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So then what was the root-cause of your SB-220's fireworks display? =20
-Paul, W9AC
----- Original Message -----=20
From: Colin Lamb=20
To: Amps reflector=20
Sent: Friday, September 08, 2000 12:39 PM
Subject: [AMPS] Logic v. Magic
If an amplifier runs without problems for a period of years it would =
seem logical to believe the original design is satisfactory, and also =
logical to believe that future problems are related to deterioration of =
components. =20
This is a generalization for which there are exceptions. But, it =
should be safe to say that in most cases this statement would be more =
probably correct than not. =20
Upon acceptance of this statement, it seems illogical to redesign =
numerous amplifiers based upon their failure decades after they were put =
in service.=20
=20
As an amateur scientist, I would rather work through and understand a =
specific problem than apply a generic parasitic suppressor kit that =
cures all problems. =20
Because suppressors are designed to suppress something we cannot see =
or hear, they are given magical qualities. And, if they have special =
qualities that guarantee they will work under all conditions and for all =
amplifiers, they have even more magical qualities. Such a suppressor =
will be the magical shield that protects from all sorts of adversaries. =
It will improve the amplifier so that it is better than original. =20
A number of years ago, I had a Heath SB-220 that exhibited fireworks. =
I installed nichrome parasitic suppressors and installed the other =
things recommended by Rich's original Ham Radio articles. It still had =
fireworks. His magic did not give me the magical shield I wanted. =20
=20
I concluded that the magical shield did not work because I was not a =
believer. Simply stated, I was not worthy to have it work. =20
Once I realized I had no magical protection, I went back to work to =
fix the original problem, and I must admit the science of working =
through a problem and making measurements, coming up with probable =
causes and cures and recording results was a very satisfying part of ham =
radio. =20
For me, installing a generic parasitic suppressor into an amplifier =
that has worked reliably for a period of years is an admission of =
defeat. It is an admission that I am not scientific enough to deserve =
the Extra Class ticket that I hold. =20
73, Colin K7FM
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<HTML><HEAD>
<META content=3D"text/html; charset=3Diso-8859-1" =
http-equiv=3DContent-Type>
<META content=3D"MSHTML 5.00.2919.6307" name=3DGENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY bgColor=3D#ffffff>
<DIV><FONT face=3DArial size=3D2>
<DIV><FONT face=3DArial size=3D2>So then what was the root-cause of your =
SB-220's=20
fireworks display? </FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=3DArial size=3D2>-Paul, W9AC</FONT></DIV></FONT></DIV>
<BLOCKQUOTE=20
style=3D"BORDER-LEFT: #000000 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: =
0px; PADDING-LEFT: 5px; PADDING-RIGHT: 0px">
<DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV=20
style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>=20
<A href=3D"mailto:k7fm@teleport.com"; title=3Dk7fm@teleport.com>Colin =
Lamb</A>=20
</DIV>
<DIV style=3D"FONT: 10pt arial"><B>To:</B> <A =
href=3D"mailto:amps@contesting.com"=20
title=3Damps@contesting.com>Amps reflector</A> </DIV>
<DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Friday, September 08, =
2000 12:39=20
PM</DIV>
<DIV style=3D"FONT: 10pt arial"><B>Subject:</B> [AMPS] Logic v. =
Magic</DIV>
<DIV><BR></DIV>
<DIV><FONT face=3DArial size=3D2>If an amplifier runs without problems =
for a=20
period of years it would seem logical to believe the original =
design is=20
satisfactory, and also logical to believe that future problems are =
related to=20
deterioration of components. </FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=3DArial size=3D2>This is a generalization for which =
there=20
are exceptions. But, it should be safe to say that in most =
cases=20
this statement would be more probably correct than not. =
</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=3DArial size=3D2>Upon acceptance of this statement, it =
seems=20
illogical to redesign numerous amplifiers based upon their =
failure=20
decades after they were put in service. </FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>As an amateur scientist, I would =
rather work=20
through and understand a specific problem than apply a generic =
parasitic=20
suppressor kit that cures all problems. </FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=3DArial size=3D2>Because suppressors are designed to =
suppress=20
something we cannot see or hear, they are given magical =
qualities. =20
And, if they have special qualities that guarantee they will =
work=20
under all conditions and for all amplifiers, they have even more =
magical=20
qualities. Such a suppressor will be the magical shield =
that=20
protects from all sorts of adversaries. It will improve the =
amplifier so=20
that it is better than original. </FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=3DArial size=3D2>A number of years ago, I had a Heath =
SB-220 that=20
exhibited fireworks. I installed nichrome parasitic suppressors =
and=20
installed the other things recommended by Rich's original Ham Radio=20
articles. It still had fireworks. His magic did not give =
me the=20
magical shield I wanted. </FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>I concluded that the magical shield =
did not work=20
because I was not a believer. Simply stated, I was not =
worthy to=20
have it work. </FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=3DArial size=3D2>Once I realized I had no magical =
protection, I=20
went back to work to fix the original problem, and I must admit the =
science of=20
working through a problem and making measurements, coming up with =
probable causes and cures</FONT> and recording results was a =
very=20
satisfying part of ham radio. </DIV>
<DIV> </DIV>
<DIV>For me, installing a generic parasitic suppressor into an =
amplifier that=20
has worked reliably for a period of years is an admission of =
defeat. It=20
is an admission that I am not scientific enough to deserve the Extra =
Class=20
ticket that I hold. </DIV>
<DIV> </DIV>
<DIV>73, Colin K7FM</DIV>
<DIV> </DIV></BLOCKQUOTE></BODY></HTML>
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