Mark Zenier wrote:

In article Q0Pqd.799$8v3.447@trndny08,
Larry Ozarow wrote:
Howard Bingham wrote:

One question, what are "paper capacitors" & how do they differ from
those found on other radios..? (One of the contacts who aparently
services these old German radios suggested replacing the paper
capacitors before replacing tubes.).

Howard Bingham, Houston, Tx.
KE5APJ

Most radios have three basic kinds of caps -
electrolytics, which have large capacitance
values and show up in the power supply and the
audio output, tubulars, which have middling values
and show up all over the place, and small-capacitance
ceramics. Ceramics are usually small plastic disks or lozenge
shaped, and rarely fail.

Older radios will have mica capacitors in place of ceramics, which
became popular in, judging from the stuff I've scrapped over the
years, in the 1950s. They look like little black or dark brown dominos.

Those micas are surprisely reliable for their age. I seldom have to
replace one but it's a good idea to check them.


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