[Boatanchors] NC-188 re-cap query

[Ian Webb]

Those are mica capacitors.  I don't have an easy to send chart handy but recall
that the Heathkit manuals always had a nice chart for the myriad of different
flavors of those caps.  Look also in any of the ARRL handbooks.

It's much, much, much less likely that the micas and disc caps will have a
problem.  I'd concentrate on the others first go around anyway unless you have to
do serious disassembly to get to some areas of the unit.  Do all the electrolytics
as well.  Particularly in the power supply and add a line fuse under chassis with
a holder out of sight if you don't have one already.  It's not fun to lose a hard
to replace power transformer or choke after going to all that trouble.

I have recapped two different NC-125s, older receivers but the same general era,
and in neither of them did I need to replace any mica or disc capacitors.

I'd replace micas with micas and discs with discs personally.

I'm sure somebody will have a URL they can refer you to or something easy to send
you.  Have you done a Google search?

Ian, K6SDE


Will wrote:

> I am recapping my newly acquired NC-188, as hopefully the remedy to getting
> nothing but very loud buzz out of it at the moment.
>
> There are several caps that resemble dominoes, little red-brown dominoes with
> six variously color spots on them, and I don't know how to read their color
> code, or what type of cap they are, and thus if I need to replace them only
> with a modern equivalent(?) Please tell me if you can how to read and treat
> these.
>
> Also, this being the first time I have completely recapped a receiver, should
> I replace all the disc ceramics with film/Orange Drop type caps, or just plain
> discs?
>
> Thanks.
>
> Will, KD7BFX
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