DIV>
<DIV id=yui_3_16_0_1_1456192607019_2502 dir=ltr><BR></DIV>
<DIV id=yui_3_16_0_1_1456192607019_2530 dir=ltr>I only do CW. 73 to
all.</DIV>
<DIV id=yui_3_16_0_1_1456192607019_2531 dir=ltr><BR></DIV>
<DIV id=yui_3_16_0_1_1456192607019_2532 dir=ltr>Joe WA3CKA<BR></DIV>
<DIV id=yui_3_16_0_1_1456192607019_2454 dir=ltr><BR></DIV>
<DIV id=yui_3_16_0_1_1456192607019_2453
dir=ltr><BR></DIV></DIV><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>