[Heathkit] SB-104 Question

[rbethman]

Would you care to share the location?

Bob - N0DGN

On 1/30/2011 1:28 PM, Donald Spoon wrote:
> A couple of weeks ago, I asked a question here regarding some
> differences between my SB-104 and the SB-104A manual that I have re:
> plugging in a new "E" board with a CW filter installed.  Thanks to all
> who replied.  Your comments were quite helpful.
>
> Apparently the switch lettering differences that I noticed was a
> production change, and there was a rather large upgrade kit produced to
> "upgrade" the various models to the SB-104A.  I have discovered the
> manual for this upgrade is freely available in PDF format on the web,
> and shows all the parts and wiring changes!  It is under the name of
> "SBM-104-2".  With the assistance of this manual, you can determine how
> many of the changes have been made to your unit, which was the
> fundamental problem I had.    There is a specific section on wiring
> changes for the "E" board with the CW filter installed, including some
> chassis wiring changes on the switches.  I can now simply compare my
> unit to the modifications and see what I have to change!
>
> I hope this info will be of use to others...
>
> Cheers,
> -Don Spoon-
> K0APK
>
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