"WB8VCM" ) writes:

Second, under the chassis near the modulation transformer, my rig has a big
cylindrical component resembling a modern electrolytic. It's about 1 3/4"
in length by 1" diameter. It has a "C-D" logo on it, with a part number
CP28AIEH203K. From the schematic, it should be an 0.02 uf @ 1600V across
the transformer secondary, but the size of the component is huge, at least
compared to a modern component with these ratings. There is also an 0.001
uf at 3 KV disc ceramic tacked on in parallel with the big capacitor. Is
anyone familiar with this big capacitor ?

"C-D" could certainly be well-known capacitor manufacturer Cornell-Dubilier


It's a high voltage capacitor, with relatively high (for the voltage
rating) capacitance. It's likely oil-filled. It's fifty years old,
and they've learned a lot since then about making capacitors. (I
have a 10,000uF 16V capacitor I got about 1973 at a hamfest, and it
was big time then. It's also the size of a Coke can. The same
value electrolytic is now far smaller, and it's easy to get them
with a higher voltage rating.)

Michael VE2BVW