Saturday, August 26, 2017

Speech Processor and Antenna Tuner/SWR meter for BITX



Check out the blog of homebrew wizard K.P.S. Kang.   OM has a nice speech processor based on the LM386.   He also has a very simple antenna tuner and SWR bridge.  FB OM.  

http://smallwonderqrp.blogspot.com/2017/08/two-essential-add-ons-for-bitx-and.html

3 comments:

  1. I believe he uses a LM358 opamp. A LM386 would be very noisy in a speech processor.

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  2. Will it be possible to share the PCB layout to scale if it has been prepared. Thanks I advance. VU3RHU, QTH - Mumbai

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  3. Yes please share the pcb gerbers I wish to build this

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