wrote in message
ups.com...
Thanks for the responses.

Seems like the older sets were far more forgiving when it comes to
disconnecting the yoke.

I have already tried using the vertical of the 9" mono monitor, which
produced a result, but as JW posted, you need a fair bit of volume to
do it.

I haven't yet tried the horizontal. Will look at the option of an
inductor and series load. and also look out for the magazine circuits
NSM suggested for the colour.-

will post with results at a later stage!

I recall the Radio Shack Color Computer had an optional ROMPak which did
various displays like those in Media Player software when you hooked it up
to your stereo. They even claimed you could tune your room with it - a bit
dubious I think.
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N