"Dick, AA5VU" wrote:

I am probably showing my age but as a kid I recall the console radios
with a very cool tuning indicator called a Cat's Eye.

Some things are gone forever and are missed. Too bad there is not a
software version of the old cat's eye.

It was a 6E5 vacuum tube. Great indicators and they were driven
by the AGC voltage.
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Irv Finkleman,
Grampa/Ex-Navy/Old Fart/Ham Radio VE6BP
Calgary, Alberta, Canada