[Hallicrafters] Capacitor identification. - go 630V or higher

[Rodney Bunt]

Waldo,

Use 630V Capacitors and replace everyone of them,that is not a Mica or a Ceramic capacitor.

Warning, the Micas and the Ceramics can be bad too, took me a lot of time to locate a leaky
ceramic cap in a SX-111, causing a loud annoying crackle on strong signals, should have replaced
them all in the first place.

I work through the Radio with the Circuit diagram in front of me and use a highlighter pen on the
circuit to mark off what I have replaced. This is good for finding "modifications" that should be
reversed. These rigs were very well designed in the first place....

Rodney
VK2KTZ


--- Waldo Magnuson <magnuson at mac.com> wrote:

> I've been UNable to find the voltage color code for color bands 4 and 5 
> for the "Black Beauty" capacitors.  In the SX-100 I am looking at there 
> appear to be 3 sizes of black beauties - all have 5 color bands.  The 
> first three bands give the capacitance value, the forth band is black 
> (I think - it's faded), then there is a space followed by a fifth band 
> which is either blue or red in the capacitors I see.  There are three 
> sides:  0.305 in. Dia. x 1 in. Len., 0.443 in. Dia. x 1 3/16 in. Len., 
> and 0.615 in. Dia. x 1 3/4 in. Len.
> My questions are:  Does the color code specify the voltage rating, or 
> does the size specify the voltage rating, or is it a combination?
> 
> Sort of a related question is that I also see "Black Cat" (black body) 
> and "Tiny Chief" (red body) both with values stamped on them.  The 
> Black Cat and Tiny Chief are molded capacitors and look pretty much 
> like the Black Beauties.  Are all three of these capacitor types to be 
> considered the same - namely REPLACE?
> 
> Thanks,
> 73,  Skip Magnuson  W7WGM
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