Hello Mike,
Quote:
Originally Posted by Mikey405
The main point I was trying to make was that it was a mechanical device whereas Test Card J was all-electronic.
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Whilst that is true, one shouldn't make untrue statements (which, I'm sure, was not your intention) as they are likely to be taken as fact and repeated elsewhere, propagating the untruth until it is difficult to rebut!
I hope you found the links I gave of some interest.
Regards,
Dave, G8TVW.