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<DIV>Obviously, the first thing to do is check the diode so see if it's bad. A
1N34 or NTE109 should work fine as a replacement.</DIV>
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<DIV>Pete, wa2cwa</DIV>
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<DIV>On Tue, 21 Jan 2014 22:15:15 -0500 "Alexander N. Gerli" <<A
href="mailto:ac1wye@gmail.com">ac1wye@gmail.com</A>> writes:</DIV>
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<DIV class=gmail_default style="FONT-SIZE: large; COLOR: rgb(0,0,255)">Hi,
everyone,<BR><BR></DIV>
<DIV class=gmail_default style="FONT-SIZE: large; COLOR: rgb(0,0,255)">My
HL-2200 is running fine except for one small thing: the Relative Power
positions on the Meter switch don't read.<BR><BR></DIV>
<DIV class=gmail_default style="FONT-SIZE: large; COLOR: rgb(0,0,255)">I've
checked the parts in the chain, and I'll bet the 1N191 Germanium diode is
shot. All the other parts in the resistive divider chain check out, both at
the output SO-239 terminal strip and also on the terminal strip below the
multimeter.<BR></DIV>
<DIV class=gmail_default style="FONT-SIZE: large; COLOR: rgb(0,0,255)">Gotta
be that diode.<BR><BR></DIV>
<DIV class=gmail_default style="FONT-SIZE: large; COLOR: rgb(0,0,255)">Problem
is...1N191s aren't available any more, and they're Germanium which makes them
a bit fragile for reverse voltage peaks. The '191 has a PRV of 90V which seems
awfully low, even given the 68K ohm 2W sampling resistor ahead of it going to
the SO-239.<BR><BR></DIV>
<DIV class=gmail_default style="FONT-SIZE: large; COLOR: rgb(0,0,255)">What to
do? Does anyone on the List have any suggestions for a good substitute which
is readily available? I have some 1N270s, but they're Silicon and perhaps not
as sensitive as those Germaniums. Seems to me that I should use a diode with a
PRV of more than just 90V!<BR> <BR clear=all></DIV>
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<DIV><SPAN style="FONT-FAMILY: arial,helvetica,sans-serif"><FONT size=4><SPAN
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<DIV class=gmail_default
style="FONT-SIZE: large; COLOR: rgb(0,0,255); DISPLAY: inline">Thanks for your
help, as always!</DIV><BR><BR></SPAN></FONT></SPAN></DIV><SPAN
style="FONT-FAMILY: arial,helvetica,sans-serif"><FONT size=4><SPAN
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<DIV class=gmail_default
style="FONT-SIZE: large; COLOR: rgb(0,0,255); DISPLAY: inline">73, Sandy
AC1Y</DIV><BR><BR>Alexander N. Gerli, Sr.<BR></SPAN></FONT></SPAN></DIV><SPAN
style="FONT-FAMILY: arial,helvetica,sans-serif"><FONT size=4><SPAN
style="COLOR: rgb(0,0,255)">548 Allred Mill
Road<BR></SPAN></FONT></SPAN></DIV><SPAN
style="FONT-FAMILY: arial,helvetica,sans-serif"><FONT size=4><SPAN
style="COLOR: rgb(0,0,255)">Mount Airy, NC
27030-2202<BR><BR></SPAN></FONT></SPAN></DIV><SPAN
style="FONT-FAMILY: arial,helvetica,sans-serif"><FONT size=4><SPAN
style="COLOR: rgb(0,0,255)">Scotsmen walk about 900 miles each
year.<BR></SPAN></FONT></SPAN></DIV><SPAN
style="FONT-FAMILY: arial,helvetica,sans-serif"><FONT size=4><SPAN
style="COLOR: rgb(0,0,255)">A Scotsman drinks around 45 gallons of Whisky a
year.<BR></SPAN></FONT></SPAN></DIV><FONT size=4><FONT size=4><FONT
size=4><FONT size=4><FONT size=4><FONT size=4><FONT size=4><FONT size=4><FONT
size=4><FONT size=4><FONT size=4><FONT size=4><SPAN
style="FONT-FAMILY: arial,helvetica,sans-serif"><SPAN
style="COLOR: rgb(0,0,255)">Scotsmen get about 20 Miles Per
Gallon.</SPAN></SPAN><BR></FONT></FONT></FONT></FONT></FONT></FONT></FONT></FONT></FONT></FONT></FONT></FONT></DIV></DIV></DIV>
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