Wednesday, November 15, 2023

Whole Earth Catalog Part II: More on SWL (and a Hippy One-Tube Receiver)

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Lee McKusick was correct about many things, but of course we were a bit disappointed by his focus on store bought gear.  But the 1971 Whole Earth catalog made up for this by publishing the schematic for a very simple single-triode receiver: 

Click on image for a better view

There is a follow-up article on grid leak detectors here: 
https://soldersmoke.blogspot.com/2023/11/the-grid-leak-detector-follow-up-from.html

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5 comments:

  1. AnonymousNovember 15, 2023 at 1:56 PM

    Regen?

    ReplyDelete
  2. Bill MearaNovember 15, 2023 at 2:50 PM

    Right you are. It is so simple that I had assumed it to be a regenerative receiver, but on second look, it appears that it is not regenerative. I will change the title and the text. Thanks and 73 Bill

    ReplyDelete
  3. WN2ANovember 15, 2023 at 6:00 PM

    Per the Philco TechRep Training manual 1953, it's the "Grid-Leak Detector(Fig 5.1c)". The text says "The grid-leak detector was formerly employed extensively in regenerative detectors, but now is used only in special applications". I guess with a little feedback, why not?
    That manual was the "Art of Electronics" of its day. My uncle John used it overseas, in the Air Force.

    ReplyDelete
  4. Sean O'ConnorDecember 7, 2023 at 8:58 PM

    If it had a tickler coil! If you poke around on this web-site I have some regen circuits and ideas.

    ReplyDelete
  5. Sean O'ConnorDecember 7, 2023 at 8:58 PM

    Well here:
    https://sites.google.com/view/analogelectronics/home

    ReplyDelete