[BC] Article in RW Workbench--Question?

[Jeff Carter]

Where were you 25 years ago when I was repairing consumer gear for a Curtis Mathes franchise?  That is a cool solution and would have worked well with the minimal equipment I had at hand at the time.

Jeff/KD4RBG

On Tue, Feb 16, 2010 at 3:34 PM, Jim Tonne <tonne at comcast.net> wrote:

>The way I did this in those good old days was to
>record the line voltage (60 cycles) on a known
>good macine.

>> Recorded on a "correct speed" reference recorder.

>For playback, you don't even  need an audio
>oscillator for comparison.  Just inject "hum" into
>one channel of the scope with your finger and
>use that as the standard.