What are you expecting to see? You can look at received audio by putting a probe across
the speaker leads. If you want to look at your transmitted signal, you have to have a
demodulator somewhere. If you want your o scope to become a station monitor just by
hooking a probe somewhere you are out of luck.
So describe what you would like to see and someone can probably give a few hints.
Don't expect much out of the old Heath scope.
Best bet is to read up on stations monitors and other ancilliary equipment before starting to
use old gear and expecting wonders.
wanted to see my signal output from the radio, or the audio signal from my pc...
bought this thing for $99 a few years back as a curiosity ,at a antique shop in Camden SC and because it was a heathkit