I am the new owner of a DX-100B. I have no history on the radio, so I am
carefully trying to examine it by comparison with the manual before applying
any power. So far so good, no major items missing, but a couple items stand
out.

First, someone has applied red tape under the entire outline of the
modulation transformer (part 51-22). It does not appear to be a good enough
job to electrically isolate the transformer from the chassis. Could this be
to mechanically isolate the transformer from the chassis and limit
audio-induced vibration?

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 ?

Thanks,

Bruce
WB8VCM