Tuesday, November 28, 2017

Videos of iPhone Box DC Receiver






These are just a couple of short videos that I made for my nephew before sending him this receiver. 

 As you can hear, deafness is not a problem with this design!   I did make some frequency stability improvements after this video was made -- I think you can hear a bit of drift.  Still, not bad for a very simple circuit using a polyvaricon superglued to the back of a cardboard box.  

I'll post more videos of the second version of this receiver.  There are further improvements in frequency stability.  My goal:  "Juliano Si5351" levels of stable-ness.  
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3 comments:

  1. JohnNovember 28, 2017 at 10:31 PM

    Gold stuff Bill. Thanks for sharing the details.

    This will be my first scratch build. I have studying the schematic and hope to noodle the layout this weekend.

    My first component order should be here soon. I am excited and scared. But you can't learn to be good without making an effort and stumbling as ya go.

    73 from the Mitten State

    KE5ETX

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  2. Rob G7WKENovember 29, 2017 at 12:57 PM

    Sounds fantastic, Bill. Looks like another project for my 'to do' list!

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  3. TheGazlabApril 1, 2018 at 8:35 PM

    Hi Bill, I've been through my components draw and I think i have enough bits :-) your schematic has a few bits I can't fathom .. volume and the electrolytics :-) do you have one with these labeled?? many thanks, an excited Gaz :-))

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