radio indicator of ta7642 radio

I had exchanged the like these.


YouTube: radio indicator of ta7642 radio

YouTube: radio indicator 2: full scale1mA

This is a s meter unit  "RK-109". It can drive 500uA (full scale )mater, hard to 1mA meter

maybe ,s meter unit RK-109 is doing well for straight radio of TA7642.

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