[ARC5] How Edwin Armstrong invented the superhet

[1oldlens1]

You are all leaving out TRF sets.  The simplest of all.  Of course they don't work for CW .  I didn't read the forwarded message about RDF carefully enough but from skimming it I think whoever wrote it is confusing or confounding some different things.  Precision signal strength measurement is not necessary.   The description of how a regenerative receiver works is plain wrong. Way back the Kolster RDF was common on ships as well as an RCA set. The antenna is really the important part. Sent from my Galaxy
-------- Original message --------From: Tom Lee <tomlee at ee.stanford.edu> Date: 1/7/23  2:23 PM  (GMT-08:00) To: arc5 at mailman.qth.net Subject: Re: [ARC5] How Edwin Armstrong invented the superhet 
    I agree with Hue. The superhet is certainly easier to operate (once
    aligned), but I don't know how one could call it easier to build
    than, say, a regen. Morgan's The Boys' First Book of Radio famously
    has a regen project, not a superhet, for good reasons.
    
    -- Cheers
    Tom
    
    
    -- 
Prof. Thomas H. Lee
Allen Ctr., Rm. 205
420 Via Palou Mall
Stanford University
Stanford, CA 94305-4070
http://www-smirc.stanford.edu
    On 1/7/2023 13:55, Hubert Miller wrote:
    
    
      
      I saw a comment that the superhet was easier to build. Wrong.
        That's why so many manufacturers in the late 1920s to late 1930s
        aiming for the "more affordable" market offered TRF and
        regenerative radios. That "Clipper" radio offered in the today
        auction that was mentioned here, is a mid 1930s glorified regen 
        built big with lots of knobs, but at a fraction of the price of
        a National or Hammarlund superhet. No tracking, virtually no
        alignment, minimal engineering and construction expense.
      Hue Miller
      
      
      
      
      
      
      
        Sent from my
          Verizon, Samsung Galaxy smartphone
      
      
      
      ______________________________________________________________
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