Radio System Blog

Schematic of Step Attenuator

Details: Category: Radio System; Published: Sunday, 14 April 2019 21:46; Hits: 8401

Searched online to find some schematics of step attenuators and then edited schematic into QUCS.

Simulator result

The +20 db step is off quite a bit.

Details: Category: Radio System; Published: Sunday, 14 April 2019 20:44; Hits: 8433

I referenced this video to modify a Baofeng cable to make a programming cable for a Yaesu FT-4X.

Open case at USB end of the cable gently with small screwdriver. Pry at the cable stress relief end.
Watch this video (Yaesu FT-4X Programming Cable) and dig out the needed diode from your parts stock.

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