On Tue, 19 Aug 2008 20:34:20 -0400, "Eisboch"
wrote:


wrote in message
.. .


Ah yes, the magic blue-green "eye".


Anyone remember the old, MacIntosh FM receivers that had a little miniature
CRT? It was used to accurately tune the receiver by creating a circular
Lissajous pattern.

Mid '50's technology, I think.

Eisboch



Same idea, except the VU version was just a "gas gauge". I've had old
tuners that had two bars that came together for tuning precision.