On Fri, 7 Mar 2014, William Sommerwerck wrote:

One way to determine whether the 'scope uses magnetic or electrostatic
deflection is to look at the specs. They'll probably indicate the deflection
type.

If not, look at the bandwidth. It's unlikely a magnetically deflected 'scope
would have a bandwidth much greater than 100kHz.

You mean like those plans in the back of the magazine to convert a tv set
to an oscilliscope?

Yes, that's definitely going to put a limit on bandwidth.

The concept did work if you wanted some large screens to display lisajous
patterns or something more deliberate in the way of visual organs, but
fairly useless as test equipment.

Or, there was that project in Ham Radio circa 1973 or so, where someone
turned a tv set into an oscilliscope, and then used it to show various ham
bands visually. In essence a pandaptor that displayed five bands at the
same time.

Michael