The promised follow-up video for my ZOPAN PFL-22 frequency counter after thorough restoration. All cleaned up and nice inside, but does it solve any of its measurement problems I noticed in the earlier video ( https://www.youtube.com/watch?v=e-pvGzIBrUU )?

0:00 Intro 0:01 Let's See What Changed 3:20 Squeaky Clean! 5:44 Input Amplifier 8:38 Block Diagram Explained 13:13 Logic Schematics 20:55 The Counter Circuits 24:25 The Input Amplifier 35:30 Getting Confused 40:33 What's It Good For? My Test Setup 43:45 Afterword

It's hard to analyze logic while talking on the camera, haha. I may be too analog for that.

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