Icom IC-736

Headphones AF filter

Having done the modification described here I still felt a need to reduce level and higher tones separately for headphones.
I inserted a low pass filter into the path to headphones. A small PCB with the filter was created and this filter was soldered onto JACK UNIT.

A tiny PCB carries the filter:
The filter consists of two foil condensers 4.7 uF / 50V and an inductor 1.2 mH:
Rezistors R1 and R2 were removed from the JACK UNIT board:
The new board was coldered onto the JACK UNIT:


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