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Re: VE3EFJ third mixer mod for the R4C


 

Yeah, that works. The TDA chips are rock stable and practically bulletproof when implemented properly. I have one of the Velleman TDA2002 modules that I acquired some years back for my R4C, I just have not got a round tuit yet. One thing that I did do was to alter the capacitance in the feedback network to roll the audio off around 4KHz.

On Wed, 01 Jan 2025 08:33:53 -0800
"Gary WB6OGD via groups.io" <winbladgary@...> wrote:

It's a waste of time and money to design an AF amp for the Drake.
I used a (now) 75cent complete TDA2030 module from china.

Like this one:
--

73

-Jim
NU0C

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