I helped design these back in '73 for consumer Pong. The FCC required 60dB isolation at ch 4/3 frequencies. Not easy to do for cheap. https://t.co/xntgiZG8JS
— Allan Alcorn (@alalcorn) January 3, 2017
from Twitter https://twitter.com/alalcorn
January 03, 2017 at 08:32PM
via IFTTT
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